./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-simpl-str-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f3c656-c55f-4846-a895-f172a4c3dda3/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f3c656-c55f-4846-a895-f172a4c3dda3/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f3c656-c55f-4846-a895-f172a4c3dda3/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f3c656-c55f-4846-a895-f172a4c3dda3/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-simpl-str-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f3c656-c55f-4846-a895-f172a4c3dda3/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f3c656-c55f-4846-a895-f172a4c3dda3/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0b48bde914fb7ebeda4cbd6fd329f7fd1281e3c3e233b6f5149c7b66a2f709ab --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 12:33:55,784 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:33:55,787 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:33:55,825 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:33:55,825 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:33:55,826 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:33:55,828 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:33:55,834 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:33:55,836 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:33:55,842 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:33:55,843 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:33:55,845 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:33:55,845 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:33:55,848 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:33:55,852 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:33:55,853 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:33:55,855 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:33:55,856 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:33:55,858 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:33:55,866 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:33:55,867 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:33:55,871 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:33:55,873 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:33:55,874 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:33:55,882 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:33:55,883 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:33:55,883 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:33:55,884 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:33:55,884 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:33:55,885 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:33:55,885 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:33:55,886 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:33:55,887 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:33:55,887 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:33:55,888 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:33:55,889 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:33:55,889 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:33:55,890 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:33:55,890 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:33:55,891 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:33:55,891 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:33:55,897 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f3c656-c55f-4846-a895-f172a4c3dda3/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 12:33:55,935 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:33:55,935 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:33:55,936 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:33:55,936 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:33:55,937 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:33:55,937 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:33:55,938 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:33:55,938 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:33:55,938 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:33:55,939 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:33:55,940 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:33:55,940 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 12:33:55,940 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:33:55,940 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:33:55,941 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:33:55,941 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:33:55,941 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:33:55,941 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:33:55,941 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 12:33:55,942 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:33:55,942 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:33:55,942 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:33:55,942 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:33:55,943 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:33:55,943 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:33:55,943 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:33:55,943 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:33:55,944 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:33:55,944 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:33:55,945 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:33:55,945 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:33:55,945 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:33:55,945 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:33:55,946 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:33:55,946 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:33:55,947 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_80f3c656-c55f-4846-a895-f172a4c3dda3/bin/uautomizer-ug76WZFUDN/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f3c656-c55f-4846-a895-f172a4c3dda3/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0b48bde914fb7ebeda4cbd6fd329f7fd1281e3c3e233b6f5149c7b66a2f709ab [2022-11-20 12:33:56,262 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:33:56,302 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:33:56,305 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:33:56,306 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:33:56,307 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:33:56,308 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f3c656-c55f-4846-a895-f172a4c3dda3/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/chl-simpl-str-trans.wvr.c [2022-11-20 12:33:59,299 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:33:59,538 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:33:59,539 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f3c656-c55f-4846-a895-f172a4c3dda3/sv-benchmarks/c/weaver/chl-simpl-str-trans.wvr.c [2022-11-20 12:33:59,546 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f3c656-c55f-4846-a895-f172a4c3dda3/bin/uautomizer-ug76WZFUDN/data/daa750828/5446f1c790ef420fbf12e5e66cfd83bb/FLAG76fc8d022 [2022-11-20 12:33:59,567 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f3c656-c55f-4846-a895-f172a4c3dda3/bin/uautomizer-ug76WZFUDN/data/daa750828/5446f1c790ef420fbf12e5e66cfd83bb [2022-11-20 12:33:59,569 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:33:59,571 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:33:59,575 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:33:59,575 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:33:59,579 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:33:59,579 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:33:59" (1/1) ... [2022-11-20 12:33:59,581 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1090bac2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:33:59, skipping insertion in model container [2022-11-20 12:33:59,581 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:33:59" (1/1) ... [2022-11-20 12:33:59,589 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:33:59,612 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:33:59,847 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f3c656-c55f-4846-a895-f172a4c3dda3/sv-benchmarks/c/weaver/chl-simpl-str-trans.wvr.c[2514,2527] [2022-11-20 12:33:59,857 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:33:59,869 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:33:59,914 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f3c656-c55f-4846-a895-f172a4c3dda3/sv-benchmarks/c/weaver/chl-simpl-str-trans.wvr.c[2514,2527] [2022-11-20 12:33:59,919 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:33:59,934 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:33:59,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:33:59 WrapperNode [2022-11-20 12:33:59,935 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:33:59,936 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:33:59,937 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:33:59,937 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:33:59,944 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:33:59" (1/1) ... [2022-11-20 12:33:59,964 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:33:59" (1/1) ... [2022-11-20 12:34:00,006 INFO L138 Inliner]: procedures = 23, calls = 30, calls flagged for inlining = 8, calls inlined = 12, statements flattened = 205 [2022-11-20 12:34:00,006 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:34:00,007 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:34:00,007 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:34:00,007 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:34:00,017 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:33:59" (1/1) ... [2022-11-20 12:34:00,017 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:33:59" (1/1) ... [2022-11-20 12:34:00,029 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:33:59" (1/1) ... [2022-11-20 12:34:00,030 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:33:59" (1/1) ... [2022-11-20 12:34:00,034 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:33:59" (1/1) ... [2022-11-20 12:34:00,037 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:33:59" (1/1) ... [2022-11-20 12:34:00,038 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:33:59" (1/1) ... [2022-11-20 12:34:00,040 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:33:59" (1/1) ... [2022-11-20 12:34:00,042 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:34:00,043 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:34:00,043 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:34:00,044 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:34:00,044 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:33:59" (1/1) ... [2022-11-20 12:34:00,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:34:00,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f3c656-c55f-4846-a895-f172a4c3dda3/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:34:00,077 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f3c656-c55f-4846-a895-f172a4c3dda3/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:34:00,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f3c656-c55f-4846-a895-f172a4c3dda3/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:34:00,121 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:34:00,122 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 12:34:00,122 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 12:34:00,123 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 12:34:00,123 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 12:34:00,124 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-20 12:34:00,125 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-20 12:34:00,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 12:34:00,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 12:34:00,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 12:34:00,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:34:00,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:34:00,126 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 12:34:00,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:34:00,128 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 12:34:00,267 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:34:00,269 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:34:00,747 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:34:00,757 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:34:00,757 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 12:34:00,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:34:00 BoogieIcfgContainer [2022-11-20 12:34:00,759 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:34:00,775 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:34:00,775 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:34:00,779 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:34:00,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:33:59" (1/3) ... [2022-11-20 12:34:00,780 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34b12528 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:34:00, skipping insertion in model container [2022-11-20 12:34:00,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:33:59" (2/3) ... [2022-11-20 12:34:00,780 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34b12528 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:34:00, skipping insertion in model container [2022-11-20 12:34:00,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:34:00" (3/3) ... [2022-11-20 12:34:00,782 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-simpl-str-trans.wvr.c [2022-11-20 12:34:00,791 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 12:34:00,802 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:34:00,802 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2022-11-20 12:34:00,802 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 12:34:00,999 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-20 12:34:01,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 268 places, 277 transitions, 578 flow [2022-11-20 12:34:01,249 INFO L130 PetriNetUnfolder]: 19/274 cut-off events. [2022-11-20 12:34:01,249 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-20 12:34:01,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 287 conditions, 274 events. 19/274 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 727 event pairs, 0 based on Foata normal form. 0/237 useless extension candidates. Maximal degree in co-relation 205. Up to 2 conditions per place. [2022-11-20 12:34:01,265 INFO L82 GeneralOperation]: Start removeDead. Operand has 268 places, 277 transitions, 578 flow [2022-11-20 12:34:01,277 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 245 places, 253 transitions, 521 flow [2022-11-20 12:34:01,294 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:34:01,302 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;@401a5802, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:34:01,303 INFO L358 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2022-11-20 12:34:01,326 INFO L130 PetriNetUnfolder]: 2/89 cut-off events. [2022-11-20 12:34:01,326 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 12:34:01,327 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:34:01,328 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] [2022-11-20 12:34:01,328 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 12:34:01,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:34:01,333 INFO L85 PathProgramCache]: Analyzing trace with hash -2126661228, now seen corresponding path program 1 times [2022-11-20 12:34:01,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:34:01,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927498802] [2022-11-20 12:34:01,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:34:01,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:34:01,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:01,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:34:01,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:34:01,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927498802] [2022-11-20 12:34:01,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927498802] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:34:01,747 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:34:01,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:34:01,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846451306] [2022-11-20 12:34:01,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:34:01,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:34:01,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:34:01,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:34:01,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:34:01,790 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 277 [2022-11-20 12:34:01,796 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 253 transitions, 521 flow. Second operand has 6 states, 6 states have (on average 238.83333333333334) internal successors, (1433), 6 states have internal predecessors, (1433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:01,796 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:34:01,796 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 277 [2022-11-20 12:34:01,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:34:02,154 INFO L130 PetriNetUnfolder]: 113/666 cut-off events. [2022-11-20 12:34:02,154 INFO L131 PetriNetUnfolder]: For 79/79 co-relation queries the response was YES. [2022-11-20 12:34:02,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 990 conditions, 666 events. 113/666 cut-off events. For 79/79 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3809 event pairs, 2 based on Foata normal form. 112/686 useless extension candidates. Maximal degree in co-relation 841. Up to 165 conditions per place. [2022-11-20 12:34:02,176 INFO L137 encePairwiseOnDemand]: 265/277 looper letters, 33 selfloop transitions, 5 changer transitions 0/254 dead transitions. [2022-11-20 12:34:02,177 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 254 transitions, 617 flow [2022-11-20 12:34:02,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:34:02,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 12:34:02,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1475 transitions. [2022-11-20 12:34:02,201 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8874849578820698 [2022-11-20 12:34:02,202 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1475 transitions. [2022-11-20 12:34:02,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1475 transitions. [2022-11-20 12:34:02,207 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:34:02,210 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1475 transitions. [2022-11-20 12:34:02,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 245.83333333333334) internal successors, (1475), 6 states have internal predecessors, (1475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:02,228 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 277.0) internal successors, (1939), 7 states have internal predecessors, (1939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:02,230 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 277.0) internal successors, (1939), 7 states have internal predecessors, (1939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:02,232 INFO L175 Difference]: Start difference. First operand has 245 places, 253 transitions, 521 flow. Second operand 6 states and 1475 transitions. [2022-11-20 12:34:02,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 254 transitions, 617 flow [2022-11-20 12:34:02,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 254 transitions, 598 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 12:34:02,250 INFO L231 Difference]: Finished difference. Result has 244 places, 246 transitions, 508 flow [2022-11-20 12:34:02,252 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=498, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=508, PETRI_PLACES=244, PETRI_TRANSITIONS=246} [2022-11-20 12:34:02,258 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, -1 predicate places. [2022-11-20 12:34:02,258 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 246 transitions, 508 flow [2022-11-20 12:34:02,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 238.83333333333334) internal successors, (1433), 6 states have internal predecessors, (1433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:02,260 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:34:02,260 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] [2022-11-20 12:34:02,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 12:34:02,263 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 12:34:02,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:34:02,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1501987942, now seen corresponding path program 1 times [2022-11-20 12:34:02,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:34:02,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981475414] [2022-11-20 12:34:02,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:34:02,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:34:02,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:02,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:34:02,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:34:02,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981475414] [2022-11-20 12:34:02,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981475414] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:34:02,427 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:34:02,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:34:02,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468565346] [2022-11-20 12:34:02,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:34:02,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:34:02,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:34:02,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:34:02,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:34:02,432 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 277 [2022-11-20 12:34:02,433 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 246 transitions, 508 flow. Second operand has 4 states, 4 states have (on average 241.75) internal successors, (967), 4 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:02,433 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:34:02,434 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 277 [2022-11-20 12:34:02,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:34:02,690 INFO L130 PetriNetUnfolder]: 87/780 cut-off events. [2022-11-20 12:34:02,690 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2022-11-20 12:34:02,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1033 conditions, 780 events. 87/780 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 5092 event pairs, 24 based on Foata normal form. 0/663 useless extension candidates. Maximal degree in co-relation 668. Up to 71 conditions per place. [2022-11-20 12:34:02,706 INFO L137 encePairwiseOnDemand]: 271/277 looper letters, 37 selfloop transitions, 4 changer transitions 0/260 dead transitions. [2022-11-20 12:34:02,706 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 260 transitions, 626 flow [2022-11-20 12:34:02,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:34:02,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 12:34:02,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1003 transitions. [2022-11-20 12:34:02,710 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9052346570397112 [2022-11-20 12:34:02,710 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1003 transitions. [2022-11-20 12:34:02,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1003 transitions. [2022-11-20 12:34:02,711 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:34:02,711 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1003 transitions. [2022-11-20 12:34:02,713 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 250.75) internal successors, (1003), 4 states have internal predecessors, (1003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:02,716 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 277.0) internal successors, (1385), 5 states have internal predecessors, (1385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:02,717 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 277.0) internal successors, (1385), 5 states have internal predecessors, (1385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:02,717 INFO L175 Difference]: Start difference. First operand has 244 places, 246 transitions, 508 flow. Second operand 4 states and 1003 transitions. [2022-11-20 12:34:02,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 260 transitions, 626 flow [2022-11-20 12:34:02,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 260 transitions, 617 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 12:34:02,727 INFO L231 Difference]: Finished difference. Result has 245 places, 247 transitions, 523 flow [2022-11-20 12:34:02,728 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=497, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=523, PETRI_PLACES=245, PETRI_TRANSITIONS=247} [2022-11-20 12:34:02,729 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 0 predicate places. [2022-11-20 12:34:02,729 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 247 transitions, 523 flow [2022-11-20 12:34:02,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 241.75) internal successors, (967), 4 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:02,730 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:34:02,731 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] [2022-11-20 12:34:02,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 12:34:02,732 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 12:34:02,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:34:02,733 INFO L85 PathProgramCache]: Analyzing trace with hash -664990514, now seen corresponding path program 1 times [2022-11-20 12:34:02,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:34:02,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041783227] [2022-11-20 12:34:02,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:34:02,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:34:02,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:02,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:34:02,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:34:02,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041783227] [2022-11-20 12:34:02,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041783227] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:34:02,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:34:02,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:34:02,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400801838] [2022-11-20 12:34:02,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:34:02,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:34:02,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:34:02,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:34:02,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:34:02,914 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 277 [2022-11-20 12:34:02,916 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 247 transitions, 523 flow. Second operand has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:02,916 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:34:02,916 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 277 [2022-11-20 12:34:02,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:34:03,427 INFO L130 PetriNetUnfolder]: 254/1686 cut-off events. [2022-11-20 12:34:03,428 INFO L131 PetriNetUnfolder]: For 123/355 co-relation queries the response was YES. [2022-11-20 12:34:03,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2135 conditions, 1686 events. 254/1686 cut-off events. For 123/355 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 13579 event pairs, 20 based on Foata normal form. 0/1366 useless extension candidates. Maximal degree in co-relation 1600. Up to 327 conditions per place. [2022-11-20 12:34:03,459 INFO L137 encePairwiseOnDemand]: 271/277 looper letters, 32 selfloop transitions, 5 changer transitions 0/253 dead transitions. [2022-11-20 12:34:03,460 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 253 transitions, 616 flow [2022-11-20 12:34:03,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:34:03,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 12:34:03,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1460 transitions. [2022-11-20 12:34:03,464 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8784596871239471 [2022-11-20 12:34:03,465 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1460 transitions. [2022-11-20 12:34:03,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1460 transitions. [2022-11-20 12:34:03,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:34:03,466 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1460 transitions. [2022-11-20 12:34:03,470 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 243.33333333333334) internal successors, (1460), 6 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:03,473 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 277.0) internal successors, (1939), 7 states have internal predecessors, (1939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:03,475 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 277.0) internal successors, (1939), 7 states have internal predecessors, (1939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:03,475 INFO L175 Difference]: Start difference. First operand has 245 places, 247 transitions, 523 flow. Second operand 6 states and 1460 transitions. [2022-11-20 12:34:03,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 253 transitions, 616 flow [2022-11-20 12:34:03,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 253 transitions, 616 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 12:34:03,481 INFO L231 Difference]: Finished difference. Result has 249 places, 246 transitions, 531 flow [2022-11-20 12:34:03,481 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=521, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=531, PETRI_PLACES=249, PETRI_TRANSITIONS=246} [2022-11-20 12:34:03,484 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 4 predicate places. [2022-11-20 12:34:03,484 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 246 transitions, 531 flow [2022-11-20 12:34:03,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 239.0) internal successors, (1434), 6 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:03,485 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:34:03,485 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] [2022-11-20 12:34:03,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 12:34:03,486 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 12:34:03,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:34:03,487 INFO L85 PathProgramCache]: Analyzing trace with hash 860131294, now seen corresponding path program 1 times [2022-11-20 12:34:03,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:34:03,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218469599] [2022-11-20 12:34:03,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:34:03,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:34:03,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:03,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:34:03,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:34:03,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218469599] [2022-11-20 12:34:03,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218469599] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:34:03,645 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:34:03,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:34:03,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970498386] [2022-11-20 12:34:03,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:34:03,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:34:03,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:34:03,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:34:03,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:34:03,648 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 277 [2022-11-20 12:34:03,649 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 246 transitions, 531 flow. Second operand has 4 states, 4 states have (on average 242.0) internal successors, (968), 4 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:03,649 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:34:03,650 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 277 [2022-11-20 12:34:03,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:34:04,000 INFO L130 PetriNetUnfolder]: 138/945 cut-off events. [2022-11-20 12:34:04,000 INFO L131 PetriNetUnfolder]: For 104/378 co-relation queries the response was YES. [2022-11-20 12:34:04,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1309 conditions, 945 events. 138/945 cut-off events. For 104/378 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 7022 event pairs, 48 based on Foata normal form. 0/776 useless extension candidates. Maximal degree in co-relation 1060. Up to 126 conditions per place. [2022-11-20 12:34:04,030 INFO L137 encePairwiseOnDemand]: 271/277 looper letters, 36 selfloop transitions, 4 changer transitions 0/259 dead transitions. [2022-11-20 12:34:04,030 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 259 transitions, 644 flow [2022-11-20 12:34:04,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:34:04,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 12:34:04,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1002 transitions. [2022-11-20 12:34:04,033 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9043321299638989 [2022-11-20 12:34:04,034 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1002 transitions. [2022-11-20 12:34:04,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1002 transitions. [2022-11-20 12:34:04,035 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:34:04,035 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1002 transitions. [2022-11-20 12:34:04,038 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 250.5) internal successors, (1002), 4 states have internal predecessors, (1002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:04,041 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 277.0) internal successors, (1385), 5 states have internal predecessors, (1385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:04,042 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 277.0) internal successors, (1385), 5 states have internal predecessors, (1385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:04,042 INFO L175 Difference]: Start difference. First operand has 249 places, 246 transitions, 531 flow. Second operand 4 states and 1002 transitions. [2022-11-20 12:34:04,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 259 transitions, 644 flow [2022-11-20 12:34:04,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 259 transitions, 635 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 12:34:04,048 INFO L231 Difference]: Finished difference. Result has 250 places, 247 transitions, 546 flow [2022-11-20 12:34:04,049 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=546, PETRI_PLACES=250, PETRI_TRANSITIONS=247} [2022-11-20 12:34:04,050 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 5 predicate places. [2022-11-20 12:34:04,050 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 247 transitions, 546 flow [2022-11-20 12:34:04,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 242.0) internal successors, (968), 4 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:04,051 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:34:04,051 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] [2022-11-20 12:34:04,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 12:34:04,052 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 12:34:04,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:34:04,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1903561217, now seen corresponding path program 1 times [2022-11-20 12:34:04,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:34:04,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030840422] [2022-11-20 12:34:04,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:34:04,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:34:04,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:04,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:34:04,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:34:04,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030840422] [2022-11-20 12:34:04,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030840422] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:34:04,143 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:34:04,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:34:04,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023593196] [2022-11-20 12:34:04,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:34:04,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:34:04,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:34:04,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:34:04,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:34:04,146 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 277 [2022-11-20 12:34:04,147 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 247 transitions, 546 flow. Second operand has 4 states, 4 states have (on average 242.25) internal successors, (969), 4 states have internal predecessors, (969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:04,147 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:34:04,148 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 277 [2022-11-20 12:34:04,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:34:04,431 INFO L130 PetriNetUnfolder]: 81/918 cut-off events. [2022-11-20 12:34:04,431 INFO L131 PetriNetUnfolder]: For 55/59 co-relation queries the response was YES. [2022-11-20 12:34:04,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1238 conditions, 918 events. 81/918 cut-off events. For 55/59 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 6394 event pairs, 24 based on Foata normal form. 3/803 useless extension candidates. Maximal degree in co-relation 1062. Up to 72 conditions per place. [2022-11-20 12:34:04,453 INFO L137 encePairwiseOnDemand]: 273/277 looper letters, 37 selfloop transitions, 3 changer transitions 0/259 dead transitions. [2022-11-20 12:34:04,453 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 259 transitions, 654 flow [2022-11-20 12:34:04,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:34:04,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 12:34:04,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1001 transitions. [2022-11-20 12:34:04,456 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9034296028880866 [2022-11-20 12:34:04,456 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1001 transitions. [2022-11-20 12:34:04,457 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1001 transitions. [2022-11-20 12:34:04,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:34:04,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1001 transitions. [2022-11-20 12:34:04,459 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 250.25) internal successors, (1001), 4 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:04,462 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 277.0) internal successors, (1385), 5 states have internal predecessors, (1385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:04,462 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 277.0) internal successors, (1385), 5 states have internal predecessors, (1385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:04,462 INFO L175 Difference]: Start difference. First operand has 250 places, 247 transitions, 546 flow. Second operand 4 states and 1001 transitions. [2022-11-20 12:34:04,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 259 transitions, 654 flow [2022-11-20 12:34:04,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 259 transitions, 652 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:34:04,469 INFO L231 Difference]: Finished difference. Result has 252 places, 246 transitions, 544 flow [2022-11-20 12:34:04,470 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=538, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=544, PETRI_PLACES=252, PETRI_TRANSITIONS=246} [2022-11-20 12:34:04,472 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 7 predicate places. [2022-11-20 12:34:04,472 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 246 transitions, 544 flow [2022-11-20 12:34:04,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 242.25) internal successors, (969), 4 states have internal predecessors, (969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:04,474 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:34:04,474 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] [2022-11-20 12:34:04,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 12:34:04,475 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 12:34:04,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:34:04,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1119143714, now seen corresponding path program 1 times [2022-11-20 12:34:04,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:34:04,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566213973] [2022-11-20 12:34:04,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:34:04,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:34:04,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:04,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:34:04,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:34:04,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566213973] [2022-11-20 12:34:04,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566213973] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:34:04,608 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:34:04,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:34:04,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358246593] [2022-11-20 12:34:04,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:34:04,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:34:04,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:34:04,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:34:04,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:34:04,613 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 277 [2022-11-20 12:34:04,615 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 246 transitions, 544 flow. Second operand has 6 states, 6 states have (on average 239.16666666666666) internal successors, (1435), 6 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:04,615 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:34:04,616 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 277 [2022-11-20 12:34:04,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:34:04,927 INFO L130 PetriNetUnfolder]: 131/991 cut-off events. [2022-11-20 12:34:04,928 INFO L131 PetriNetUnfolder]: For 44/44 co-relation queries the response was YES. [2022-11-20 12:34:04,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1465 conditions, 991 events. 131/991 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 6887 event pairs, 2 based on Foata normal form. 0/889 useless extension candidates. Maximal degree in co-relation 1289. Up to 217 conditions per place. [2022-11-20 12:34:04,952 INFO L137 encePairwiseOnDemand]: 271/277 looper letters, 31 selfloop transitions, 5 changer transitions 0/253 dead transitions. [2022-11-20 12:34:04,953 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 253 transitions, 638 flow [2022-11-20 12:34:04,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:34:04,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 12:34:04,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1459 transitions. [2022-11-20 12:34:04,965 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8778580024067388 [2022-11-20 12:34:04,965 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1459 transitions. [2022-11-20 12:34:04,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1459 transitions. [2022-11-20 12:34:04,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:34:04,966 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1459 transitions. [2022-11-20 12:34:04,969 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 243.16666666666666) internal successors, (1459), 6 states have internal predecessors, (1459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:04,972 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 277.0) internal successors, (1939), 7 states have internal predecessors, (1939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:04,973 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 277.0) internal successors, (1939), 7 states have internal predecessors, (1939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:04,973 INFO L175 Difference]: Start difference. First operand has 252 places, 246 transitions, 544 flow. Second operand 6 states and 1459 transitions. [2022-11-20 12:34:04,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 253 transitions, 638 flow [2022-11-20 12:34:04,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 253 transitions, 633 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 12:34:04,979 INFO L231 Difference]: Finished difference. Result has 254 places, 245 transitions, 547 flow [2022-11-20 12:34:04,979 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=537, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=547, PETRI_PLACES=254, PETRI_TRANSITIONS=245} [2022-11-20 12:34:04,990 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 9 predicate places. [2022-11-20 12:34:04,990 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 245 transitions, 547 flow [2022-11-20 12:34:04,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 239.16666666666666) internal successors, (1435), 6 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:04,991 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:34:04,991 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] [2022-11-20 12:34:04,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 12:34:04,992 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 12:34:04,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:34:04,993 INFO L85 PathProgramCache]: Analyzing trace with hash -879934367, now seen corresponding path program 1 times [2022-11-20 12:34:04,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:34:04,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075842916] [2022-11-20 12:34:04,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:34:04,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:34:05,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:05,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:34:05,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:34:05,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075842916] [2022-11-20 12:34:05,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075842916] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:34:05,084 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:34:05,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:34:05,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933199721] [2022-11-20 12:34:05,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:34:05,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:34:05,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:34:05,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:34:05,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:34:05,087 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 277 [2022-11-20 12:34:05,089 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 245 transitions, 547 flow. Second operand has 5 states, 5 states have (on average 238.6) internal successors, (1193), 5 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:05,089 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:34:05,089 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 277 [2022-11-20 12:34:05,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:34:05,389 INFO L130 PetriNetUnfolder]: 95/947 cut-off events. [2022-11-20 12:34:05,389 INFO L131 PetriNetUnfolder]: For 38/42 co-relation queries the response was YES. [2022-11-20 12:34:05,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1327 conditions, 947 events. 95/947 cut-off events. For 38/42 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 6793 event pairs, 30 based on Foata normal form. 0/832 useless extension candidates. Maximal degree in co-relation 1151. Up to 90 conditions per place. [2022-11-20 12:34:05,437 INFO L137 encePairwiseOnDemand]: 270/277 looper letters, 44 selfloop transitions, 7 changer transitions 0/266 dead transitions. [2022-11-20 12:34:05,437 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 266 transitions, 703 flow [2022-11-20 12:34:05,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:34:05,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 12:34:05,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1468 transitions. [2022-11-20 12:34:05,442 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8832731648616126 [2022-11-20 12:34:05,442 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1468 transitions. [2022-11-20 12:34:05,442 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1468 transitions. [2022-11-20 12:34:05,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:34:05,444 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1468 transitions. [2022-11-20 12:34:05,448 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 244.66666666666666) internal successors, (1468), 6 states have internal predecessors, (1468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:05,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 277.0) internal successors, (1939), 7 states have internal predecessors, (1939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:05,452 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 277.0) internal successors, (1939), 7 states have internal predecessors, (1939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:05,453 INFO L175 Difference]: Start difference. First operand has 254 places, 245 transitions, 547 flow. Second operand 6 states and 1468 transitions. [2022-11-20 12:34:05,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 266 transitions, 703 flow [2022-11-20 12:34:05,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 266 transitions, 689 flow, removed 1 selfloop flow, removed 6 redundant places. [2022-11-20 12:34:05,460 INFO L231 Difference]: Finished difference. Result has 255 places, 248 transitions, 568 flow [2022-11-20 12:34:05,460 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=529, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=568, PETRI_PLACES=255, PETRI_TRANSITIONS=248} [2022-11-20 12:34:05,461 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 10 predicate places. [2022-11-20 12:34:05,461 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 248 transitions, 568 flow [2022-11-20 12:34:05,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 238.6) internal successors, (1193), 5 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:05,462 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:34:05,462 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] [2022-11-20 12:34:05,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 12:34:05,463 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 12:34:05,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:34:05,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1844755451, now seen corresponding path program 1 times [2022-11-20 12:34:05,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:34:05,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505288467] [2022-11-20 12:34:05,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:34:05,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:34:05,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:05,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:34:05,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:34:05,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505288467] [2022-11-20 12:34:05,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505288467] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:34:05,606 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:34:05,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:34:05,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500583824] [2022-11-20 12:34:05,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:34:05,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:34:05,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:34:05,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:34:05,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:34:05,610 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 277 [2022-11-20 12:34:05,613 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 248 transitions, 568 flow. Second operand has 6 states, 6 states have (on average 239.16666666666666) internal successors, (1435), 6 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:05,613 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:34:05,613 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 277 [2022-11-20 12:34:05,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:34:06,086 INFO L130 PetriNetUnfolder]: 375/1876 cut-off events. [2022-11-20 12:34:06,087 INFO L131 PetriNetUnfolder]: For 292/298 co-relation queries the response was YES. [2022-11-20 12:34:06,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2649 conditions, 1876 events. 375/1876 cut-off events. For 292/298 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 15568 event pairs, 4 based on Foata normal form. 0/1496 useless extension candidates. Maximal degree in co-relation 2466. Up to 574 conditions per place. [2022-11-20 12:34:06,110 INFO L137 encePairwiseOnDemand]: 271/277 looper letters, 31 selfloop transitions, 5 changer transitions 0/253 dead transitions. [2022-11-20 12:34:06,110 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 253 transitions, 654 flow [2022-11-20 12:34:06,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:34:06,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 12:34:06,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1459 transitions. [2022-11-20 12:34:06,114 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8778580024067388 [2022-11-20 12:34:06,115 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1459 transitions. [2022-11-20 12:34:06,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1459 transitions. [2022-11-20 12:34:06,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:34:06,116 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1459 transitions. [2022-11-20 12:34:06,120 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 243.16666666666666) internal successors, (1459), 6 states have internal predecessors, (1459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:06,123 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 277.0) internal successors, (1939), 7 states have internal predecessors, (1939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:06,124 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 277.0) internal successors, (1939), 7 states have internal predecessors, (1939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:06,124 INFO L175 Difference]: Start difference. First operand has 255 places, 248 transitions, 568 flow. Second operand 6 states and 1459 transitions. [2022-11-20 12:34:06,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 253 transitions, 654 flow [2022-11-20 12:34:06,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 253 transitions, 651 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:34:06,129 INFO L231 Difference]: Finished difference. Result has 258 places, 247 transitions, 573 flow [2022-11-20 12:34:06,130 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=563, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=573, PETRI_PLACES=258, PETRI_TRANSITIONS=247} [2022-11-20 12:34:06,130 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 13 predicate places. [2022-11-20 12:34:06,131 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 247 transitions, 573 flow [2022-11-20 12:34:06,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 239.16666666666666) internal successors, (1435), 6 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:06,132 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:34:06,132 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] [2022-11-20 12:34:06,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 12:34:06,132 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 12:34:06,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:34:06,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1352843323, now seen corresponding path program 1 times [2022-11-20 12:34:06,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:34:06,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548159247] [2022-11-20 12:34:06,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:34:06,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:34:06,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:06,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:34:06,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:34:06,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548159247] [2022-11-20 12:34:06,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548159247] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:34:06,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:34:06,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:34:06,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496106661] [2022-11-20 12:34:06,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:34:06,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:34:06,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:34:06,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:34:06,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:34:06,199 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 277 [2022-11-20 12:34:06,200 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 247 transitions, 573 flow. Second operand has 4 states, 4 states have (on average 242.25) internal successors, (969), 4 states have internal predecessors, (969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:06,201 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:34:06,201 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 277 [2022-11-20 12:34:06,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:34:06,629 INFO L130 PetriNetUnfolder]: 368/1772 cut-off events. [2022-11-20 12:34:06,629 INFO L131 PetriNetUnfolder]: For 369/629 co-relation queries the response was YES. [2022-11-20 12:34:06,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2578 conditions, 1772 events. 368/1772 cut-off events. For 369/629 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 17019 event pairs, 144 based on Foata normal form. 0/1356 useless extension candidates. Maximal degree in co-relation 2500. Up to 338 conditions per place. [2022-11-20 12:34:06,651 INFO L137 encePairwiseOnDemand]: 271/277 looper letters, 35 selfloop transitions, 4 changer transitions 0/259 dead transitions. [2022-11-20 12:34:06,651 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 259 transitions, 679 flow [2022-11-20 12:34:06,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:34:06,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 12:34:06,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1001 transitions. [2022-11-20 12:34:06,654 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9034296028880866 [2022-11-20 12:34:06,654 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1001 transitions. [2022-11-20 12:34:06,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1001 transitions. [2022-11-20 12:34:06,655 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:34:06,655 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1001 transitions. [2022-11-20 12:34:06,658 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 250.25) internal successors, (1001), 4 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:06,660 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 277.0) internal successors, (1385), 5 states have internal predecessors, (1385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:06,661 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 277.0) internal successors, (1385), 5 states have internal predecessors, (1385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:06,661 INFO L175 Difference]: Start difference. First operand has 258 places, 247 transitions, 573 flow. Second operand 4 states and 1001 transitions. [2022-11-20 12:34:06,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 259 transitions, 679 flow [2022-11-20 12:34:06,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 259 transitions, 670 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 12:34:06,666 INFO L231 Difference]: Finished difference. Result has 259 places, 248 transitions, 588 flow [2022-11-20 12:34:06,667 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=588, PETRI_PLACES=259, PETRI_TRANSITIONS=248} [2022-11-20 12:34:06,667 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 14 predicate places. [2022-11-20 12:34:06,668 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 248 transitions, 588 flow [2022-11-20 12:34:06,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 242.25) internal successors, (969), 4 states have internal predecessors, (969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:06,668 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:34:06,668 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] [2022-11-20 12:34:06,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 12:34:06,669 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 12:34:06,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:34:06,669 INFO L85 PathProgramCache]: Analyzing trace with hash 599333189, now seen corresponding path program 1 times [2022-11-20 12:34:06,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:34:06,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472629913] [2022-11-20 12:34:06,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:34:06,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:34:06,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:06,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:34:06,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:34:06,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472629913] [2022-11-20 12:34:06,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472629913] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:34:06,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:34:06,749 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:34:06,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384045185] [2022-11-20 12:34:06,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:34:06,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:34:06,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:34:06,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:34:06,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:34:06,754 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 277 [2022-11-20 12:34:06,755 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 248 transitions, 588 flow. Second operand has 4 states, 4 states have (on average 242.5) internal successors, (970), 4 states have internal predecessors, (970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:06,755 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:34:06,756 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 277 [2022-11-20 12:34:06,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:34:07,100 INFO L130 PetriNetUnfolder]: 129/1067 cut-off events. [2022-11-20 12:34:07,100 INFO L131 PetriNetUnfolder]: For 168/442 co-relation queries the response was YES. [2022-11-20 12:34:07,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1519 conditions, 1067 events. 129/1067 cut-off events. For 168/442 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 8271 event pairs, 48 based on Foata normal form. 5/912 useless extension candidates. Maximal degree in co-relation 1351. Up to 121 conditions per place. [2022-11-20 12:34:07,130 INFO L137 encePairwiseOnDemand]: 273/277 looper letters, 36 selfloop transitions, 3 changer transitions 0/259 dead transitions. [2022-11-20 12:34:07,131 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 259 transitions, 691 flow [2022-11-20 12:34:07,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:34:07,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 12:34:07,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1000 transitions. [2022-11-20 12:34:07,134 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9025270758122743 [2022-11-20 12:34:07,134 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1000 transitions. [2022-11-20 12:34:07,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1000 transitions. [2022-11-20 12:34:07,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:34:07,135 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1000 transitions. [2022-11-20 12:34:07,138 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 250.0) internal successors, (1000), 4 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:07,140 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 277.0) internal successors, (1385), 5 states have internal predecessors, (1385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:07,141 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 277.0) internal successors, (1385), 5 states have internal predecessors, (1385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:07,141 INFO L175 Difference]: Start difference. First operand has 259 places, 248 transitions, 588 flow. Second operand 4 states and 1000 transitions. [2022-11-20 12:34:07,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 259 transitions, 691 flow [2022-11-20 12:34:07,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 259 transitions, 689 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:34:07,146 INFO L231 Difference]: Finished difference. Result has 261 places, 247 transitions, 586 flow [2022-11-20 12:34:07,147 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=580, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=586, PETRI_PLACES=261, PETRI_TRANSITIONS=247} [2022-11-20 12:34:07,147 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 16 predicate places. [2022-11-20 12:34:07,148 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 247 transitions, 586 flow [2022-11-20 12:34:07,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 242.5) internal successors, (970), 4 states have internal predecessors, (970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:07,149 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:34:07,149 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] [2022-11-20 12:34:07,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 12:34:07,150 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 12:34:07,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:34:07,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1588430077, now seen corresponding path program 1 times [2022-11-20 12:34:07,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:34:07,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5662485] [2022-11-20 12:34:07,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:34:07,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:34:07,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:07,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:34:07,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:34:07,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5662485] [2022-11-20 12:34:07,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5662485] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:34:07,273 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:34:07,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:34:07,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914087394] [2022-11-20 12:34:07,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:34:07,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:34:07,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:34:07,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:34:07,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:34:07,276 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 277 [2022-11-20 12:34:07,278 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 247 transitions, 586 flow. Second operand has 8 states, 8 states have (on average 234.0) internal successors, (1872), 8 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:07,278 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:34:07,279 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 277 [2022-11-20 12:34:07,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:34:07,697 INFO L130 PetriNetUnfolder]: 123/1153 cut-off events. [2022-11-20 12:34:07,697 INFO L131 PetriNetUnfolder]: For 93/282 co-relation queries the response was YES. [2022-11-20 12:34:07,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1688 conditions, 1153 events. 123/1153 cut-off events. For 93/282 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 7813 event pairs, 4 based on Foata normal form. 8/1047 useless extension candidates. Maximal degree in co-relation 1500. Up to 126 conditions per place. [2022-11-20 12:34:07,722 INFO L137 encePairwiseOnDemand]: 267/277 looper letters, 41 selfloop transitions, 11 changer transitions 0/263 dead transitions. [2022-11-20 12:34:07,722 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 263 transitions, 736 flow [2022-11-20 12:34:07,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 12:34:07,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 12:34:07,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1906 transitions. [2022-11-20 12:34:07,728 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8601083032490975 [2022-11-20 12:34:07,728 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1906 transitions. [2022-11-20 12:34:07,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1906 transitions. [2022-11-20 12:34:07,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:34:07,730 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1906 transitions. [2022-11-20 12:34:07,735 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 238.25) internal successors, (1906), 8 states have internal predecessors, (1906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:07,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 277.0) internal successors, (2493), 9 states have internal predecessors, (2493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:07,740 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 277.0) internal successors, (2493), 9 states have internal predecessors, (2493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:07,741 INFO L175 Difference]: Start difference. First operand has 261 places, 247 transitions, 586 flow. Second operand 8 states and 1906 transitions. [2022-11-20 12:34:07,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 263 transitions, 736 flow [2022-11-20 12:34:07,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 263 transitions, 731 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 12:34:07,747 INFO L231 Difference]: Finished difference. Result has 268 places, 248 transitions, 617 flow [2022-11-20 12:34:07,748 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=581, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=617, PETRI_PLACES=268, PETRI_TRANSITIONS=248} [2022-11-20 12:34:07,749 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 23 predicate places. [2022-11-20 12:34:07,749 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 248 transitions, 617 flow [2022-11-20 12:34:07,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 234.0) internal successors, (1872), 8 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:07,750 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:34:07,750 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] [2022-11-20 12:34:07,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 12:34:07,750 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 12:34:07,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:34:07,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1399460440, now seen corresponding path program 1 times [2022-11-20 12:34:07,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:34:07,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233486652] [2022-11-20 12:34:07,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:34:07,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:34:07,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:07,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:34:07,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:34:07,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233486652] [2022-11-20 12:34:07,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233486652] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:34:07,842 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:34:07,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:34:07,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298686606] [2022-11-20 12:34:07,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:34:07,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:34:07,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:34:07,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:34:07,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:34:07,845 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 277 [2022-11-20 12:34:07,847 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 248 transitions, 617 flow. Second operand has 6 states, 6 states have (on average 239.33333333333334) internal successors, (1436), 6 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:07,847 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:34:07,848 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 277 [2022-11-20 12:34:07,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:34:08,491 INFO L130 PetriNetUnfolder]: 299/2594 cut-off events. [2022-11-20 12:34:08,492 INFO L131 PetriNetUnfolder]: For 242/508 co-relation queries the response was YES. [2022-11-20 12:34:08,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3459 conditions, 2594 events. 299/2594 cut-off events. For 242/508 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 24148 event pairs, 20 based on Foata normal form. 0/2234 useless extension candidates. Maximal degree in co-relation 2665. Up to 427 conditions per place. [2022-11-20 12:34:08,533 INFO L137 encePairwiseOnDemand]: 271/277 looper letters, 30 selfloop transitions, 5 changer transitions 0/254 dead transitions. [2022-11-20 12:34:08,533 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 254 transitions, 706 flow [2022-11-20 12:34:08,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:34:08,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 12:34:08,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1458 transitions. [2022-11-20 12:34:08,537 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8772563176895307 [2022-11-20 12:34:08,537 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1458 transitions. [2022-11-20 12:34:08,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1458 transitions. [2022-11-20 12:34:08,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:34:08,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1458 transitions. [2022-11-20 12:34:08,542 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 243.0) internal successors, (1458), 6 states have internal predecessors, (1458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:08,545 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 277.0) internal successors, (1939), 7 states have internal predecessors, (1939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:08,546 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 277.0) internal successors, (1939), 7 states have internal predecessors, (1939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:08,546 INFO L175 Difference]: Start difference. First operand has 268 places, 248 transitions, 617 flow. Second operand 6 states and 1458 transitions. [2022-11-20 12:34:08,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 254 transitions, 706 flow [2022-11-20 12:34:08,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 254 transitions, 697 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 12:34:08,553 INFO L231 Difference]: Finished difference. Result has 268 places, 247 transitions, 616 flow [2022-11-20 12:34:08,553 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=606, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=616, PETRI_PLACES=268, PETRI_TRANSITIONS=247} [2022-11-20 12:34:08,555 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 23 predicate places. [2022-11-20 12:34:08,555 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 247 transitions, 616 flow [2022-11-20 12:34:08,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 239.33333333333334) internal successors, (1436), 6 states have internal predecessors, (1436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:08,556 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:34:08,556 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] [2022-11-20 12:34:08,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 12:34:08,556 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 12:34:08,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:34:08,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1996691416, now seen corresponding path program 1 times [2022-11-20 12:34:08,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:34:08,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910049198] [2022-11-20 12:34:08,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:34:08,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:34:08,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:08,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:34:08,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:34:08,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910049198] [2022-11-20 12:34:08,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910049198] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:34:08,710 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:34:08,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:34:08,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841324149] [2022-11-20 12:34:08,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:34:08,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:34:08,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:34:08,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:34:08,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:34:08,713 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 277 [2022-11-20 12:34:08,715 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 247 transitions, 616 flow. Second operand has 8 states, 8 states have (on average 234.125) internal successors, (1873), 8 states have internal predecessors, (1873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:08,715 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:34:08,715 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 277 [2022-11-20 12:34:08,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:34:09,154 INFO L130 PetriNetUnfolder]: 111/1136 cut-off events. [2022-11-20 12:34:09,154 INFO L131 PetriNetUnfolder]: For 120/285 co-relation queries the response was YES. [2022-11-20 12:34:09,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1688 conditions, 1136 events. 111/1136 cut-off events. For 120/285 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 7568 event pairs, 4 based on Foata normal form. 8/1039 useless extension candidates. Maximal degree in co-relation 1500. Up to 119 conditions per place. [2022-11-20 12:34:09,174 INFO L137 encePairwiseOnDemand]: 267/277 looper letters, 43 selfloop transitions, 9 changer transitions 0/264 dead transitions. [2022-11-20 12:34:09,174 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 264 transitions, 770 flow [2022-11-20 12:34:09,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 12:34:09,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 12:34:09,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1908 transitions. [2022-11-20 12:34:09,179 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8610108303249098 [2022-11-20 12:34:09,179 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1908 transitions. [2022-11-20 12:34:09,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1908 transitions. [2022-11-20 12:34:09,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:34:09,181 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1908 transitions. [2022-11-20 12:34:09,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 238.5) internal successors, (1908), 8 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:09,189 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 277.0) internal successors, (2493), 9 states have internal predecessors, (2493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:09,189 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 277.0) internal successors, (2493), 9 states have internal predecessors, (2493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:09,190 INFO L175 Difference]: Start difference. First operand has 268 places, 247 transitions, 616 flow. Second operand 8 states and 1908 transitions. [2022-11-20 12:34:09,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 264 transitions, 770 flow [2022-11-20 12:34:09,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 264 transitions, 761 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 12:34:09,196 INFO L231 Difference]: Finished difference. Result has 273 places, 248 transitions, 637 flow [2022-11-20 12:34:09,196 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=607, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=637, PETRI_PLACES=273, PETRI_TRANSITIONS=248} [2022-11-20 12:34:09,197 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 28 predicate places. [2022-11-20 12:34:09,198 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 248 transitions, 637 flow [2022-11-20 12:34:09,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 234.125) internal successors, (1873), 8 states have internal predecessors, (1873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:09,199 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:34:09,199 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] [2022-11-20 12:34:09,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 12:34:09,199 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 12:34:09,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:34:09,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1432071963, now seen corresponding path program 1 times [2022-11-20 12:34:09,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:34:09,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064648283] [2022-11-20 12:34:09,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:34:09,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:34:09,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:09,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:34:09,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:34:09,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064648283] [2022-11-20 12:34:09,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064648283] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:34:09,282 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:34:09,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:34:09,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15886422] [2022-11-20 12:34:09,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:34:09,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:34:09,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:34:09,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:34:09,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:34:09,285 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 277 [2022-11-20 12:34:09,287 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 248 transitions, 637 flow. Second operand has 5 states, 5 states have (on average 238.8) internal successors, (1194), 5 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:09,287 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:34:09,287 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 277 [2022-11-20 12:34:09,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:34:09,686 INFO L130 PetriNetUnfolder]: 157/1119 cut-off events. [2022-11-20 12:34:09,687 INFO L131 PetriNetUnfolder]: For 172/514 co-relation queries the response was YES. [2022-11-20 12:34:09,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1678 conditions, 1119 events. 157/1119 cut-off events. For 172/514 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 9097 event pairs, 60 based on Foata normal form. 0/958 useless extension candidates. Maximal degree in co-relation 1506. Up to 153 conditions per place. [2022-11-20 12:34:09,731 INFO L137 encePairwiseOnDemand]: 270/277 looper letters, 43 selfloop transitions, 7 changer transitions 0/268 dead transitions. [2022-11-20 12:34:09,732 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 268 transitions, 788 flow [2022-11-20 12:34:09,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:34:09,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 12:34:09,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1467 transitions. [2022-11-20 12:34:09,736 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8826714801444043 [2022-11-20 12:34:09,736 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1467 transitions. [2022-11-20 12:34:09,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1467 transitions. [2022-11-20 12:34:09,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:34:09,737 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1467 transitions. [2022-11-20 12:34:09,740 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 244.5) internal successors, (1467), 6 states have internal predecessors, (1467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:09,743 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 277.0) internal successors, (1939), 7 states have internal predecessors, (1939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:09,744 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 277.0) internal successors, (1939), 7 states have internal predecessors, (1939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:09,744 INFO L175 Difference]: Start difference. First operand has 273 places, 248 transitions, 637 flow. Second operand 6 states and 1467 transitions. [2022-11-20 12:34:09,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 268 transitions, 788 flow [2022-11-20 12:34:09,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 268 transitions, 774 flow, removed 1 selfloop flow, removed 6 redundant places. [2022-11-20 12:34:09,751 INFO L231 Difference]: Finished difference. Result has 274 places, 251 transitions, 658 flow [2022-11-20 12:34:09,751 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=619, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=658, PETRI_PLACES=274, PETRI_TRANSITIONS=251} [2022-11-20 12:34:09,752 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 29 predicate places. [2022-11-20 12:34:09,752 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 251 transitions, 658 flow [2022-11-20 12:34:09,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 238.8) internal successors, (1194), 5 states have internal predecessors, (1194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:09,753 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:34:09,753 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] [2022-11-20 12:34:09,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 12:34:09,754 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 12:34:09,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:34:09,754 INFO L85 PathProgramCache]: Analyzing trace with hash 802900876, now seen corresponding path program 1 times [2022-11-20 12:34:09,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:34:09,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251674478] [2022-11-20 12:34:09,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:34:09,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:34:09,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:09,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:34:09,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:34:09,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251674478] [2022-11-20 12:34:09,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251674478] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:34:09,895 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:34:09,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:34:09,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402266231] [2022-11-20 12:34:09,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:34:09,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:34:09,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:34:09,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:34:09,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:34:09,898 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 277 [2022-11-20 12:34:09,899 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 251 transitions, 658 flow. Second operand has 6 states, 6 states have (on average 233.33333333333334) internal successors, (1400), 6 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:09,899 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:34:09,899 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 277 [2022-11-20 12:34:09,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:34:10,234 INFO L130 PetriNetUnfolder]: 114/894 cut-off events. [2022-11-20 12:34:10,235 INFO L131 PetriNetUnfolder]: For 132/136 co-relation queries the response was YES. [2022-11-20 12:34:10,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1532 conditions, 894 events. 114/894 cut-off events. For 132/136 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 6353 event pairs, 58 based on Foata normal form. 3/824 useless extension candidates. Maximal degree in co-relation 1413. Up to 153 conditions per place. [2022-11-20 12:34:10,261 INFO L137 encePairwiseOnDemand]: 269/277 looper letters, 49 selfloop transitions, 7 changer transitions 0/267 dead transitions. [2022-11-20 12:34:10,261 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 267 transitions, 817 flow [2022-11-20 12:34:10,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:34:10,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 12:34:10,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1663 transitions. [2022-11-20 12:34:10,265 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8576585869004641 [2022-11-20 12:34:10,265 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1663 transitions. [2022-11-20 12:34:10,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1663 transitions. [2022-11-20 12:34:10,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:34:10,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1663 transitions. [2022-11-20 12:34:10,270 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 237.57142857142858) internal successors, (1663), 7 states have internal predecessors, (1663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:10,274 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 277.0) internal successors, (2216), 8 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:10,274 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 277.0) internal successors, (2216), 8 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:10,275 INFO L175 Difference]: Start difference. First operand has 274 places, 251 transitions, 658 flow. Second operand 7 states and 1663 transitions. [2022-11-20 12:34:10,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 267 transitions, 817 flow [2022-11-20 12:34:10,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 267 transitions, 811 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 12:34:10,281 INFO L231 Difference]: Finished difference. Result has 281 places, 254 transitions, 688 flow [2022-11-20 12:34:10,281 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=648, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=688, PETRI_PLACES=281, PETRI_TRANSITIONS=254} [2022-11-20 12:34:10,282 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 36 predicate places. [2022-11-20 12:34:10,282 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 254 transitions, 688 flow [2022-11-20 12:34:10,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 233.33333333333334) internal successors, (1400), 6 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:10,283 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:34:10,283 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] [2022-11-20 12:34:10,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 12:34:10,283 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 12:34:10,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:34:10,284 INFO L85 PathProgramCache]: Analyzing trace with hash -152845688, now seen corresponding path program 1 times [2022-11-20 12:34:10,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:34:10,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573953162] [2022-11-20 12:34:10,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:34:10,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:34:10,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:10,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:34:10,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:34:10,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573953162] [2022-11-20 12:34:10,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573953162] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:34:10,404 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:34:10,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:34:10,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575900599] [2022-11-20 12:34:10,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:34:10,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:34:10,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:34:10,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:34:10,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:34:10,409 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 277 [2022-11-20 12:34:10,410 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 254 transitions, 688 flow. Second operand has 6 states, 6 states have (on average 233.5) internal successors, (1401), 6 states have internal predecessors, (1401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:10,411 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:34:10,411 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 277 [2022-11-20 12:34:10,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:34:10,761 INFO L130 PetriNetUnfolder]: 108/885 cut-off events. [2022-11-20 12:34:10,761 INFO L131 PetriNetUnfolder]: For 146/150 co-relation queries the response was YES. [2022-11-20 12:34:10,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1578 conditions, 885 events. 108/885 cut-off events. For 146/150 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 6249 event pairs, 46 based on Foata normal form. 3/829 useless extension candidates. Maximal degree in co-relation 1456. Up to 126 conditions per place. [2022-11-20 12:34:10,786 INFO L137 encePairwiseOnDemand]: 269/277 looper letters, 55 selfloop transitions, 8 changer transitions 0/276 dead transitions. [2022-11-20 12:34:10,786 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 276 transitions, 890 flow [2022-11-20 12:34:10,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:34:10,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 12:34:10,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1669 transitions. [2022-11-20 12:34:10,790 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8607529654461062 [2022-11-20 12:34:10,790 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1669 transitions. [2022-11-20 12:34:10,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1669 transitions. [2022-11-20 12:34:10,792 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:34:10,792 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1669 transitions. [2022-11-20 12:34:10,795 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 238.42857142857142) internal successors, (1669), 7 states have internal predecessors, (1669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:10,798 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 277.0) internal successors, (2216), 8 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:10,799 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 277.0) internal successors, (2216), 8 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:10,799 INFO L175 Difference]: Start difference. First operand has 281 places, 254 transitions, 688 flow. Second operand 7 states and 1669 transitions. [2022-11-20 12:34:10,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 276 transitions, 890 flow [2022-11-20 12:34:10,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 276 transitions, 888 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:34:10,806 INFO L231 Difference]: Finished difference. Result has 289 places, 258 transitions, 735 flow [2022-11-20 12:34:10,807 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=682, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=735, PETRI_PLACES=289, PETRI_TRANSITIONS=258} [2022-11-20 12:34:10,807 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 44 predicate places. [2022-11-20 12:34:10,807 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 258 transitions, 735 flow [2022-11-20 12:34:10,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 233.5) internal successors, (1401), 6 states have internal predecessors, (1401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:10,808 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:34:10,808 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] [2022-11-20 12:34:10,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-20 12:34:10,809 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 12:34:10,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:34:10,809 INFO L85 PathProgramCache]: Analyzing trace with hash -15634132, now seen corresponding path program 1 times [2022-11-20 12:34:10,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:34:10,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249219176] [2022-11-20 12:34:10,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:34:10,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:34:10,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:10,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:34:10,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:34:10,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249219176] [2022-11-20 12:34:10,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249219176] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:34:10,866 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:34:10,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:34:10,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88182763] [2022-11-20 12:34:10,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:34:10,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:34:10,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:34:10,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:34:10,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:34:10,868 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 277 [2022-11-20 12:34:10,869 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 258 transitions, 735 flow. Second operand has 4 states, 4 states have (on average 242.75) internal successors, (971), 4 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:10,869 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:34:10,870 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 277 [2022-11-20 12:34:10,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:34:11,342 INFO L130 PetriNetUnfolder]: 354/1760 cut-off events. [2022-11-20 12:34:11,342 INFO L131 PetriNetUnfolder]: For 526/784 co-relation queries the response was YES. [2022-11-20 12:34:11,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2757 conditions, 1760 events. 354/1760 cut-off events. For 526/784 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 17135 event pairs, 144 based on Foata normal form. 13/1394 useless extension candidates. Maximal degree in co-relation 2669. Up to 316 conditions per place. [2022-11-20 12:34:11,370 INFO L137 encePairwiseOnDemand]: 273/277 looper letters, 35 selfloop transitions, 3 changer transitions 0/268 dead transitions. [2022-11-20 12:34:11,370 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 268 transitions, 831 flow [2022-11-20 12:34:11,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:34:11,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 12:34:11,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 999 transitions. [2022-11-20 12:34:11,374 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9016245487364621 [2022-11-20 12:34:11,374 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 999 transitions. [2022-11-20 12:34:11,374 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 999 transitions. [2022-11-20 12:34:11,375 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:34:11,375 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 999 transitions. [2022-11-20 12:34:11,378 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 249.75) internal successors, (999), 4 states have internal predecessors, (999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:11,380 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 277.0) internal successors, (1385), 5 states have internal predecessors, (1385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:11,381 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 277.0) internal successors, (1385), 5 states have internal predecessors, (1385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:11,381 INFO L175 Difference]: Start difference. First operand has 289 places, 258 transitions, 735 flow. Second operand 4 states and 999 transitions. [2022-11-20 12:34:11,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 268 transitions, 831 flow [2022-11-20 12:34:11,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 268 transitions, 829 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:34:11,389 INFO L231 Difference]: Finished difference. Result has 291 places, 257 transitions, 733 flow [2022-11-20 12:34:11,389 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=727, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=733, PETRI_PLACES=291, PETRI_TRANSITIONS=257} [2022-11-20 12:34:11,390 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 46 predicate places. [2022-11-20 12:34:11,390 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 257 transitions, 733 flow [2022-11-20 12:34:11,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 242.75) internal successors, (971), 4 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:11,391 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:34:11,391 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] [2022-11-20 12:34:11,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-20 12:34:11,392 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 12:34:11,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:34:11,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1949702205, now seen corresponding path program 1 times [2022-11-20 12:34:11,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:34:11,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021304087] [2022-11-20 12:34:11,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:34:11,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:34:11,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:11,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:34:11,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:34:11,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021304087] [2022-11-20 12:34:11,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021304087] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:34:11,554 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:34:11,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:34:11,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685802302] [2022-11-20 12:34:11,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:34:11,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:34:11,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:34:11,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:34:11,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:34:11,558 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 277 [2022-11-20 12:34:11,560 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 257 transitions, 733 flow. Second operand has 8 states, 8 states have (on average 234.125) internal successors, (1873), 8 states have internal predecessors, (1873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:11,560 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:34:11,561 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 277 [2022-11-20 12:34:11,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:34:12,255 INFO L130 PetriNetUnfolder]: 241/1764 cut-off events. [2022-11-20 12:34:12,256 INFO L131 PetriNetUnfolder]: For 311/496 co-relation queries the response was YES. [2022-11-20 12:34:12,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2868 conditions, 1764 events. 241/1764 cut-off events. For 311/496 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 15461 event pairs, 7 based on Foata normal form. 2/1588 useless extension candidates. Maximal degree in co-relation 2595. Up to 209 conditions per place. [2022-11-20 12:34:12,310 INFO L137 encePairwiseOnDemand]: 267/277 looper letters, 40 selfloop transitions, 11 changer transitions 0/272 dead transitions. [2022-11-20 12:34:12,310 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 272 transitions, 878 flow [2022-11-20 12:34:12,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 12:34:12,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 12:34:12,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1905 transitions. [2022-11-20 12:34:12,315 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8596570397111913 [2022-11-20 12:34:12,315 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1905 transitions. [2022-11-20 12:34:12,315 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1905 transitions. [2022-11-20 12:34:12,317 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:34:12,317 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1905 transitions. [2022-11-20 12:34:12,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 238.125) internal successors, (1905), 8 states have internal predecessors, (1905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:12,324 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 277.0) internal successors, (2493), 9 states have internal predecessors, (2493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:12,325 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 277.0) internal successors, (2493), 9 states have internal predecessors, (2493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:12,326 INFO L175 Difference]: Start difference. First operand has 291 places, 257 transitions, 733 flow. Second operand 8 states and 1905 transitions. [2022-11-20 12:34:12,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 272 transitions, 878 flow [2022-11-20 12:34:12,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 272 transitions, 873 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 12:34:12,334 INFO L231 Difference]: Finished difference. Result has 298 places, 258 transitions, 764 flow [2022-11-20 12:34:12,334 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=728, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=764, PETRI_PLACES=298, PETRI_TRANSITIONS=258} [2022-11-20 12:34:12,335 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 53 predicate places. [2022-11-20 12:34:12,335 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 258 transitions, 764 flow [2022-11-20 12:34:12,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 234.125) internal successors, (1873), 8 states have internal predecessors, (1873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:12,336 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:34:12,336 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] [2022-11-20 12:34:12,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-20 12:34:12,336 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 12:34:12,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:34:12,337 INFO L85 PathProgramCache]: Analyzing trace with hash -484657265, now seen corresponding path program 1 times [2022-11-20 12:34:12,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:34:12,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628469672] [2022-11-20 12:34:12,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:34:12,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:34:12,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:12,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:34:12,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:34:12,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628469672] [2022-11-20 12:34:12,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628469672] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:34:12,413 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:34:12,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:34:12,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850490968] [2022-11-20 12:34:12,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:34:12,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:34:12,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:34:12,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:34:12,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:34:12,416 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 277 [2022-11-20 12:34:12,418 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 258 transitions, 764 flow. Second operand has 6 states, 6 states have (on average 239.5) internal successors, (1437), 6 states have internal predecessors, (1437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:12,418 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:34:12,418 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 277 [2022-11-20 12:34:12,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:34:13,052 INFO L130 PetriNetUnfolder]: 448/2549 cut-off events. [2022-11-20 12:34:13,053 INFO L131 PetriNetUnfolder]: For 594/600 co-relation queries the response was YES. [2022-11-20 12:34:13,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3949 conditions, 2549 events. 448/2549 cut-off events. For 594/600 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 23427 event pairs, 4 based on Foata normal form. 0/2131 useless extension candidates. Maximal degree in co-relation 3719. Up to 737 conditions per place. [2022-11-20 12:34:13,095 INFO L137 encePairwiseOnDemand]: 271/277 looper letters, 29 selfloop transitions, 5 changer transitions 0/263 dead transitions. [2022-11-20 12:34:13,096 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 263 transitions, 850 flow [2022-11-20 12:34:13,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:34:13,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 12:34:13,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1457 transitions. [2022-11-20 12:34:13,099 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8766546329723225 [2022-11-20 12:34:13,099 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1457 transitions. [2022-11-20 12:34:13,099 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1457 transitions. [2022-11-20 12:34:13,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:34:13,100 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1457 transitions. [2022-11-20 12:34:13,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 242.83333333333334) internal successors, (1457), 6 states have internal predecessors, (1457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:13,105 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 277.0) internal successors, (1939), 7 states have internal predecessors, (1939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:13,106 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 277.0) internal successors, (1939), 7 states have internal predecessors, (1939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:13,106 INFO L175 Difference]: Start difference. First operand has 298 places, 258 transitions, 764 flow. Second operand 6 states and 1457 transitions. [2022-11-20 12:34:13,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 263 transitions, 850 flow [2022-11-20 12:34:13,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 263 transitions, 837 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 12:34:13,114 INFO L231 Difference]: Finished difference. Result has 298 places, 257 transitions, 763 flow [2022-11-20 12:34:13,114 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=753, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=763, PETRI_PLACES=298, PETRI_TRANSITIONS=257} [2022-11-20 12:34:13,115 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 53 predicate places. [2022-11-20 12:34:13,115 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 257 transitions, 763 flow [2022-11-20 12:34:13,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 239.5) internal successors, (1437), 6 states have internal predecessors, (1437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:13,116 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:34:13,116 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] [2022-11-20 12:34:13,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-20 12:34:13,116 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 12:34:13,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:34:13,117 INFO L85 PathProgramCache]: Analyzing trace with hash 311226988, now seen corresponding path program 1 times [2022-11-20 12:34:13,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:34:13,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825781796] [2022-11-20 12:34:13,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:34:13,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:34:13,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:13,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:34:13,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:34:13,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825781796] [2022-11-20 12:34:13,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825781796] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:34:13,230 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:34:13,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:34:13,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193316647] [2022-11-20 12:34:13,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:34:13,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:34:13,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:34:13,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:34:13,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:34:13,233 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 277 [2022-11-20 12:34:13,235 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 257 transitions, 763 flow. Second operand has 8 states, 8 states have (on average 234.25) internal successors, (1874), 8 states have internal predecessors, (1874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:13,235 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:34:13,235 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 277 [2022-11-20 12:34:13,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:34:13,731 INFO L130 PetriNetUnfolder]: 205/1309 cut-off events. [2022-11-20 12:34:13,732 INFO L131 PetriNetUnfolder]: For 339/339 co-relation queries the response was YES. [2022-11-20 12:34:13,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2389 conditions, 1309 events. 205/1309 cut-off events. For 339/339 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 10159 event pairs, 2 based on Foata normal form. 0/1203 useless extension candidates. Maximal degree in co-relation 2316. Up to 195 conditions per place. [2022-11-20 12:34:13,753 INFO L137 encePairwiseOnDemand]: 267/277 looper letters, 42 selfloop transitions, 9 changer transitions 0/273 dead transitions. [2022-11-20 12:34:13,754 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 273 transitions, 912 flow [2022-11-20 12:34:13,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 12:34:13,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 12:34:13,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1907 transitions. [2022-11-20 12:34:13,757 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8605595667870036 [2022-11-20 12:34:13,757 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1907 transitions. [2022-11-20 12:34:13,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1907 transitions. [2022-11-20 12:34:13,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:34:13,758 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1907 transitions. [2022-11-20 12:34:13,761 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 238.375) internal successors, (1907), 8 states have internal predecessors, (1907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:13,765 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 277.0) internal successors, (2493), 9 states have internal predecessors, (2493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:13,765 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 277.0) internal successors, (2493), 9 states have internal predecessors, (2493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:13,766 INFO L175 Difference]: Start difference. First operand has 298 places, 257 transitions, 763 flow. Second operand 8 states and 1907 transitions. [2022-11-20 12:34:13,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 273 transitions, 912 flow [2022-11-20 12:34:13,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 273 transitions, 903 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 12:34:13,773 INFO L231 Difference]: Finished difference. Result has 303 places, 258 transitions, 784 flow [2022-11-20 12:34:13,774 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=754, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=784, PETRI_PLACES=303, PETRI_TRANSITIONS=258} [2022-11-20 12:34:13,774 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 58 predicate places. [2022-11-20 12:34:13,775 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 258 transitions, 784 flow [2022-11-20 12:34:13,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 234.25) internal successors, (1874), 8 states have internal predecessors, (1874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:13,775 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:34:13,776 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] [2022-11-20 12:34:13,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-20 12:34:13,776 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 12:34:13,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:34:13,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1023808942, now seen corresponding path program 1 times [2022-11-20 12:34:13,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:34:13,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965836973] [2022-11-20 12:34:13,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:34:13,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:34:13,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:13,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:34:13,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:34:13,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965836973] [2022-11-20 12:34:13,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965836973] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:34:13,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:34:13,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:34:13,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684523114] [2022-11-20 12:34:13,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:34:13,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:34:13,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:34:13,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:34:13,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:34:13,839 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 277 [2022-11-20 12:34:13,841 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 258 transitions, 784 flow. Second operand has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:13,841 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:34:13,841 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 277 [2022-11-20 12:34:13,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:34:14,378 INFO L130 PetriNetUnfolder]: 437/2141 cut-off events. [2022-11-20 12:34:14,378 INFO L131 PetriNetUnfolder]: For 518/822 co-relation queries the response was YES. [2022-11-20 12:34:14,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3355 conditions, 2141 events. 437/2141 cut-off events. For 518/822 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 21971 event pairs, 216 based on Foata normal form. 13/1689 useless extension candidates. Maximal degree in co-relation 3260. Up to 466 conditions per place. [2022-11-20 12:34:14,420 INFO L137 encePairwiseOnDemand]: 273/277 looper letters, 32 selfloop transitions, 3 changer transitions 0/268 dead transitions. [2022-11-20 12:34:14,420 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 268 transitions, 876 flow [2022-11-20 12:34:14,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:34:14,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 12:34:14,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 996 transitions. [2022-11-20 12:34:14,425 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8989169675090253 [2022-11-20 12:34:14,425 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 996 transitions. [2022-11-20 12:34:14,425 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 996 transitions. [2022-11-20 12:34:14,426 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:34:14,426 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 996 transitions. [2022-11-20 12:34:14,427 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 249.0) internal successors, (996), 4 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) [2022-11-20 12:34:14,430 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 277.0) internal successors, (1385), 5 states have internal predecessors, (1385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:14,430 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 277.0) internal successors, (1385), 5 states have internal predecessors, (1385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:14,431 INFO L175 Difference]: Start difference. First operand has 303 places, 258 transitions, 784 flow. Second operand 4 states and 996 transitions. [2022-11-20 12:34:14,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 268 transitions, 876 flow [2022-11-20 12:34:14,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 268 transitions, 865 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 12:34:14,437 INFO L231 Difference]: Finished difference. Result has 301 places, 258 transitions, 782 flow [2022-11-20 12:34:14,438 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=769, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=782, PETRI_PLACES=301, PETRI_TRANSITIONS=258} [2022-11-20 12:34:14,438 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 56 predicate places. [2022-11-20 12:34:14,439 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 258 transitions, 782 flow [2022-11-20 12:34:14,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 243.0) internal successors, (972), 4 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:14,439 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:34:14,439 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] [2022-11-20 12:34:14,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-20 12:34:14,440 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 12:34:14,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:34:14,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1785602928, now seen corresponding path program 1 times [2022-11-20 12:34:14,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:34:14,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388917159] [2022-11-20 12:34:14,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:34:14,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:34:14,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:14,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:34:14,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:34:14,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388917159] [2022-11-20 12:34:14,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388917159] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:34:14,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:34:14,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:34:14,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802320097] [2022-11-20 12:34:14,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:34:14,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:34:14,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:34:14,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:34:14,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:34:14,559 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 277 [2022-11-20 12:34:14,560 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 258 transitions, 782 flow. Second operand has 6 states, 6 states have (on average 233.5) internal successors, (1401), 6 states have internal predecessors, (1401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:14,561 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:34:14,561 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 277 [2022-11-20 12:34:14,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:34:15,060 INFO L130 PetriNetUnfolder]: 210/1103 cut-off events. [2022-11-20 12:34:15,061 INFO L131 PetriNetUnfolder]: For 369/668 co-relation queries the response was YES. [2022-11-20 12:34:15,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2050 conditions, 1103 events. 210/1103 cut-off events. For 369/668 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 9284 event pairs, 116 based on Foata normal form. 5/960 useless extension candidates. Maximal degree in co-relation 1870. Up to 271 conditions per place. [2022-11-20 12:34:15,103 INFO L137 encePairwiseOnDemand]: 269/277 looper letters, 48 selfloop transitions, 7 changer transitions 0/273 dead transitions. [2022-11-20 12:34:15,103 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 273 transitions, 936 flow [2022-11-20 12:34:15,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:34:15,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 12:34:15,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1662 transitions. [2022-11-20 12:34:15,107 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8571428571428571 [2022-11-20 12:34:15,107 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1662 transitions. [2022-11-20 12:34:15,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1662 transitions. [2022-11-20 12:34:15,108 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:34:15,108 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1662 transitions. [2022-11-20 12:34:15,110 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 237.42857142857142) internal successors, (1662), 7 states have internal predecessors, (1662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:15,113 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 277.0) internal successors, (2216), 8 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:15,114 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 277.0) internal successors, (2216), 8 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:15,114 INFO L175 Difference]: Start difference. First operand has 301 places, 258 transitions, 782 flow. Second operand 7 states and 1662 transitions. [2022-11-20 12:34:15,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 273 transitions, 936 flow [2022-11-20 12:34:15,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 304 places, 273 transitions, 931 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 12:34:15,121 INFO L231 Difference]: Finished difference. Result has 308 places, 261 transitions, 813 flow [2022-11-20 12:34:15,122 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=773, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=813, PETRI_PLACES=308, PETRI_TRANSITIONS=261} [2022-11-20 12:34:15,122 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 63 predicate places. [2022-11-20 12:34:15,123 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 261 transitions, 813 flow [2022-11-20 12:34:15,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 233.5) internal successors, (1401), 6 states have internal predecessors, (1401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:15,123 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:34:15,123 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] [2022-11-20 12:34:15,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-20 12:34:15,124 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 12:34:15,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:34:15,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1207915074, now seen corresponding path program 1 times [2022-11-20 12:34:15,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:34:15,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526720295] [2022-11-20 12:34:15,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:34:15,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:34:15,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:15,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:34:15,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:34:15,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526720295] [2022-11-20 12:34:15,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526720295] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:34:15,230 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:34:15,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:34:15,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929061253] [2022-11-20 12:34:15,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:34:15,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:34:15,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:34:15,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:34:15,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:34:15,233 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 277 [2022-11-20 12:34:15,235 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 261 transitions, 813 flow. Second operand has 6 states, 6 states have (on average 233.66666666666666) internal successors, (1402), 6 states have internal predecessors, (1402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:15,235 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:34:15,235 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 277 [2022-11-20 12:34:15,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:34:15,713 INFO L130 PetriNetUnfolder]: 198/1086 cut-off events. [2022-11-20 12:34:15,713 INFO L131 PetriNetUnfolder]: For 386/671 co-relation queries the response was YES. [2022-11-20 12:34:15,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2128 conditions, 1086 events. 198/1086 cut-off events. For 386/671 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 9073 event pairs, 92 based on Foata normal form. 5/974 useless extension candidates. Maximal degree in co-relation 1948. Up to 222 conditions per place. [2022-11-20 12:34:15,748 INFO L137 encePairwiseOnDemand]: 269/277 looper letters, 54 selfloop transitions, 8 changer transitions 0/282 dead transitions. [2022-11-20 12:34:15,749 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 282 transitions, 1010 flow [2022-11-20 12:34:15,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:34:15,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 12:34:15,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1668 transitions. [2022-11-20 12:34:15,752 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8602372356884992 [2022-11-20 12:34:15,752 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1668 transitions. [2022-11-20 12:34:15,752 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1668 transitions. [2022-11-20 12:34:15,753 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:34:15,753 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1668 transitions. [2022-11-20 12:34:15,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 238.28571428571428) internal successors, (1668), 7 states have internal predecessors, (1668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:15,758 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 277.0) internal successors, (2216), 8 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:15,759 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 277.0) internal successors, (2216), 8 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:15,759 INFO L175 Difference]: Start difference. First operand has 308 places, 261 transitions, 813 flow. Second operand 7 states and 1668 transitions. [2022-11-20 12:34:15,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 282 transitions, 1010 flow [2022-11-20 12:34:15,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 282 transitions, 1008 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:34:15,768 INFO L231 Difference]: Finished difference. Result has 316 places, 265 transitions, 860 flow [2022-11-20 12:34:15,769 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=807, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=860, PETRI_PLACES=316, PETRI_TRANSITIONS=265} [2022-11-20 12:34:15,769 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 71 predicate places. [2022-11-20 12:34:15,770 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 265 transitions, 860 flow [2022-11-20 12:34:15,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 233.66666666666666) internal successors, (1402), 6 states have internal predecessors, (1402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:15,771 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:34:15,771 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] [2022-11-20 12:34:15,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-20 12:34:15,771 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 12:34:15,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:34:15,772 INFO L85 PathProgramCache]: Analyzing trace with hash 627244916, now seen corresponding path program 1 times [2022-11-20 12:34:15,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:34:15,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034909169] [2022-11-20 12:34:15,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:34:15,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:34:15,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:15,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:34:15,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:34:15,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034909169] [2022-11-20 12:34:15,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034909169] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:34:15,912 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:34:15,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:34:15,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416304854] [2022-11-20 12:34:15,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:34:15,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:34:15,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:34:15,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:34:15,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:34:15,916 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 277 [2022-11-20 12:34:15,918 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 265 transitions, 860 flow. Second operand has 8 states, 8 states have (on average 234.25) internal successors, (1874), 8 states have internal predecessors, (1874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:15,918 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:34:15,918 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 277 [2022-11-20 12:34:15,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:34:16,725 INFO L130 PetriNetUnfolder]: 477/2445 cut-off events. [2022-11-20 12:34:16,725 INFO L131 PetriNetUnfolder]: For 654/800 co-relation queries the response was YES. [2022-11-20 12:34:16,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4094 conditions, 2445 events. 477/2445 cut-off events. For 654/800 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 24467 event pairs, 2 based on Foata normal form. 0/2035 useless extension candidates. Maximal degree in co-relation 3626. Up to 486 conditions per place. [2022-11-20 12:34:16,775 INFO L137 encePairwiseOnDemand]: 267/277 looper letters, 38 selfloop transitions, 9 changer transitions 0/279 dead transitions. [2022-11-20 12:34:16,776 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 279 transitions, 990 flow [2022-11-20 12:34:16,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 12:34:16,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 12:34:16,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1904 transitions. [2022-11-20 12:34:16,778 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8592057761732852 [2022-11-20 12:34:16,779 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1904 transitions. [2022-11-20 12:34:16,779 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1904 transitions. [2022-11-20 12:34:16,779 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:34:16,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1904 transitions. [2022-11-20 12:34:16,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 238.0) internal successors, (1904), 8 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:16,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 277.0) internal successors, (2493), 9 states have internal predecessors, (2493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:16,786 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 277.0) internal successors, (2493), 9 states have internal predecessors, (2493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:16,786 INFO L175 Difference]: Start difference. First operand has 316 places, 265 transitions, 860 flow. Second operand 8 states and 1904 transitions. [2022-11-20 12:34:16,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 279 transitions, 990 flow [2022-11-20 12:34:16,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 279 transitions, 990 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 12:34:16,795 INFO L231 Difference]: Finished difference. Result has 325 places, 266 transitions, 890 flow [2022-11-20 12:34:16,796 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=860, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=890, PETRI_PLACES=325, PETRI_TRANSITIONS=266} [2022-11-20 12:34:16,796 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 80 predicate places. [2022-11-20 12:34:16,796 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 266 transitions, 890 flow [2022-11-20 12:34:16,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 234.25) internal successors, (1874), 8 states have internal predecessors, (1874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:16,797 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:34:16,797 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] [2022-11-20 12:34:16,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-20 12:34:16,798 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 12:34:16,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:34:16,798 INFO L85 PathProgramCache]: Analyzing trace with hash -2030243245, now seen corresponding path program 1 times [2022-11-20 12:34:16,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:34:16,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364027275] [2022-11-20 12:34:16,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:34:16,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:34:16,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:16,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:34:16,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:34:16,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364027275] [2022-11-20 12:34:16,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364027275] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:34:16,923 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:34:16,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:34:16,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866085718] [2022-11-20 12:34:16,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:34:16,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:34:16,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:34:16,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:34:16,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:34:16,927 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 277 [2022-11-20 12:34:16,928 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 266 transitions, 890 flow. Second operand has 8 states, 8 states have (on average 234.375) internal successors, (1875), 8 states have internal predecessors, (1875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:16,928 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:34:16,929 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 277 [2022-11-20 12:34:16,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:34:17,664 INFO L130 PetriNetUnfolder]: 399/2339 cut-off events. [2022-11-20 12:34:17,664 INFO L131 PetriNetUnfolder]: For 710/833 co-relation queries the response was YES. [2022-11-20 12:34:17,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4028 conditions, 2339 events. 399/2339 cut-off events. For 710/833 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 23219 event pairs, 2 based on Foata normal form. 0/2019 useless extension candidates. Maximal degree in co-relation 3554. Up to 432 conditions per place. [2022-11-20 12:34:17,709 INFO L137 encePairwiseOnDemand]: 267/277 looper letters, 41 selfloop transitions, 9 changer transitions 0/282 dead transitions. [2022-11-20 12:34:17,709 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 282 transitions, 1037 flow [2022-11-20 12:34:17,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 12:34:17,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-20 12:34:17,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1906 transitions. [2022-11-20 12:34:17,713 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8601083032490975 [2022-11-20 12:34:17,713 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1906 transitions. [2022-11-20 12:34:17,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1906 transitions. [2022-11-20 12:34:17,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:34:17,714 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1906 transitions. [2022-11-20 12:34:17,717 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 238.25) internal successors, (1906), 8 states have internal predecessors, (1906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:17,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 277.0) internal successors, (2493), 9 states have internal predecessors, (2493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:17,720 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 277.0) internal successors, (2493), 9 states have internal predecessors, (2493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:17,720 INFO L175 Difference]: Start difference. First operand has 325 places, 266 transitions, 890 flow. Second operand 8 states and 1906 transitions. [2022-11-20 12:34:17,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 282 transitions, 1037 flow [2022-11-20 12:34:17,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 282 transitions, 1028 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 12:34:17,731 INFO L231 Difference]: Finished difference. Result has 330 places, 267 transitions, 911 flow [2022-11-20 12:34:17,731 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=881, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=911, PETRI_PLACES=330, PETRI_TRANSITIONS=267} [2022-11-20 12:34:17,732 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 85 predicate places. [2022-11-20 12:34:17,732 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 267 transitions, 911 flow [2022-11-20 12:34:17,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 234.375) internal successors, (1875), 8 states have internal predecessors, (1875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:17,733 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:34:17,733 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] [2022-11-20 12:34:17,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-20 12:34:17,733 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 12:34:17,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:34:17,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1375631753, now seen corresponding path program 1 times [2022-11-20 12:34:17,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:34:17,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618113075] [2022-11-20 12:34:17,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:34:17,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:34:17,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:17,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:34:17,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:34:17,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618113075] [2022-11-20 12:34:17,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618113075] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:34:17,840 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:34:17,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:34:17,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907142866] [2022-11-20 12:34:17,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:34:17,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:34:17,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:34:17,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:34:17,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:34:17,843 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 277 [2022-11-20 12:34:17,844 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 267 transitions, 911 flow. Second operand has 6 states, 6 states have (on average 233.66666666666666) internal successors, (1402), 6 states have internal predecessors, (1402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:17,844 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:34:17,845 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 277 [2022-11-20 12:34:17,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:34:18,474 INFO L130 PetriNetUnfolder]: 653/2286 cut-off events. [2022-11-20 12:34:18,474 INFO L131 PetriNetUnfolder]: For 1028/1321 co-relation queries the response was YES. [2022-11-20 12:34:18,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4397 conditions, 2286 events. 653/2286 cut-off events. For 1028/1321 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 25723 event pairs, 348 based on Foata normal form. 18/1810 useless extension candidates. Maximal degree in co-relation 4291. Up to 741 conditions per place. [2022-11-20 12:34:18,504 INFO L137 encePairwiseOnDemand]: 269/277 looper letters, 40 selfloop transitions, 7 changer transitions 4/281 dead transitions. [2022-11-20 12:34:18,504 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 281 transitions, 1049 flow [2022-11-20 12:34:18,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:34:18,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 12:34:18,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1661 transitions. [2022-11-20 12:34:18,506 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8566271273852502 [2022-11-20 12:34:18,506 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1661 transitions. [2022-11-20 12:34:18,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1661 transitions. [2022-11-20 12:34:18,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:34:18,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1661 transitions. [2022-11-20 12:34:18,510 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 237.28571428571428) internal successors, (1661), 7 states have internal predecessors, (1661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:18,512 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 277.0) internal successors, (2216), 8 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:18,513 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 277.0) internal successors, (2216), 8 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:18,513 INFO L175 Difference]: Start difference. First operand has 330 places, 267 transitions, 911 flow. Second operand 7 states and 1661 transitions. [2022-11-20 12:34:18,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 281 transitions, 1049 flow [2022-11-20 12:34:18,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 281 transitions, 1038 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 12:34:18,524 INFO L231 Difference]: Finished difference. Result has 334 places, 270 transitions, 936 flow [2022-11-20 12:34:18,524 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=896, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=936, PETRI_PLACES=334, PETRI_TRANSITIONS=270} [2022-11-20 12:34:18,525 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 89 predicate places. [2022-11-20 12:34:18,525 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 270 transitions, 936 flow [2022-11-20 12:34:18,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 233.66666666666666) internal successors, (1402), 6 states have internal predecessors, (1402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:18,526 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:34:18,526 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] [2022-11-20 12:34:18,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-20 12:34:18,526 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-20 12:34:18,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:34:18,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1032119673, now seen corresponding path program 1 times [2022-11-20 12:34:18,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:34:18,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599832981] [2022-11-20 12:34:18,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:34:18,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:34:18,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:34:18,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:34:18,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:34:18,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599832981] [2022-11-20 12:34:18,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599832981] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:34:18,643 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:34:18,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:34:18,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991834082] [2022-11-20 12:34:18,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:34:18,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:34:18,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:34:18,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:34:18,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:34:18,646 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 277 [2022-11-20 12:34:18,647 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 270 transitions, 936 flow. Second operand has 6 states, 6 states have (on average 233.83333333333334) internal successors, (1403), 6 states have internal predecessors, (1403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:18,647 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:34:18,647 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 277 [2022-11-20 12:34:18,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:34:19,334 INFO L130 PetriNetUnfolder]: 605/2225 cut-off events. [2022-11-20 12:34:19,334 INFO L131 PetriNetUnfolder]: For 1080/1357 co-relation queries the response was YES. [2022-11-20 12:34:19,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4598 conditions, 2225 events. 605/2225 cut-off events. For 1080/1357 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 24567 event pairs, 288 based on Foata normal form. 13/1846 useless extension candidates. Maximal degree in co-relation 4493. Up to 616 conditions per place. [2022-11-20 12:34:19,376 INFO L137 encePairwiseOnDemand]: 269/277 looper letters, 0 selfloop transitions, 0 changer transitions 291/291 dead transitions. [2022-11-20 12:34:19,377 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 291 transitions, 1130 flow [2022-11-20 12:34:19,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:34:19,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 12:34:19,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1667 transitions. [2022-11-20 12:34:19,379 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8597215059308922 [2022-11-20 12:34:19,379 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1667 transitions. [2022-11-20 12:34:19,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1667 transitions. [2022-11-20 12:34:19,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:34:19,380 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1667 transitions. [2022-11-20 12:34:19,382 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 238.14285714285714) internal successors, (1667), 7 states have internal predecessors, (1667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:19,384 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 277.0) internal successors, (2216), 8 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:19,385 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 277.0) internal successors, (2216), 8 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:19,385 INFO L175 Difference]: Start difference. First operand has 334 places, 270 transitions, 936 flow. Second operand 7 states and 1667 transitions. [2022-11-20 12:34:19,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 291 transitions, 1130 flow [2022-11-20 12:34:19,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 291 transitions, 1128 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:34:19,397 INFO L231 Difference]: Finished difference. Result has 338 places, 0 transitions, 0 flow [2022-11-20 12:34:19,397 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=930, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=338, PETRI_TRANSITIONS=0} [2022-11-20 12:34:19,398 INFO L288 CegarLoopForPetriNet]: 245 programPoint places, 93 predicate places. [2022-11-20 12:34:19,398 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 0 transitions, 0 flow [2022-11-20 12:34:19,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 233.83333333333334) internal successors, (1403), 6 states have internal predecessors, (1403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:34:19,401 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 39 remaining) [2022-11-20 12:34:19,401 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 39 remaining) [2022-11-20 12:34:19,402 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 39 remaining) [2022-11-20 12:34:19,402 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 39 remaining) [2022-11-20 12:34:19,402 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 39 remaining) [2022-11-20 12:34:19,402 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 39 remaining) [2022-11-20 12:34:19,403 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 39 remaining) [2022-11-20 12:34:19,403 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 39 remaining) [2022-11-20 12:34:19,403 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 39 remaining) [2022-11-20 12:34:19,403 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 39 remaining) [2022-11-20 12:34:19,403 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 39 remaining) [2022-11-20 12:34:19,404 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 39 remaining) [2022-11-20 12:34:19,404 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 39 remaining) [2022-11-20 12:34:19,404 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 39 remaining) [2022-11-20 12:34:19,404 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 39 remaining) [2022-11-20 12:34:19,405 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 39 remaining) [2022-11-20 12:34:19,405 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 39 remaining) [2022-11-20 12:34:19,405 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 39 remaining) [2022-11-20 12:34:19,405 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 39 remaining) [2022-11-20 12:34:19,405 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (19 of 39 remaining) [2022-11-20 12:34:19,406 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 39 remaining) [2022-11-20 12:34:19,406 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 39 remaining) [2022-11-20 12:34:19,406 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 39 remaining) [2022-11-20 12:34:19,406 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 39 remaining) [2022-11-20 12:34:19,406 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 39 remaining) [2022-11-20 12:34:19,407 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 39 remaining) [2022-11-20 12:34:19,407 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 39 remaining) [2022-11-20 12:34:19,407 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 39 remaining) [2022-11-20 12:34:19,407 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 39 remaining) [2022-11-20 12:34:19,407 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 39 remaining) [2022-11-20 12:34:19,407 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 39 remaining) [2022-11-20 12:34:19,408 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 39 remaining) [2022-11-20 12:34:19,408 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 39 remaining) [2022-11-20 12:34:19,408 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 39 remaining) [2022-11-20 12:34:19,408 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 39 remaining) [2022-11-20 12:34:19,408 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 39 remaining) [2022-11-20 12:34:19,409 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 39 remaining) [2022-11-20 12:34:19,409 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 39 remaining) [2022-11-20 12:34:19,409 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 39 remaining) [2022-11-20 12:34:19,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-20 12:34:19,410 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:34:19,415 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-20 12:34:19,415 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 12:34:19,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 12:34:19 BasicIcfg [2022-11-20 12:34:19,420 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 12:34:19,420 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 12:34:19,420 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 12:34:19,420 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 12:34:19,421 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:34:00" (3/4) ... [2022-11-20 12:34:19,423 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 12:34:19,429 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-20 12:34:19,429 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-20 12:34:19,429 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-11-20 12:34:19,433 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2022-11-20 12:34:19,433 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-20 12:34:19,433 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-20 12:34:19,433 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 12:34:19,463 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f3c656-c55f-4846-a895-f172a4c3dda3/bin/uautomizer-ug76WZFUDN/witness.graphml [2022-11-20 12:34:19,464 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 12:34:19,464 INFO L158 Benchmark]: Toolchain (without parser) took 19892.98ms. Allocated memory was 184.5MB in the beginning and 778.0MB in the end (delta: 593.5MB). Free memory was 153.4MB in the beginning and 516.0MB in the end (delta: -362.5MB). Peak memory consumption was 233.1MB. Max. memory is 16.1GB. [2022-11-20 12:34:19,465 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 121.6MB. Free memory is still 64.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 12:34:19,465 INFO L158 Benchmark]: CACSL2BoogieTranslator took 360.84ms. Allocated memory is still 184.5MB. Free memory was 152.9MB in the beginning and 141.8MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 12:34:19,465 INFO L158 Benchmark]: Boogie Procedure Inliner took 70.20ms. Allocated memory is still 184.5MB. Free memory was 141.8MB in the beginning and 139.5MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 12:34:19,466 INFO L158 Benchmark]: Boogie Preprocessor took 35.51ms. Allocated memory is still 184.5MB. Free memory was 139.5MB in the beginning and 138.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 12:34:19,466 INFO L158 Benchmark]: RCFGBuilder took 716.18ms. Allocated memory is still 184.5MB. Free memory was 138.2MB in the beginning and 116.6MB in the end (delta: 21.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-11-20 12:34:19,466 INFO L158 Benchmark]: TraceAbstraction took 18644.48ms. Allocated memory was 184.5MB in the beginning and 778.0MB in the end (delta: 593.5MB). Free memory was 116.1MB in the beginning and 519.1MB in the end (delta: -403.1MB). Peak memory consumption was 193.2MB. Max. memory is 16.1GB. [2022-11-20 12:34:19,467 INFO L158 Benchmark]: Witness Printer took 43.60ms. Allocated memory is still 778.0MB. Free memory was 519.1MB in the beginning and 516.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 12:34:19,468 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 121.6MB. Free memory is still 64.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 360.84ms. Allocated memory is still 184.5MB. Free memory was 152.9MB in the beginning and 141.8MB in the end (delta: 11.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 70.20ms. Allocated memory is still 184.5MB. Free memory was 141.8MB in the beginning and 139.5MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.51ms. Allocated memory is still 184.5MB. Free memory was 139.5MB in the beginning and 138.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 716.18ms. Allocated memory is still 184.5MB. Free memory was 138.2MB in the beginning and 116.6MB in the end (delta: 21.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 18644.48ms. Allocated memory was 184.5MB in the beginning and 778.0MB in the end (delta: 593.5MB). Free memory was 116.1MB in the beginning and 519.1MB in the end (delta: -403.1MB). Peak memory consumption was 193.2MB. Max. memory is 16.1GB. * Witness Printer took 43.60ms. Allocated memory is still 778.0MB. Free memory was 519.1MB in the beginning and 516.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 86]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 86]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 86]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 86]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 86]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 86]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 433 locations, 39 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 18.4s, OverallIterations: 27, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 14.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1526 SdHoareTripleChecker+Valid, 1.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1526 mSDsluCounter, 740 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 363 mSDsCounter, 78 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2399 IncrementalHoareTripleChecker+Invalid, 2477 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 78 mSolverCounterUnsat, 377 mSDtfsCounter, 2399 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 195 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=936occurred in iteration=26, InterpolantAutomatonStates: 166, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 2013 NumberOfCodeBlocks, 2013 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 1986 ConstructedInterpolants, 0 QuantifiedInterpolants, 4157 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 27 InterpolantComputations, 27 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 18 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-20 12:34:19,493 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80f3c656-c55f-4846-a895-f172a4c3dda3/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE