./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-file-item-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b88e5be5-7f00-4fa9-be7e-1ef8d69eeec0/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b88e5be5-7f00-4fa9-be7e-1ef8d69eeec0/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b88e5be5-7f00-4fa9-be7e-1ef8d69eeec0/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b88e5be5-7f00-4fa9-be7e-1ef8d69eeec0/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-file-item-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b88e5be5-7f00-4fa9-be7e-1ef8d69eeec0/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b88e5be5-7f00-4fa9-be7e-1ef8d69eeec0/bin/uautomizer-tPACEb0tL8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7850c8f92b7e0b0b866687e8f3ea719169cacbc5985a977f15b280bf9bb53b5b --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 12:02:33,748 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:02:33,751 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:02:33,794 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:02:33,795 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:02:33,796 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:02:33,797 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:02:33,801 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:02:33,807 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:02:33,815 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:02:33,817 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:02:33,821 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:02:33,821 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:02:33,823 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:02:33,824 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:02:33,825 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:02:33,826 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:02:33,827 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:02:33,829 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:02:33,830 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:02:33,836 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:02:33,838 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:02:33,843 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:02:33,844 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:02:33,855 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:02:33,856 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:02:33,856 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:02:33,858 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:02:33,859 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:02:33,860 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:02:33,861 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:02:33,862 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:02:33,864 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:02:33,866 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:02:33,867 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:02:33,868 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:02:33,869 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:02:33,869 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:02:33,869 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:02:33,870 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:02:33,871 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:02:33,872 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b88e5be5-7f00-4fa9-be7e-1ef8d69eeec0/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 12:02:33,921 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:02:33,921 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:02:33,922 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:02:33,922 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:02:33,923 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:02:33,923 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:02:33,924 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:02:33,924 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:02:33,925 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:02:33,925 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:02:33,926 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:02:33,926 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:02:33,927 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:02:33,927 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:02:33,927 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:02:33,927 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:02:33,927 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:02:33,928 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:02:33,928 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 12:02:33,928 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:02:33,928 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:02:33,929 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:02:33,929 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:02:33,929 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:02:33,929 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:02:33,930 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:02:33,931 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:02:33,932 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:02:33,932 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:02:33,932 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:02:33,932 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:02:33,933 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:02:33,933 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:02:33,933 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:02:33,934 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:02:33,934 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_b88e5be5-7f00-4fa9-be7e-1ef8d69eeec0/bin/uautomizer-tPACEb0tL8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b88e5be5-7f00-4fa9-be7e-1ef8d69eeec0/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7850c8f92b7e0b0b866687e8f3ea719169cacbc5985a977f15b280bf9bb53b5b [2022-11-16 12:02:34,246 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:02:34,270 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:02:34,273 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:02:34,274 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:02:34,275 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:02:34,277 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b88e5be5-7f00-4fa9-be7e-1ef8d69eeec0/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/chl-file-item-trans.wvr.c [2022-11-16 12:02:34,331 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b88e5be5-7f00-4fa9-be7e-1ef8d69eeec0/bin/uautomizer-tPACEb0tL8/data/7d186ec9c/282fc9f518134be994032be13fb98536/FLAGfcc7110f7 [2022-11-16 12:02:34,853 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:02:34,854 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b88e5be5-7f00-4fa9-be7e-1ef8d69eeec0/sv-benchmarks/c/weaver/chl-file-item-trans.wvr.c [2022-11-16 12:02:34,870 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b88e5be5-7f00-4fa9-be7e-1ef8d69eeec0/bin/uautomizer-tPACEb0tL8/data/7d186ec9c/282fc9f518134be994032be13fb98536/FLAGfcc7110f7 [2022-11-16 12:02:35,203 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b88e5be5-7f00-4fa9-be7e-1ef8d69eeec0/bin/uautomizer-tPACEb0tL8/data/7d186ec9c/282fc9f518134be994032be13fb98536 [2022-11-16 12:02:35,208 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:02:35,211 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:02:35,212 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:02:35,213 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:02:35,216 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:02:35,217 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:02:35" (1/1) ... [2022-11-16 12:02:35,219 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@766e31ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:02:35, skipping insertion in model container [2022-11-16 12:02:35,220 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:02:35" (1/1) ... [2022-11-16 12:02:35,231 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:02:35,255 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:02:35,535 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b88e5be5-7f00-4fa9-be7e-1ef8d69eeec0/sv-benchmarks/c/weaver/chl-file-item-trans.wvr.c[2817,2830] [2022-11-16 12:02:35,539 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:02:35,552 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:02:35,592 WARN L229 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b88e5be5-7f00-4fa9-be7e-1ef8d69eeec0/sv-benchmarks/c/weaver/chl-file-item-trans.wvr.c[2817,2830] [2022-11-16 12:02:35,594 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:02:35,619 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:02:35,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:02:35 WrapperNode [2022-11-16 12:02:35,619 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:02:35,621 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:02:35,621 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:02:35,621 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:02:35,629 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:02:35" (1/1) ... [2022-11-16 12:02:35,652 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:02:35" (1/1) ... [2022-11-16 12:02:35,696 INFO L138 Inliner]: procedures = 23, calls = 30, calls flagged for inlining = 8, calls inlined = 12, statements flattened = 235 [2022-11-16 12:02:35,696 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:02:35,697 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:02:35,697 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:02:35,697 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:02:35,708 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:02:35" (1/1) ... [2022-11-16 12:02:35,708 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:02:35" (1/1) ... [2022-11-16 12:02:35,723 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:02:35" (1/1) ... [2022-11-16 12:02:35,723 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:02:35" (1/1) ... [2022-11-16 12:02:35,729 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:02:35" (1/1) ... [2022-11-16 12:02:35,731 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:02:35" (1/1) ... [2022-11-16 12:02:35,733 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:02:35" (1/1) ... [2022-11-16 12:02:35,734 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:02:35" (1/1) ... [2022-11-16 12:02:35,760 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:02:35,761 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:02:35,761 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:02:35,761 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:02:35,762 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:02:35" (1/1) ... [2022-11-16 12:02:35,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:02:35,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b88e5be5-7f00-4fa9-be7e-1ef8d69eeec0/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:02:35,800 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b88e5be5-7f00-4fa9-be7e-1ef8d69eeec0/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:02:35,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b88e5be5-7f00-4fa9-be7e-1ef8d69eeec0/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:02:35,847 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:02:35,847 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 12:02:35,847 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 12:02:35,848 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 12:02:35,848 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 12:02:35,849 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-16 12:02:35,849 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-16 12:02:35,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:02:35,850 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:02:35,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:02:35,851 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:02:35,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:02:35,851 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:02:35,851 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:02:35,852 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 12:02:36,036 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:02:36,038 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:02:36,438 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:02:36,448 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:02:36,458 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 12:02:36,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:02:36 BoogieIcfgContainer [2022-11-16 12:02:36,462 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:02:36,464 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:02:36,465 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:02:36,469 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:02:36,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:02:35" (1/3) ... [2022-11-16 12:02:36,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ccee8e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:02:36, skipping insertion in model container [2022-11-16 12:02:36,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:02:35" (2/3) ... [2022-11-16 12:02:36,471 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ccee8e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:02:36, skipping insertion in model container [2022-11-16 12:02:36,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:02:36" (3/3) ... [2022-11-16 12:02:36,472 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-file-item-trans.wvr.c [2022-11-16 12:02:36,482 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 12:02:36,492 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:02:36,492 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2022-11-16 12:02:36,492 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:02:36,712 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-16 12:02:36,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 298 places, 313 transitions, 650 flow [2022-11-16 12:02:36,938 INFO L130 PetriNetUnfolder]: 25/310 cut-off events. [2022-11-16 12:02:36,938 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-16 12:02:36,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 323 conditions, 310 events. 25/310 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 879 event pairs, 0 based on Foata normal form. 0/267 useless extension candidates. Maximal degree in co-relation 235. Up to 2 conditions per place. [2022-11-16 12:02:36,948 INFO L82 GeneralOperation]: Start removeDead. Operand has 298 places, 313 transitions, 650 flow [2022-11-16 12:02:36,956 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 275 places, 289 transitions, 593 flow [2022-11-16 12:02:36,966 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:02:36,973 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;@2f658ff6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:02:36,973 INFO L358 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2022-11-16 12:02:36,997 INFO L130 PetriNetUnfolder]: 6/120 cut-off events. [2022-11-16 12:02:36,997 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:02:36,998 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:02:36,998 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] [2022-11-16 12:02:36,999 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 12:02:37,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:02:37,004 INFO L85 PathProgramCache]: Analyzing trace with hash -156793447, now seen corresponding path program 1 times [2022-11-16 12:02:37,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:02:37,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587863491] [2022-11-16 12:02:37,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:02:37,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:02:37,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:02:37,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:02:37,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:02:37,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587863491] [2022-11-16 12:02:37,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587863491] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:02:37,540 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:02:37,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:02:37,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305360624] [2022-11-16 12:02:37,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:02:37,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:02:37,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:02:37,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:02:37,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:02:37,609 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 313 [2022-11-16 12:02:37,619 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 289 transitions, 593 flow. Second operand has 6 states, 6 states have (on average 274.8333333333333) internal successors, (1649), 6 states have internal predecessors, (1649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:37,619 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:02:37,620 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 313 [2022-11-16 12:02:37,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:02:38,017 INFO L130 PetriNetUnfolder]: 119/691 cut-off events. [2022-11-16 12:02:38,017 INFO L131 PetriNetUnfolder]: For 73/73 co-relation queries the response was YES. [2022-11-16 12:02:38,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1011 conditions, 691 events. 119/691 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 3876 event pairs, 2 based on Foata normal form. 118/718 useless extension candidates. Maximal degree in co-relation 912. Up to 164 conditions per place. [2022-11-16 12:02:38,036 INFO L137 encePairwiseOnDemand]: 301/313 looper letters, 33 selfloop transitions, 5 changer transitions 0/290 dead transitions. [2022-11-16 12:02:38,037 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 290 transitions, 689 flow [2022-11-16 12:02:38,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:02:38,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 12:02:38,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1691 transitions. [2022-11-16 12:02:38,056 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9004259850905219 [2022-11-16 12:02:38,057 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1691 transitions. [2022-11-16 12:02:38,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1691 transitions. [2022-11-16 12:02:38,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:02:38,063 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1691 transitions. [2022-11-16 12:02:38,070 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 281.8333333333333) internal successors, (1691), 6 states have internal predecessors, (1691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:38,080 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 313.0) internal successors, (2191), 7 states have internal predecessors, (2191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:38,081 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 313.0) internal successors, (2191), 7 states have internal predecessors, (2191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:38,083 INFO L175 Difference]: Start difference. First operand has 275 places, 289 transitions, 593 flow. Second operand 6 states and 1691 transitions. [2022-11-16 12:02:38,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 290 transitions, 689 flow [2022-11-16 12:02:38,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 290 transitions, 670 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 12:02:38,095 INFO L231 Difference]: Finished difference. Result has 274 places, 282 transitions, 580 flow [2022-11-16 12:02:38,097 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=570, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=580, PETRI_PLACES=274, PETRI_TRANSITIONS=282} [2022-11-16 12:02:38,101 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, -1 predicate places. [2022-11-16 12:02:38,101 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 282 transitions, 580 flow [2022-11-16 12:02:38,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 274.8333333333333) internal successors, (1649), 6 states have internal predecessors, (1649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:38,103 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:02:38,103 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] [2022-11-16 12:02:38,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:02:38,104 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 12:02:38,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:02:38,104 INFO L85 PathProgramCache]: Analyzing trace with hash -565628769, now seen corresponding path program 1 times [2022-11-16 12:02:38,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:02:38,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306724848] [2022-11-16 12:02:38,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:02:38,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:02:38,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:02:38,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:02:38,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:02:38,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306724848] [2022-11-16 12:02:38,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306724848] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:02:38,293 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:02:38,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:02:38,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955707695] [2022-11-16 12:02:38,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:02:38,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:02:38,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:02:38,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:02:38,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:02:38,304 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 313 [2022-11-16 12:02:38,306 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 282 transitions, 580 flow. Second operand has 4 states, 4 states have (on average 277.75) internal successors, (1111), 4 states have internal predecessors, (1111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:38,311 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:02:38,311 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 313 [2022-11-16 12:02:38,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:02:38,647 INFO L130 PetriNetUnfolder]: 101/880 cut-off events. [2022-11-16 12:02:38,647 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2022-11-16 12:02:38,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1133 conditions, 880 events. 101/880 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 5690 event pairs, 24 based on Foata normal form. 0/748 useless extension candidates. Maximal degree in co-relation 712. Up to 71 conditions per place. [2022-11-16 12:02:38,670 INFO L137 encePairwiseOnDemand]: 307/313 looper letters, 37 selfloop transitions, 4 changer transitions 0/296 dead transitions. [2022-11-16 12:02:38,670 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 296 transitions, 698 flow [2022-11-16 12:02:38,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:02:38,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 12:02:38,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1147 transitions. [2022-11-16 12:02:38,674 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9161341853035144 [2022-11-16 12:02:38,675 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1147 transitions. [2022-11-16 12:02:38,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1147 transitions. [2022-11-16 12:02:38,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:02:38,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1147 transitions. [2022-11-16 12:02:38,679 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 286.75) internal successors, (1147), 4 states have internal predecessors, (1147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:38,682 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 313.0) internal successors, (1565), 5 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:38,683 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 313.0) internal successors, (1565), 5 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:38,683 INFO L175 Difference]: Start difference. First operand has 274 places, 282 transitions, 580 flow. Second operand 4 states and 1147 transitions. [2022-11-16 12:02:38,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 296 transitions, 698 flow [2022-11-16 12:02:38,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 296 transitions, 689 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 12:02:38,712 INFO L231 Difference]: Finished difference. Result has 275 places, 283 transitions, 595 flow [2022-11-16 12:02:38,713 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=569, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=595, PETRI_PLACES=275, PETRI_TRANSITIONS=283} [2022-11-16 12:02:38,715 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 0 predicate places. [2022-11-16 12:02:38,715 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 283 transitions, 595 flow [2022-11-16 12:02:38,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 277.75) internal successors, (1111), 4 states have internal predecessors, (1111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:38,717 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:02:38,717 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] [2022-11-16 12:02:38,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:02:38,718 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 12:02:38,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:02:38,720 INFO L85 PathProgramCache]: Analyzing trace with hash 134607197, now seen corresponding path program 1 times [2022-11-16 12:02:38,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:02:38,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74286803] [2022-11-16 12:02:38,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:02:38,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:02:38,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:02:38,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:02:38,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:02:38,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74286803] [2022-11-16 12:02:38,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74286803] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:02:38,942 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:02:38,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:02:38,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717805979] [2022-11-16 12:02:38,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:02:38,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:02:38,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:02:38,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:02:38,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:02:38,946 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 313 [2022-11-16 12:02:38,950 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 283 transitions, 595 flow. Second operand has 6 states, 6 states have (on average 275.0) internal successors, (1650), 6 states have internal predecessors, (1650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:38,950 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:02:38,951 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 313 [2022-11-16 12:02:38,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:02:39,436 INFO L130 PetriNetUnfolder]: 236/1250 cut-off events. [2022-11-16 12:02:39,436 INFO L131 PetriNetUnfolder]: For 123/161 co-relation queries the response was YES. [2022-11-16 12:02:39,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1699 conditions, 1250 events. 236/1250 cut-off events. For 123/161 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 9139 event pairs, 6 based on Foata normal form. 0/1030 useless extension candidates. Maximal degree in co-relation 1475. Up to 327 conditions per place. [2022-11-16 12:02:39,465 INFO L137 encePairwiseOnDemand]: 307/313 looper letters, 32 selfloop transitions, 5 changer transitions 0/289 dead transitions. [2022-11-16 12:02:39,465 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 289 transitions, 688 flow [2022-11-16 12:02:39,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:02:39,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 12:02:39,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1676 transitions. [2022-11-16 12:02:39,470 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8924387646432375 [2022-11-16 12:02:39,471 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1676 transitions. [2022-11-16 12:02:39,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1676 transitions. [2022-11-16 12:02:39,472 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:02:39,472 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1676 transitions. [2022-11-16 12:02:39,476 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 279.3333333333333) internal successors, (1676), 6 states have internal predecessors, (1676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:39,479 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 313.0) internal successors, (2191), 7 states have internal predecessors, (2191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:39,481 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 313.0) internal successors, (2191), 7 states have internal predecessors, (2191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:39,481 INFO L175 Difference]: Start difference. First operand has 275 places, 283 transitions, 595 flow. Second operand 6 states and 1676 transitions. [2022-11-16 12:02:39,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 289 transitions, 688 flow [2022-11-16 12:02:39,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 289 transitions, 688 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:02:39,488 INFO L231 Difference]: Finished difference. Result has 279 places, 282 transitions, 603 flow [2022-11-16 12:02:39,488 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=593, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=603, PETRI_PLACES=279, PETRI_TRANSITIONS=282} [2022-11-16 12:02:39,490 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 4 predicate places. [2022-11-16 12:02:39,491 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 282 transitions, 603 flow [2022-11-16 12:02:39,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 275.0) internal successors, (1650), 6 states have internal predecessors, (1650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:39,492 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:02:39,493 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] [2022-11-16 12:02:39,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 12:02:39,493 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 12:02:39,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:02:39,494 INFO L85 PathProgramCache]: Analyzing trace with hash -122143325, now seen corresponding path program 1 times [2022-11-16 12:02:39,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:02:39,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203595071] [2022-11-16 12:02:39,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:02:39,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:02:39,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:02:39,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:02:39,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:02:39,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203595071] [2022-11-16 12:02:39,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203595071] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:02:39,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:02:39,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:02:39,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595661283] [2022-11-16 12:02:39,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:02:39,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:02:39,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:02:39,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:02:39,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:02:39,643 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 313 [2022-11-16 12:02:39,644 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 282 transitions, 603 flow. Second operand has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:39,645 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:02:39,645 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 313 [2022-11-16 12:02:39,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:02:40,054 INFO L130 PetriNetUnfolder]: 148/1049 cut-off events. [2022-11-16 12:02:40,054 INFO L131 PetriNetUnfolder]: For 104/400 co-relation queries the response was YES. [2022-11-16 12:02:40,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1413 conditions, 1049 events. 148/1049 cut-off events. For 104/400 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 7571 event pairs, 48 based on Foata normal form. 0/869 useless extension candidates. Maximal degree in co-relation 1152. Up to 126 conditions per place. [2022-11-16 12:02:40,090 INFO L137 encePairwiseOnDemand]: 307/313 looper letters, 36 selfloop transitions, 4 changer transitions 0/295 dead transitions. [2022-11-16 12:02:40,090 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 295 transitions, 716 flow [2022-11-16 12:02:40,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:02:40,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 12:02:40,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1146 transitions. [2022-11-16 12:02:40,093 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9153354632587859 [2022-11-16 12:02:40,093 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1146 transitions. [2022-11-16 12:02:40,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1146 transitions. [2022-11-16 12:02:40,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:02:40,099 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1146 transitions. [2022-11-16 12:02:40,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 286.5) internal successors, (1146), 4 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:40,105 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 313.0) internal successors, (1565), 5 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:40,107 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 313.0) internal successors, (1565), 5 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:40,107 INFO L175 Difference]: Start difference. First operand has 279 places, 282 transitions, 603 flow. Second operand 4 states and 1146 transitions. [2022-11-16 12:02:40,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 295 transitions, 716 flow [2022-11-16 12:02:40,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 295 transitions, 707 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 12:02:40,114 INFO L231 Difference]: Finished difference. Result has 280 places, 283 transitions, 618 flow [2022-11-16 12:02:40,117 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=592, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=618, PETRI_PLACES=280, PETRI_TRANSITIONS=283} [2022-11-16 12:02:40,119 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 5 predicate places. [2022-11-16 12:02:40,119 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 283 transitions, 618 flow [2022-11-16 12:02:40,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:40,120 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:02:40,120 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:02:40,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 12:02:40,120 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 12:02:40,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:02:40,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1469136646, now seen corresponding path program 1 times [2022-11-16 12:02:40,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:02:40,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526531208] [2022-11-16 12:02:40,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:02:40,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:02:40,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:02:40,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:02:40,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:02:40,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526531208] [2022-11-16 12:02:40,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526531208] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:02:40,237 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:02:40,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:02:40,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616328458] [2022-11-16 12:02:40,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:02:40,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:02:40,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:02:40,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:02:40,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:02:40,240 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 313 [2022-11-16 12:02:40,241 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 283 transitions, 618 flow. Second operand has 4 states, 4 states have (on average 278.25) internal successors, (1113), 4 states have internal predecessors, (1113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:40,241 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:02:40,242 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 313 [2022-11-16 12:02:40,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:02:40,556 INFO L130 PetriNetUnfolder]: 95/1042 cut-off events. [2022-11-16 12:02:40,556 INFO L131 PetriNetUnfolder]: For 55/114 co-relation queries the response was YES. [2022-11-16 12:02:40,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1362 conditions, 1042 events. 95/1042 cut-off events. For 55/114 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 7140 event pairs, 24 based on Foata normal form. 5/915 useless extension candidates. Maximal degree in co-relation 1174. Up to 72 conditions per place. [2022-11-16 12:02:40,583 INFO L137 encePairwiseOnDemand]: 309/313 looper letters, 37 selfloop transitions, 3 changer transitions 0/295 dead transitions. [2022-11-16 12:02:40,583 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 295 transitions, 726 flow [2022-11-16 12:02:40,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:02:40,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 12:02:40,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1145 transitions. [2022-11-16 12:02:40,586 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9145367412140575 [2022-11-16 12:02:40,587 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1145 transitions. [2022-11-16 12:02:40,587 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1145 transitions. [2022-11-16 12:02:40,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:02:40,588 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1145 transitions. [2022-11-16 12:02:40,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 286.25) internal successors, (1145), 4 states have internal predecessors, (1145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:40,593 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 313.0) internal successors, (1565), 5 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:40,593 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 313.0) internal successors, (1565), 5 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:40,594 INFO L175 Difference]: Start difference. First operand has 280 places, 283 transitions, 618 flow. Second operand 4 states and 1145 transitions. [2022-11-16 12:02:40,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 295 transitions, 726 flow [2022-11-16 12:02:40,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 295 transitions, 724 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:02:40,600 INFO L231 Difference]: Finished difference. Result has 282 places, 282 transitions, 616 flow [2022-11-16 12:02:40,600 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=610, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=616, PETRI_PLACES=282, PETRI_TRANSITIONS=282} [2022-11-16 12:02:40,601 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 7 predicate places. [2022-11-16 12:02:40,601 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 282 transitions, 616 flow [2022-11-16 12:02:40,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 278.25) internal successors, (1113), 4 states have internal predecessors, (1113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:40,602 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:02:40,602 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] [2022-11-16 12:02:40,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 12:02:40,603 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 12:02:40,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:02:40,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1701403421, now seen corresponding path program 1 times [2022-11-16 12:02:40,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:02:40,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060098603] [2022-11-16 12:02:40,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:02:40,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:02:40,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:02:40,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:02:40,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:02:40,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060098603] [2022-11-16 12:02:40,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060098603] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:02:40,706 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:02:40,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:02:40,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018835067] [2022-11-16 12:02:40,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:02:40,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:02:40,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:02:40,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:02:40,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:02:40,710 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 313 [2022-11-16 12:02:40,713 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 282 transitions, 616 flow. Second operand has 6 states, 6 states have (on average 275.1666666666667) internal successors, (1651), 6 states have internal predecessors, (1651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:40,713 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:02:40,714 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 313 [2022-11-16 12:02:40,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:02:41,089 INFO L130 PetriNetUnfolder]: 139/978 cut-off events. [2022-11-16 12:02:41,089 INFO L131 PetriNetUnfolder]: For 38/130 co-relation queries the response was YES. [2022-11-16 12:02:41,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1428 conditions, 978 events. 139/978 cut-off events. For 38/130 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 6559 event pairs, 2 based on Foata normal form. 4/883 useless extension candidates. Maximal degree in co-relation 1352. Up to 217 conditions per place. [2022-11-16 12:02:41,115 INFO L137 encePairwiseOnDemand]: 307/313 looper letters, 31 selfloop transitions, 5 changer transitions 0/289 dead transitions. [2022-11-16 12:02:41,115 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 289 transitions, 710 flow [2022-11-16 12:02:41,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:02:41,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 12:02:41,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1675 transitions. [2022-11-16 12:02:41,119 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8919062832800851 [2022-11-16 12:02:41,119 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1675 transitions. [2022-11-16 12:02:41,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1675 transitions. [2022-11-16 12:02:41,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:02:41,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1675 transitions. [2022-11-16 12:02:41,124 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 279.1666666666667) internal successors, (1675), 6 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:41,128 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 313.0) internal successors, (2191), 7 states have internal predecessors, (2191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:41,129 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 313.0) internal successors, (2191), 7 states have internal predecessors, (2191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:41,129 INFO L175 Difference]: Start difference. First operand has 282 places, 282 transitions, 616 flow. Second operand 6 states and 1675 transitions. [2022-11-16 12:02:41,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 289 transitions, 710 flow [2022-11-16 12:02:41,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 289 transitions, 705 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 12:02:41,135 INFO L231 Difference]: Finished difference. Result has 284 places, 281 transitions, 619 flow [2022-11-16 12:02:41,136 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=609, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=619, PETRI_PLACES=284, PETRI_TRANSITIONS=281} [2022-11-16 12:02:41,137 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 9 predicate places. [2022-11-16 12:02:41,137 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 281 transitions, 619 flow [2022-11-16 12:02:41,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 275.1666666666667) internal successors, (1651), 6 states have internal predecessors, (1651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:41,138 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:02:41,138 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] [2022-11-16 12:02:41,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 12:02:41,139 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 12:02:41,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:02:41,139 INFO L85 PathProgramCache]: Analyzing trace with hash -622482424, now seen corresponding path program 1 times [2022-11-16 12:02:41,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:02:41,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179063446] [2022-11-16 12:02:41,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:02:41,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:02:41,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:02:41,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:02:41,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:02:41,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179063446] [2022-11-16 12:02:41,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179063446] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:02:41,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:02:41,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:02:41,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289279036] [2022-11-16 12:02:41,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:02:41,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:02:41,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:02:41,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:02:41,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:02:41,231 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 313 [2022-11-16 12:02:41,233 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 281 transitions, 619 flow. Second operand has 6 states, 6 states have (on average 275.1666666666667) internal successors, (1651), 6 states have internal predecessors, (1651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:41,233 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:02:41,233 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 313 [2022-11-16 12:02:41,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:02:41,699 INFO L130 PetriNetUnfolder]: 376/1679 cut-off events. [2022-11-16 12:02:41,699 INFO L131 PetriNetUnfolder]: For 274/391 co-relation queries the response was YES. [2022-11-16 12:02:41,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2395 conditions, 1679 events. 376/1679 cut-off events. For 274/391 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 14149 event pairs, 4 based on Foata normal form. 0/1366 useless extension candidates. Maximal degree in co-relation 1992. Up to 574 conditions per place. [2022-11-16 12:02:41,733 INFO L137 encePairwiseOnDemand]: 307/313 looper letters, 31 selfloop transitions, 5 changer transitions 0/286 dead transitions. [2022-11-16 12:02:41,733 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 286 transitions, 705 flow [2022-11-16 12:02:41,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:02:41,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 12:02:41,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1675 transitions. [2022-11-16 12:02:41,737 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8919062832800851 [2022-11-16 12:02:41,738 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1675 transitions. [2022-11-16 12:02:41,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1675 transitions. [2022-11-16 12:02:41,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:02:41,739 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1675 transitions. [2022-11-16 12:02:41,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 279.1666666666667) internal successors, (1675), 6 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:41,746 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 313.0) internal successors, (2191), 7 states have internal predecessors, (2191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:41,747 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 313.0) internal successors, (2191), 7 states have internal predecessors, (2191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:41,747 INFO L175 Difference]: Start difference. First operand has 284 places, 281 transitions, 619 flow. Second operand 6 states and 1675 transitions. [2022-11-16 12:02:41,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 286 transitions, 705 flow [2022-11-16 12:02:41,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 286 transitions, 696 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 12:02:41,752 INFO L231 Difference]: Finished difference. Result has 284 places, 280 transitions, 618 flow [2022-11-16 12:02:41,753 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=608, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=618, PETRI_PLACES=284, PETRI_TRANSITIONS=280} [2022-11-16 12:02:41,754 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 9 predicate places. [2022-11-16 12:02:41,754 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 280 transitions, 618 flow [2022-11-16 12:02:41,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 275.1666666666667) internal successors, (1651), 6 states have internal predecessors, (1651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:41,755 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:02:41,755 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] [2022-11-16 12:02:41,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 12:02:41,756 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 12:02:41,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:02:41,756 INFO L85 PathProgramCache]: Analyzing trace with hash -2085760922, now seen corresponding path program 1 times [2022-11-16 12:02:41,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:02:41,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581334780] [2022-11-16 12:02:41,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:02:41,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:02:41,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:02:41,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:02:41,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:02:41,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581334780] [2022-11-16 12:02:41,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581334780] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:02:41,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:02:41,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:02:41,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595518396] [2022-11-16 12:02:41,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:02:41,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:02:41,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:02:41,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:02:41,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:02:41,830 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 313 [2022-11-16 12:02:41,831 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 280 transitions, 618 flow. Second operand has 4 states, 4 states have (on average 278.5) internal successors, (1114), 4 states have internal predecessors, (1114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:41,832 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:02:41,832 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 313 [2022-11-16 12:02:41,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:02:42,154 INFO L130 PetriNetUnfolder]: 105/1178 cut-off events. [2022-11-16 12:02:42,155 INFO L131 PetriNetUnfolder]: For 30/106 co-relation queries the response was YES. [2022-11-16 12:02:42,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1572 conditions, 1178 events. 105/1178 cut-off events. For 30/106 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 8615 event pairs, 36 based on Foata normal form. 5/1047 useless extension candidates. Maximal degree in co-relation 1380. Up to 106 conditions per place. [2022-11-16 12:02:42,186 INFO L137 encePairwiseOnDemand]: 309/313 looper letters, 34 selfloop transitions, 3 changer transitions 0/292 dead transitions. [2022-11-16 12:02:42,186 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 292 transitions, 722 flow [2022-11-16 12:02:42,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:02:42,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 12:02:42,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1142 transitions. [2022-11-16 12:02:42,189 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9121405750798722 [2022-11-16 12:02:42,190 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1142 transitions. [2022-11-16 12:02:42,190 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1142 transitions. [2022-11-16 12:02:42,191 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:02:42,191 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1142 transitions. [2022-11-16 12:02:42,193 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 285.5) internal successors, (1142), 4 states have internal predecessors, (1142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:42,196 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 313.0) internal successors, (1565), 5 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:42,196 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 313.0) internal successors, (1565), 5 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:42,197 INFO L175 Difference]: Start difference. First operand has 284 places, 280 transitions, 618 flow. Second operand 4 states and 1142 transitions. [2022-11-16 12:02:42,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 292 transitions, 722 flow [2022-11-16 12:02:42,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 292 transitions, 711 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 12:02:42,203 INFO L231 Difference]: Finished difference. Result has 282 places, 280 transitions, 616 flow [2022-11-16 12:02:42,203 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=603, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=616, PETRI_PLACES=282, PETRI_TRANSITIONS=280} [2022-11-16 12:02:42,204 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 7 predicate places. [2022-11-16 12:02:42,204 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 280 transitions, 616 flow [2022-11-16 12:02:42,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 278.5) internal successors, (1114), 4 states have internal predecessors, (1114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:42,205 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:02:42,205 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] [2022-11-16 12:02:42,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 12:02:42,206 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 12:02:42,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:02:42,206 INFO L85 PathProgramCache]: Analyzing trace with hash -2117085024, now seen corresponding path program 1 times [2022-11-16 12:02:42,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:02:42,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535349788] [2022-11-16 12:02:42,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:02:42,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:02:42,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:02:42,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:02:42,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:02:42,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535349788] [2022-11-16 12:02:42,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535349788] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:02:42,282 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:02:42,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:02:42,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173864859] [2022-11-16 12:02:42,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:02:42,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:02:42,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:02:42,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:02:42,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:02:42,287 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 313 [2022-11-16 12:02:42,288 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 280 transitions, 616 flow. Second operand has 4 states, 4 states have (on average 278.25) internal successors, (1113), 4 states have internal predecessors, (1113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:42,288 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:02:42,288 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 313 [2022-11-16 12:02:42,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:02:42,920 INFO L130 PetriNetUnfolder]: 493/2445 cut-off events. [2022-11-16 12:02:42,920 INFO L131 PetriNetUnfolder]: For 469/735 co-relation queries the response was YES. [2022-11-16 12:02:42,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3484 conditions, 2445 events. 493/2445 cut-off events. For 469/735 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 24567 event pairs, 192 based on Foata normal form. 0/1885 useless extension candidates. Maximal degree in co-relation 3404. Up to 446 conditions per place. [2022-11-16 12:02:42,955 INFO L137 encePairwiseOnDemand]: 307/313 looper letters, 35 selfloop transitions, 4 changer transitions 0/292 dead transitions. [2022-11-16 12:02:42,956 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 292 transitions, 722 flow [2022-11-16 12:02:42,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:02:42,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 12:02:42,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1145 transitions. [2022-11-16 12:02:42,958 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9145367412140575 [2022-11-16 12:02:42,959 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1145 transitions. [2022-11-16 12:02:42,959 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1145 transitions. [2022-11-16 12:02:42,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:02:42,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1145 transitions. [2022-11-16 12:02:42,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 286.25) internal successors, (1145), 4 states have internal predecessors, (1145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:42,964 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 313.0) internal successors, (1565), 5 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:42,965 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 313.0) internal successors, (1565), 5 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:42,965 INFO L175 Difference]: Start difference. First operand has 282 places, 280 transitions, 616 flow. Second operand 4 states and 1145 transitions. [2022-11-16 12:02:42,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 292 transitions, 722 flow [2022-11-16 12:02:42,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 292 transitions, 720 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:02:42,971 INFO L231 Difference]: Finished difference. Result has 286 places, 281 transitions, 638 flow [2022-11-16 12:02:42,971 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=612, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=638, PETRI_PLACES=286, PETRI_TRANSITIONS=281} [2022-11-16 12:02:42,972 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 11 predicate places. [2022-11-16 12:02:42,972 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 281 transitions, 638 flow [2022-11-16 12:02:42,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 278.25) internal successors, (1113), 4 states have internal predecessors, (1113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:42,973 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:02:42,973 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] [2022-11-16 12:02:42,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 12:02:42,974 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 12:02:42,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:02:42,974 INFO L85 PathProgramCache]: Analyzing trace with hash -188765174, now seen corresponding path program 1 times [2022-11-16 12:02:42,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:02:42,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413695121] [2022-11-16 12:02:42,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:02:42,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:02:42,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:02:43,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:02:43,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:02:43,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413695121] [2022-11-16 12:02:43,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413695121] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:02:43,031 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:02:43,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:02:43,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727376628] [2022-11-16 12:02:43,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:02:43,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:02:43,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:02:43,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:02:43,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:02:43,033 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 313 [2022-11-16 12:02:43,034 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 281 transitions, 638 flow. Second operand has 4 states, 4 states have (on average 278.5) internal successors, (1114), 4 states have internal predecessors, (1114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:43,034 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:02:43,034 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 313 [2022-11-16 12:02:43,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:02:43,604 INFO L130 PetriNetUnfolder]: 167/1351 cut-off events. [2022-11-16 12:02:43,604 INFO L131 PetriNetUnfolder]: For 207/651 co-relation queries the response was YES. [2022-11-16 12:02:43,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1869 conditions, 1351 events. 167/1351 cut-off events. For 207/651 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 10870 event pairs, 60 based on Foata normal form. 6/1147 useless extension candidates. Maximal degree in co-relation 1690. Up to 148 conditions per place. [2022-11-16 12:02:43,668 INFO L137 encePairwiseOnDemand]: 309/313 looper letters, 36 selfloop transitions, 3 changer transitions 0/292 dead transitions. [2022-11-16 12:02:43,668 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 292 transitions, 741 flow [2022-11-16 12:02:43,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:02:43,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 12:02:43,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1144 transitions. [2022-11-16 12:02:43,672 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9137380191693291 [2022-11-16 12:02:43,672 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1144 transitions. [2022-11-16 12:02:43,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1144 transitions. [2022-11-16 12:02:43,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:02:43,673 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1144 transitions. [2022-11-16 12:02:43,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:43,678 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 313.0) internal successors, (1565), 5 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:43,679 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 313.0) internal successors, (1565), 5 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:43,679 INFO L175 Difference]: Start difference. First operand has 286 places, 281 transitions, 638 flow. Second operand 4 states and 1144 transitions. [2022-11-16 12:02:43,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 292 transitions, 741 flow [2022-11-16 12:02:43,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 292 transitions, 739 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:02:43,686 INFO L231 Difference]: Finished difference. Result has 288 places, 280 transitions, 636 flow [2022-11-16 12:02:43,687 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=630, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=636, PETRI_PLACES=288, PETRI_TRANSITIONS=280} [2022-11-16 12:02:43,688 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 13 predicate places. [2022-11-16 12:02:43,689 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 280 transitions, 636 flow [2022-11-16 12:02:43,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 278.5) internal successors, (1114), 4 states have internal predecessors, (1114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:43,689 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:02:43,690 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] [2022-11-16 12:02:43,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 12:02:43,690 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 12:02:43,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:02:43,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1556752217, now seen corresponding path program 1 times [2022-11-16 12:02:43,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:02:43,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195281937] [2022-11-16 12:02:43,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:02:43,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:02:43,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:02:43,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:02:43,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:02:43,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195281937] [2022-11-16 12:02:43,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195281937] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:02:43,793 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:02:43,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:02:43,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338455392] [2022-11-16 12:02:43,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:02:43,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:02:43,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:02:43,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:02:43,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:02:43,797 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 313 [2022-11-16 12:02:43,798 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 280 transitions, 636 flow. Second operand has 6 states, 6 states have (on average 275.3333333333333) internal successors, (1652), 6 states have internal predecessors, (1652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:43,799 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:02:43,799 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 313 [2022-11-16 12:02:43,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:02:44,442 INFO L130 PetriNetUnfolder]: 358/2349 cut-off events. [2022-11-16 12:02:44,443 INFO L131 PetriNetUnfolder]: For 273/345 co-relation queries the response was YES. [2022-11-16 12:02:44,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3260 conditions, 2349 events. 358/2349 cut-off events. For 273/345 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 21244 event pairs, 8 based on Foata normal form. 0/2010 useless extension candidates. Maximal degree in co-relation 2957. Up to 535 conditions per place. [2022-11-16 12:02:44,500 INFO L137 encePairwiseOnDemand]: 307/313 looper letters, 30 selfloop transitions, 5 changer transitions 0/286 dead transitions. [2022-11-16 12:02:44,500 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 286 transitions, 725 flow [2022-11-16 12:02:44,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:02:44,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 12:02:44,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1674 transitions. [2022-11-16 12:02:44,504 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8913738019169329 [2022-11-16 12:02:44,504 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1674 transitions. [2022-11-16 12:02:44,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1674 transitions. [2022-11-16 12:02:44,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:02:44,506 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1674 transitions. [2022-11-16 12:02:44,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 279.0) internal successors, (1674), 6 states have internal predecessors, (1674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:44,512 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 313.0) internal successors, (2191), 7 states have internal predecessors, (2191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:44,513 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 313.0) internal successors, (2191), 7 states have internal predecessors, (2191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:44,513 INFO L175 Difference]: Start difference. First operand has 288 places, 280 transitions, 636 flow. Second operand 6 states and 1674 transitions. [2022-11-16 12:02:44,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 286 transitions, 725 flow [2022-11-16 12:02:44,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 286 transitions, 720 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 12:02:44,519 INFO L231 Difference]: Finished difference. Result has 290 places, 279 transitions, 639 flow [2022-11-16 12:02:44,520 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=629, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=639, PETRI_PLACES=290, PETRI_TRANSITIONS=279} [2022-11-16 12:02:44,520 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 15 predicate places. [2022-11-16 12:02:44,520 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 279 transitions, 639 flow [2022-11-16 12:02:44,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 275.3333333333333) internal successors, (1652), 6 states have internal predecessors, (1652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:44,521 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:02:44,521 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] [2022-11-16 12:02:44,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 12:02:44,522 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 12:02:44,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:02:44,522 INFO L85 PathProgramCache]: Analyzing trace with hash -20625656, now seen corresponding path program 1 times [2022-11-16 12:02:44,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:02:44,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615707042] [2022-11-16 12:02:44,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:02:44,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:02:44,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:02:44,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:02:44,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:02:44,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615707042] [2022-11-16 12:02:44,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615707042] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:02:44,647 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:02:44,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:02:44,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338872069] [2022-11-16 12:02:44,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:02:44,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:02:44,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:02:44,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:02:44,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:02:44,651 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 313 [2022-11-16 12:02:44,653 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 279 transitions, 639 flow. Second operand has 8 states, 8 states have (on average 270.0) internal successors, (2160), 8 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:44,653 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:02:44,653 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 313 [2022-11-16 12:02:44,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:02:45,065 INFO L130 PetriNetUnfolder]: 136/1019 cut-off events. [2022-11-16 12:02:45,065 INFO L131 PetriNetUnfolder]: For 56/504 co-relation queries the response was YES. [2022-11-16 12:02:45,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1550 conditions, 1019 events. 136/1019 cut-off events. For 56/504 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 7124 event pairs, 4 based on Foata normal form. 8/944 useless extension candidates. Maximal degree in co-relation 1483. Up to 162 conditions per place. [2022-11-16 12:02:45,103 INFO L137 encePairwiseOnDemand]: 303/313 looper letters, 40 selfloop transitions, 9 changer transitions 0/295 dead transitions. [2022-11-16 12:02:45,103 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 295 transitions, 783 flow [2022-11-16 12:02:45,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:02:45,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 12:02:45,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2194 transitions. [2022-11-16 12:02:45,109 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8761980830670927 [2022-11-16 12:02:45,109 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2194 transitions. [2022-11-16 12:02:45,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2194 transitions. [2022-11-16 12:02:45,111 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:02:45,111 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2194 transitions. [2022-11-16 12:02:45,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 274.25) internal successors, (2194), 8 states have internal predecessors, (2194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:45,120 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 313.0) internal successors, (2817), 9 states have internal predecessors, (2817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:45,121 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 313.0) internal successors, (2817), 9 states have internal predecessors, (2817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:45,121 INFO L175 Difference]: Start difference. First operand has 290 places, 279 transitions, 639 flow. Second operand 8 states and 2194 transitions. [2022-11-16 12:02:45,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 295 transitions, 783 flow [2022-11-16 12:02:45,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 295 transitions, 774 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 12:02:45,128 INFO L231 Difference]: Finished difference. Result has 295 places, 280 transitions, 660 flow [2022-11-16 12:02:45,129 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=630, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=660, PETRI_PLACES=295, PETRI_TRANSITIONS=280} [2022-11-16 12:02:45,129 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 20 predicate places. [2022-11-16 12:02:45,130 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 280 transitions, 660 flow [2022-11-16 12:02:45,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 270.0) internal successors, (2160), 8 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:45,131 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:02:45,131 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] [2022-11-16 12:02:45,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 12:02:45,131 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 12:02:45,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:02:45,132 INFO L85 PathProgramCache]: Analyzing trace with hash -639394515, now seen corresponding path program 1 times [2022-11-16 12:02:45,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:02:45,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386219715] [2022-11-16 12:02:45,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:02:45,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:02:45,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:02:45,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:02:45,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:02:45,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386219715] [2022-11-16 12:02:45,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386219715] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:02:45,270 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:02:45,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:02:45,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799411949] [2022-11-16 12:02:45,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:02:45,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:02:45,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:02:45,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:02:45,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:02:45,280 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 313 [2022-11-16 12:02:45,282 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 280 transitions, 660 flow. Second operand has 8 states, 8 states have (on average 270.125) internal successors, (2161), 8 states have internal predecessors, (2161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:45,282 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:02:45,283 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 313 [2022-11-16 12:02:45,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:02:45,734 INFO L130 PetriNetUnfolder]: 118/993 cut-off events. [2022-11-16 12:02:45,734 INFO L131 PetriNetUnfolder]: For 94/470 co-relation queries the response was YES. [2022-11-16 12:02:45,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1521 conditions, 993 events. 118/993 cut-off events. For 94/470 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 6838 event pairs, 4 based on Foata normal form. 8/930 useless extension candidates. Maximal degree in co-relation 1452. Up to 148 conditions per place. [2022-11-16 12:02:45,766 INFO L137 encePairwiseOnDemand]: 303/313 looper letters, 43 selfloop transitions, 9 changer transitions 0/298 dead transitions. [2022-11-16 12:02:45,766 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 298 transitions, 821 flow [2022-11-16 12:02:45,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:02:45,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 12:02:45,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2196 transitions. [2022-11-16 12:02:45,771 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8769968051118211 [2022-11-16 12:02:45,771 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2196 transitions. [2022-11-16 12:02:45,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2196 transitions. [2022-11-16 12:02:45,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:02:45,773 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2196 transitions. [2022-11-16 12:02:45,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 274.5) internal successors, (2196), 8 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:45,781 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 313.0) internal successors, (2817), 9 states have internal predecessors, (2817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:45,782 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 313.0) internal successors, (2817), 9 states have internal predecessors, (2817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:45,782 INFO L175 Difference]: Start difference. First operand has 295 places, 280 transitions, 660 flow. Second operand 8 states and 2196 transitions. [2022-11-16 12:02:45,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 298 transitions, 821 flow [2022-11-16 12:02:45,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 298 transitions, 812 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 12:02:45,789 INFO L231 Difference]: Finished difference. Result has 300 places, 281 transitions, 681 flow [2022-11-16 12:02:45,790 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=651, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=681, PETRI_PLACES=300, PETRI_TRANSITIONS=281} [2022-11-16 12:02:45,791 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 25 predicate places. [2022-11-16 12:02:45,791 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 281 transitions, 681 flow [2022-11-16 12:02:45,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 270.125) internal successors, (2161), 8 states have internal predecessors, (2161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:45,792 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:02:45,793 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] [2022-11-16 12:02:45,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 12:02:45,793 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 12:02:45,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:02:45,793 INFO L85 PathProgramCache]: Analyzing trace with hash -514905046, now seen corresponding path program 1 times [2022-11-16 12:02:45,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:02:45,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311034838] [2022-11-16 12:02:45,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:02:45,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:02:45,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:02:45,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:02:45,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:02:45,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311034838] [2022-11-16 12:02:45,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311034838] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:02:45,888 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:02:45,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:02:45,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622557071] [2022-11-16 12:02:45,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:02:45,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:02:45,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:02:45,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:02:45,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:02:45,892 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 313 [2022-11-16 12:02:45,893 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 281 transitions, 681 flow. Second operand has 4 states, 4 states have (on average 278.75) internal successors, (1115), 4 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:45,893 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:02:45,894 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 313 [2022-11-16 12:02:45,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:02:46,504 INFO L130 PetriNetUnfolder]: 201/1555 cut-off events. [2022-11-16 12:02:46,504 INFO L131 PetriNetUnfolder]: For 197/761 co-relation queries the response was YES. [2022-11-16 12:02:46,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2206 conditions, 1555 events. 201/1555 cut-off events. For 197/761 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 13091 event pairs, 90 based on Foata normal form. 6/1321 useless extension candidates. Maximal degree in co-relation 2023. Up to 218 conditions per place. [2022-11-16 12:02:46,571 INFO L137 encePairwiseOnDemand]: 309/313 looper letters, 33 selfloop transitions, 3 changer transitions 0/292 dead transitions. [2022-11-16 12:02:46,571 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 292 transitions, 780 flow [2022-11-16 12:02:46,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:02:46,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 12:02:46,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1141 transitions. [2022-11-16 12:02:46,574 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9113418530351438 [2022-11-16 12:02:46,574 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1141 transitions. [2022-11-16 12:02:46,574 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1141 transitions. [2022-11-16 12:02:46,575 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:02:46,575 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1141 transitions. [2022-11-16 12:02:46,577 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 285.25) internal successors, (1141), 4 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:46,579 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 313.0) internal successors, (1565), 5 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:46,580 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 313.0) internal successors, (1565), 5 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:46,580 INFO L175 Difference]: Start difference. First operand has 300 places, 281 transitions, 681 flow. Second operand 4 states and 1141 transitions. [2022-11-16 12:02:46,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 292 transitions, 780 flow [2022-11-16 12:02:46,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 292 transitions, 769 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 12:02:46,586 INFO L231 Difference]: Finished difference. Result has 298 places, 281 transitions, 679 flow [2022-11-16 12:02:46,586 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=666, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=679, PETRI_PLACES=298, PETRI_TRANSITIONS=281} [2022-11-16 12:02:46,587 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 23 predicate places. [2022-11-16 12:02:46,587 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 281 transitions, 679 flow [2022-11-16 12:02:46,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 278.75) internal successors, (1115), 4 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:46,587 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:02:46,588 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] [2022-11-16 12:02:46,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 12:02:46,588 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 12:02:46,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:02:46,588 INFO L85 PathProgramCache]: Analyzing trace with hash -504831855, now seen corresponding path program 1 times [2022-11-16 12:02:46,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:02:46,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771727299] [2022-11-16 12:02:46,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:02:46,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:02:46,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:02:46,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:02:46,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:02:46,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771727299] [2022-11-16 12:02:46,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771727299] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:02:46,717 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:02:46,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:02:46,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108033622] [2022-11-16 12:02:46,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:02:46,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:02:46,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:02:46,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:02:46,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:02:46,720 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 313 [2022-11-16 12:02:46,721 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 281 transitions, 679 flow. Second operand has 6 states, 6 states have (on average 269.3333333333333) internal successors, (1616), 6 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:46,721 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:02:46,721 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 313 [2022-11-16 12:02:46,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:02:47,158 INFO L130 PetriNetUnfolder]: 127/1134 cut-off events. [2022-11-16 12:02:47,158 INFO L131 PetriNetUnfolder]: For 94/100 co-relation queries the response was YES. [2022-11-16 12:02:47,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1793 conditions, 1134 events. 127/1134 cut-off events. For 94/100 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 8283 event pairs, 58 based on Foata normal form. 3/1045 useless extension candidates. Maximal degree in co-relation 1665. Up to 154 conditions per place. [2022-11-16 12:02:47,198 INFO L137 encePairwiseOnDemand]: 305/313 looper letters, 46 selfloop transitions, 7 changer transitions 0/297 dead transitions. [2022-11-16 12:02:47,198 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 297 transitions, 832 flow [2022-11-16 12:02:47,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:02:47,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:02:47,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1915 transitions. [2022-11-16 12:02:47,203 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8740301232314012 [2022-11-16 12:02:47,203 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1915 transitions. [2022-11-16 12:02:47,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1915 transitions. [2022-11-16 12:02:47,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:02:47,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1915 transitions. [2022-11-16 12:02:47,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 273.57142857142856) internal successors, (1915), 7 states have internal predecessors, (1915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:47,211 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 313.0) internal successors, (2504), 8 states have internal predecessors, (2504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:47,212 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 313.0) internal successors, (2504), 8 states have internal predecessors, (2504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:47,212 INFO L175 Difference]: Start difference. First operand has 298 places, 281 transitions, 679 flow. Second operand 7 states and 1915 transitions. [2022-11-16 12:02:47,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 297 transitions, 832 flow [2022-11-16 12:02:47,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 297 transitions, 828 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 12:02:47,218 INFO L231 Difference]: Finished difference. Result has 305 places, 284 transitions, 711 flow [2022-11-16 12:02:47,219 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=671, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=711, PETRI_PLACES=305, PETRI_TRANSITIONS=284} [2022-11-16 12:02:47,220 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 30 predicate places. [2022-11-16 12:02:47,220 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 284 transitions, 711 flow [2022-11-16 12:02:47,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 269.3333333333333) internal successors, (1616), 6 states have internal predecessors, (1616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:47,221 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:02:47,221 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] [2022-11-16 12:02:47,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-16 12:02:47,221 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 12:02:47,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:02:47,221 INFO L85 PathProgramCache]: Analyzing trace with hash -2037854579, now seen corresponding path program 1 times [2022-11-16 12:02:47,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:02:47,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162794006] [2022-11-16 12:02:47,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:02:47,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:02:47,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:02:47,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:02:47,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:02:47,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162794006] [2022-11-16 12:02:47,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162794006] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:02:47,381 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:02:47,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:02:47,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840951609] [2022-11-16 12:02:47,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:02:47,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:02:47,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:02:47,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:02:47,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:02:47,384 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 313 [2022-11-16 12:02:47,386 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 284 transitions, 711 flow. Second operand has 6 states, 6 states have (on average 269.5) internal successors, (1617), 6 states have internal predecessors, (1617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:47,386 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:02:47,386 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 313 [2022-11-16 12:02:47,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:02:47,827 INFO L130 PetriNetUnfolder]: 119/1123 cut-off events. [2022-11-16 12:02:47,827 INFO L131 PetriNetUnfolder]: For 120/126 co-relation queries the response was YES. [2022-11-16 12:02:47,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1832 conditions, 1123 events. 119/1123 cut-off events. For 120/126 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 8114 event pairs, 48 based on Foata normal form. 3/1048 useless extension candidates. Maximal degree in co-relation 1702. Up to 129 conditions per place. [2022-11-16 12:02:47,867 INFO L137 encePairwiseOnDemand]: 305/313 looper letters, 55 selfloop transitions, 8 changer transitions 0/307 dead transitions. [2022-11-16 12:02:47,867 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 307 transitions, 920 flow [2022-11-16 12:02:47,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:02:47,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:02:47,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1921 transitions. [2022-11-16 12:02:47,872 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8767685988133272 [2022-11-16 12:02:47,872 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1921 transitions. [2022-11-16 12:02:47,872 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1921 transitions. [2022-11-16 12:02:47,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:02:47,874 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1921 transitions. [2022-11-16 12:02:47,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 274.42857142857144) internal successors, (1921), 7 states have internal predecessors, (1921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:47,882 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 313.0) internal successors, (2504), 8 states have internal predecessors, (2504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:47,882 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 313.0) internal successors, (2504), 8 states have internal predecessors, (2504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:47,884 INFO L175 Difference]: Start difference. First operand has 305 places, 284 transitions, 711 flow. Second operand 7 states and 1921 transitions. [2022-11-16 12:02:47,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 307 transitions, 920 flow [2022-11-16 12:02:47,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 307 transitions, 918 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:02:47,891 INFO L231 Difference]: Finished difference. Result has 313 places, 288 transitions, 758 flow [2022-11-16 12:02:47,892 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=705, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=758, PETRI_PLACES=313, PETRI_TRANSITIONS=288} [2022-11-16 12:02:47,892 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 38 predicate places. [2022-11-16 12:02:47,893 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 288 transitions, 758 flow [2022-11-16 12:02:47,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 269.5) internal successors, (1617), 6 states have internal predecessors, (1617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:47,894 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:02:47,894 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] [2022-11-16 12:02:47,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-16 12:02:47,894 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 12:02:47,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:02:47,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1068917241, now seen corresponding path program 1 times [2022-11-16 12:02:47,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:02:47,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185682126] [2022-11-16 12:02:47,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:02:47,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:02:47,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:02:47,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:02:47,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:02:47,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185682126] [2022-11-16 12:02:47,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185682126] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:02:47,974 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:02:47,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:02:47,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401244538] [2022-11-16 12:02:47,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:02:47,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:02:47,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:02:47,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:02:47,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:02:47,977 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 313 [2022-11-16 12:02:47,978 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 288 transitions, 758 flow. Second operand has 4 states, 4 states have (on average 278.75) internal successors, (1115), 4 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:47,978 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:02:47,978 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 313 [2022-11-16 12:02:47,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:02:48,903 INFO L130 PetriNetUnfolder]: 590/2942 cut-off events. [2022-11-16 12:02:48,903 INFO L131 PetriNetUnfolder]: For 828/1226 co-relation queries the response was YES. [2022-11-16 12:02:48,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4478 conditions, 2942 events. 590/2942 cut-off events. For 828/1226 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 31994 event pairs, 240 based on Foata normal form. 21/2291 useless extension candidates. Maximal degree in co-relation 4386. Up to 516 conditions per place. [2022-11-16 12:02:48,961 INFO L137 encePairwiseOnDemand]: 309/313 looper letters, 35 selfloop transitions, 3 changer transitions 0/298 dead transitions. [2022-11-16 12:02:48,962 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 298 transitions, 854 flow [2022-11-16 12:02:48,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:02:48,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 12:02:48,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1143 transitions. [2022-11-16 12:02:48,965 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9129392971246006 [2022-11-16 12:02:48,965 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1143 transitions. [2022-11-16 12:02:48,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1143 transitions. [2022-11-16 12:02:48,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:02:48,966 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1143 transitions. [2022-11-16 12:02:48,969 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 285.75) internal successors, (1143), 4 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:48,971 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 313.0) internal successors, (1565), 5 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:48,971 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 313.0) internal successors, (1565), 5 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:48,972 INFO L175 Difference]: Start difference. First operand has 313 places, 288 transitions, 758 flow. Second operand 4 states and 1143 transitions. [2022-11-16 12:02:48,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 298 transitions, 854 flow [2022-11-16 12:02:48,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 298 transitions, 852 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:02:48,979 INFO L231 Difference]: Finished difference. Result has 315 places, 287 transitions, 756 flow [2022-11-16 12:02:48,980 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=750, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=756, PETRI_PLACES=315, PETRI_TRANSITIONS=287} [2022-11-16 12:02:48,980 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 40 predicate places. [2022-11-16 12:02:48,981 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 287 transitions, 756 flow [2022-11-16 12:02:48,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 278.75) internal successors, (1115), 4 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:48,981 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:02:48,981 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:02:48,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-16 12:02:48,982 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 12:02:48,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:02:48,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1322454324, now seen corresponding path program 1 times [2022-11-16 12:02:48,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:02:48,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037796697] [2022-11-16 12:02:48,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:02:48,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:02:48,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:02:49,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:02:49,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:02:49,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037796697] [2022-11-16 12:02:49,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037796697] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:02:49,111 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:02:49,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:02:49,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030526442] [2022-11-16 12:02:49,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:02:49,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:02:49,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:02:49,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:02:49,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:02:49,114 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 313 [2022-11-16 12:02:49,116 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 287 transitions, 756 flow. Second operand has 8 states, 8 states have (on average 270.125) internal successors, (2161), 8 states have internal predecessors, (2161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:49,116 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:02:49,117 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 313 [2022-11-16 12:02:49,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:02:49,772 INFO L130 PetriNetUnfolder]: 300/1869 cut-off events. [2022-11-16 12:02:49,772 INFO L131 PetriNetUnfolder]: For 290/290 co-relation queries the response was YES. [2022-11-16 12:02:49,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3079 conditions, 1869 events. 300/1869 cut-off events. For 290/290 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 15876 event pairs, 2 based on Foata normal form. 0/1678 useless extension candidates. Maximal degree in co-relation 3004. Up to 300 conditions per place. [2022-11-16 12:02:49,835 INFO L137 encePairwiseOnDemand]: 303/313 looper letters, 39 selfloop transitions, 9 changer transitions 0/302 dead transitions. [2022-11-16 12:02:49,836 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 302 transitions, 895 flow [2022-11-16 12:02:49,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:02:49,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 12:02:49,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2193 transitions. [2022-11-16 12:02:49,841 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8757987220447284 [2022-11-16 12:02:49,841 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2193 transitions. [2022-11-16 12:02:49,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2193 transitions. [2022-11-16 12:02:49,842 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:02:49,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2193 transitions. [2022-11-16 12:02:49,847 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 274.125) internal successors, (2193), 8 states have internal predecessors, (2193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:49,851 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 313.0) internal successors, (2817), 9 states have internal predecessors, (2817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:49,852 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 313.0) internal successors, (2817), 9 states have internal predecessors, (2817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:49,853 INFO L175 Difference]: Start difference. First operand has 315 places, 287 transitions, 756 flow. Second operand 8 states and 2193 transitions. [2022-11-16 12:02:49,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 302 transitions, 895 flow [2022-11-16 12:02:49,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 302 transitions, 890 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 12:02:49,861 INFO L231 Difference]: Finished difference. Result has 322 places, 288 transitions, 781 flow [2022-11-16 12:02:49,861 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=751, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=781, PETRI_PLACES=322, PETRI_TRANSITIONS=288} [2022-11-16 12:02:49,862 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 47 predicate places. [2022-11-16 12:02:49,862 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 288 transitions, 781 flow [2022-11-16 12:02:49,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 270.125) internal successors, (2161), 8 states have internal predecessors, (2161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:49,863 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:02:49,863 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:02:49,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-16 12:02:49,863 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 12:02:49,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:02:49,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1223304850, now seen corresponding path program 1 times [2022-11-16 12:02:49,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:02:49,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664127541] [2022-11-16 12:02:49,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:02:49,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:02:49,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:02:49,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:02:49,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:02:49,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664127541] [2022-11-16 12:02:49,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664127541] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:02:49,968 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:02:49,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:02:49,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683882621] [2022-11-16 12:02:49,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:02:49,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:02:49,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:02:49,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:02:49,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:02:49,972 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 313 [2022-11-16 12:02:49,974 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 288 transitions, 781 flow. Second operand has 6 states, 6 states have (on average 275.5) internal successors, (1653), 6 states have internal predecessors, (1653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:49,974 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:02:49,974 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 313 [2022-11-16 12:02:49,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:02:50,994 INFO L130 PetriNetUnfolder]: 681/3532 cut-off events. [2022-11-16 12:02:50,995 INFO L131 PetriNetUnfolder]: For 780/988 co-relation queries the response was YES. [2022-11-16 12:02:51,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5337 conditions, 3532 events. 681/3532 cut-off events. For 780/988 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 36247 event pairs, 5 based on Foata normal form. 0/2935 useless extension candidates. Maximal degree in co-relation 4106. Up to 1126 conditions per place. [2022-11-16 12:02:51,044 INFO L137 encePairwiseOnDemand]: 307/313 looper letters, 29 selfloop transitions, 5 changer transitions 0/293 dead transitions. [2022-11-16 12:02:51,044 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 293 transitions, 867 flow [2022-11-16 12:02:51,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:02:51,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 12:02:51,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1673 transitions. [2022-11-16 12:02:51,048 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8908413205537806 [2022-11-16 12:02:51,049 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1673 transitions. [2022-11-16 12:02:51,049 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1673 transitions. [2022-11-16 12:02:51,050 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:02:51,050 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1673 transitions. [2022-11-16 12:02:51,053 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 278.8333333333333) internal successors, (1673), 6 states have internal predecessors, (1673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:51,057 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 313.0) internal successors, (2191), 7 states have internal predecessors, (2191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:51,058 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 313.0) internal successors, (2191), 7 states have internal predecessors, (2191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:51,058 INFO L175 Difference]: Start difference. First operand has 322 places, 288 transitions, 781 flow. Second operand 6 states and 1673 transitions. [2022-11-16 12:02:51,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 293 transitions, 867 flow [2022-11-16 12:02:51,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 293 transitions, 854 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 12:02:51,065 INFO L231 Difference]: Finished difference. Result has 322 places, 287 transitions, 780 flow [2022-11-16 12:02:51,065 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=770, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=780, PETRI_PLACES=322, PETRI_TRANSITIONS=287} [2022-11-16 12:02:51,066 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 47 predicate places. [2022-11-16 12:02:51,066 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 287 transitions, 780 flow [2022-11-16 12:02:51,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 275.5) internal successors, (1653), 6 states have internal predecessors, (1653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:51,067 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:02:51,067 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] [2022-11-16 12:02:51,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-16 12:02:51,068 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 12:02:51,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:02:51,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1953589809, now seen corresponding path program 1 times [2022-11-16 12:02:51,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:02:51,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233604030] [2022-11-16 12:02:51,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:02:51,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:02:51,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:02:51,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:02:51,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:02:51,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233604030] [2022-11-16 12:02:51,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233604030] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:02:51,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:02:51,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:02:51,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126821607] [2022-11-16 12:02:51,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:02:51,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:02:51,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:02:51,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:02:51,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:02:51,202 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 313 [2022-11-16 12:02:51,204 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 287 transitions, 780 flow. Second operand has 8 states, 8 states have (on average 270.25) internal successors, (2162), 8 states have internal predecessors, (2162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:51,204 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:02:51,204 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 313 [2022-11-16 12:02:51,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:02:51,899 INFO L130 PetriNetUnfolder]: 252/1804 cut-off events. [2022-11-16 12:02:51,899 INFO L131 PetriNetUnfolder]: For 321/321 co-relation queries the response was YES. [2022-11-16 12:02:51,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3003 conditions, 1804 events. 252/1804 cut-off events. For 321/321 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 14951 event pairs, 2 based on Foata normal form. 0/1656 useless extension candidates. Maximal degree in co-relation 2928. Up to 268 conditions per place. [2022-11-16 12:02:51,953 INFO L137 encePairwiseOnDemand]: 303/313 looper letters, 42 selfloop transitions, 9 changer transitions 0/304 dead transitions. [2022-11-16 12:02:51,953 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 304 transitions, 936 flow [2022-11-16 12:02:51,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:02:51,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 12:02:51,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2195 transitions. [2022-11-16 12:02:51,957 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8765974440894568 [2022-11-16 12:02:51,957 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2195 transitions. [2022-11-16 12:02:51,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2195 transitions. [2022-11-16 12:02:51,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:02:51,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2195 transitions. [2022-11-16 12:02:51,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 274.375) internal successors, (2195), 8 states have internal predecessors, (2195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:51,966 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 313.0) internal successors, (2817), 9 states have internal predecessors, (2817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:51,967 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 313.0) internal successors, (2817), 9 states have internal predecessors, (2817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:51,967 INFO L175 Difference]: Start difference. First operand has 322 places, 287 transitions, 780 flow. Second operand 8 states and 2195 transitions. [2022-11-16 12:02:51,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 304 transitions, 936 flow [2022-11-16 12:02:51,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 304 transitions, 927 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 12:02:51,975 INFO L231 Difference]: Finished difference. Result has 327 places, 288 transitions, 801 flow [2022-11-16 12:02:51,976 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=771, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=801, PETRI_PLACES=327, PETRI_TRANSITIONS=288} [2022-11-16 12:02:51,976 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 52 predicate places. [2022-11-16 12:02:51,976 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 288 transitions, 801 flow [2022-11-16 12:02:51,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 270.25) internal successors, (2162), 8 states have internal predecessors, (2162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:51,977 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:02:51,978 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] [2022-11-16 12:02:51,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-16 12:02:51,978 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 12:02:51,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:02:51,978 INFO L85 PathProgramCache]: Analyzing trace with hash -349719467, now seen corresponding path program 1 times [2022-11-16 12:02:51,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:02:51,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870796287] [2022-11-16 12:02:51,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:02:51,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:02:51,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:02:52,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:02:52,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:02:52,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870796287] [2022-11-16 12:02:52,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870796287] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:02:52,046 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:02:52,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:02:52,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897879500] [2022-11-16 12:02:52,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:02:52,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:02:52,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:02:52,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:02:52,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:02:52,049 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 313 [2022-11-16 12:02:52,050 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 288 transitions, 801 flow. Second operand has 4 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:52,051 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:02:52,051 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 313 [2022-11-16 12:02:52,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:02:52,939 INFO L130 PetriNetUnfolder]: 729/3644 cut-off events. [2022-11-16 12:02:52,939 INFO L131 PetriNetUnfolder]: For 807/1281 co-relation queries the response was YES. [2022-11-16 12:02:52,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5518 conditions, 3644 events. 729/3644 cut-off events. For 807/1281 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 41572 event pairs, 360 based on Foata normal form. 21/2837 useless extension candidates. Maximal degree in co-relation 5419. Up to 762 conditions per place. [2022-11-16 12:02:53,001 INFO L137 encePairwiseOnDemand]: 309/313 looper letters, 32 selfloop transitions, 3 changer transitions 0/298 dead transitions. [2022-11-16 12:02:53,001 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 298 transitions, 893 flow [2022-11-16 12:02:53,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:02:53,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 12:02:53,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1140 transitions. [2022-11-16 12:02:53,005 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9105431309904153 [2022-11-16 12:02:53,005 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1140 transitions. [2022-11-16 12:02:53,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1140 transitions. [2022-11-16 12:02:53,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:02:53,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1140 transitions. [2022-11-16 12:02:53,009 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:53,012 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 313.0) internal successors, (1565), 5 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:53,013 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 313.0) internal successors, (1565), 5 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:53,013 INFO L175 Difference]: Start difference. First operand has 327 places, 288 transitions, 801 flow. Second operand 4 states and 1140 transitions. [2022-11-16 12:02:53,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 298 transitions, 893 flow [2022-11-16 12:02:53,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 298 transitions, 882 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 12:02:53,021 INFO L231 Difference]: Finished difference. Result has 325 places, 288 transitions, 799 flow [2022-11-16 12:02:53,022 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=786, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=799, PETRI_PLACES=325, PETRI_TRANSITIONS=288} [2022-11-16 12:02:53,022 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 50 predicate places. [2022-11-16 12:02:53,023 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 288 transitions, 799 flow [2022-11-16 12:02:53,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:53,024 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:02:53,024 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:02:53,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-16 12:02:53,024 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 12:02:53,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:02:53,025 INFO L85 PathProgramCache]: Analyzing trace with hash 272074133, now seen corresponding path program 1 times [2022-11-16 12:02:53,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:02:53,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309954066] [2022-11-16 12:02:53,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:02:53,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:02:53,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:02:53,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:02:53,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:02:53,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309954066] [2022-11-16 12:02:53,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309954066] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:02:53,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:02:53,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:02:53,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253996010] [2022-11-16 12:02:53,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:02:53,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:02:53,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:02:53,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:02:53,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:02:53,159 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 313 [2022-11-16 12:02:53,161 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 288 transitions, 799 flow. Second operand has 6 states, 6 states have (on average 269.5) internal successors, (1617), 6 states have internal predecessors, (1617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:53,162 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:02:53,162 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 313 [2022-11-16 12:02:53,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:02:53,960 INFO L130 PetriNetUnfolder]: 282/1538 cut-off events. [2022-11-16 12:02:53,961 INFO L131 PetriNetUnfolder]: For 398/899 co-relation queries the response was YES. [2022-11-16 12:02:53,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2664 conditions, 1538 events. 282/1538 cut-off events. For 398/899 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 13665 event pairs, 145 based on Foata normal form. 6/1326 useless extension candidates. Maximal degree in co-relation 2470. Up to 331 conditions per place. [2022-11-16 12:02:54,001 INFO L137 encePairwiseOnDemand]: 305/313 looper letters, 45 selfloop transitions, 7 changer transitions 0/303 dead transitions. [2022-11-16 12:02:54,001 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 303 transitions, 947 flow [2022-11-16 12:02:54,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:02:54,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:02:54,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1914 transitions. [2022-11-16 12:02:54,005 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8735737106344135 [2022-11-16 12:02:54,005 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1914 transitions. [2022-11-16 12:02:54,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1914 transitions. [2022-11-16 12:02:54,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:02:54,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1914 transitions. [2022-11-16 12:02:54,009 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 273.42857142857144) internal successors, (1914), 7 states have internal predecessors, (1914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:54,012 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 313.0) internal successors, (2504), 8 states have internal predecessors, (2504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:54,013 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 313.0) internal successors, (2504), 8 states have internal predecessors, (2504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:54,014 INFO L175 Difference]: Start difference. First operand has 325 places, 288 transitions, 799 flow. Second operand 7 states and 1914 transitions. [2022-11-16 12:02:54,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 303 transitions, 947 flow [2022-11-16 12:02:54,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 303 transitions, 943 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 12:02:54,021 INFO L231 Difference]: Finished difference. Result has 332 places, 291 transitions, 831 flow [2022-11-16 12:02:54,021 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=791, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=831, PETRI_PLACES=332, PETRI_TRANSITIONS=291} [2022-11-16 12:02:54,022 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 57 predicate places. [2022-11-16 12:02:54,022 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 291 transitions, 831 flow [2022-11-16 12:02:54,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 269.5) internal successors, (1617), 6 states have internal predecessors, (1617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:54,023 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:02:54,023 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:02:54,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-16 12:02:54,024 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 12:02:54,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:02:54,024 INFO L85 PathProgramCache]: Analyzing trace with hash 571394641, now seen corresponding path program 1 times [2022-11-16 12:02:54,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:02:54,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664104267] [2022-11-16 12:02:54,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:02:54,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:02:54,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:02:54,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:02:54,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:02:54,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664104267] [2022-11-16 12:02:54,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664104267] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:02:54,138 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:02:54,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:02:54,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382006472] [2022-11-16 12:02:54,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:02:54,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:02:54,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:02:54,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:02:54,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:02:54,141 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 313 [2022-11-16 12:02:54,142 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 291 transitions, 831 flow. Second operand has 6 states, 6 states have (on average 269.6666666666667) internal successors, (1618), 6 states have internal predecessors, (1618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:54,143 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:02:54,143 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 313 [2022-11-16 12:02:54,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:02:54,913 INFO L130 PetriNetUnfolder]: 262/1512 cut-off events. [2022-11-16 12:02:54,913 INFO L131 PetriNetUnfolder]: For 438/903 co-relation queries the response was YES. [2022-11-16 12:02:54,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2752 conditions, 1512 events. 262/1512 cut-off events. For 438/903 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 13337 event pairs, 120 based on Foata normal form. 6/1342 useless extension candidates. Maximal degree in co-relation 2558. Up to 276 conditions per place. [2022-11-16 12:02:55,001 INFO L137 encePairwiseOnDemand]: 305/313 looper letters, 54 selfloop transitions, 8 changer transitions 0/313 dead transitions. [2022-11-16 12:02:55,001 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 313 transitions, 1035 flow [2022-11-16 12:02:55,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:02:55,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:02:55,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1920 transitions. [2022-11-16 12:02:55,004 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8763121862163396 [2022-11-16 12:02:55,004 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1920 transitions. [2022-11-16 12:02:55,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1920 transitions. [2022-11-16 12:02:55,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:02:55,005 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1920 transitions. [2022-11-16 12:02:55,008 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 274.2857142857143) internal successors, (1920), 7 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:55,011 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 313.0) internal successors, (2504), 8 states have internal predecessors, (2504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:55,012 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 313.0) internal successors, (2504), 8 states have internal predecessors, (2504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:55,012 INFO L175 Difference]: Start difference. First operand has 332 places, 291 transitions, 831 flow. Second operand 7 states and 1920 transitions. [2022-11-16 12:02:55,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 313 transitions, 1035 flow [2022-11-16 12:02:55,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 313 transitions, 1033 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:02:55,021 INFO L231 Difference]: Finished difference. Result has 340 places, 295 transitions, 878 flow [2022-11-16 12:02:55,021 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=825, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=878, PETRI_PLACES=340, PETRI_TRANSITIONS=295} [2022-11-16 12:02:55,022 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 65 predicate places. [2022-11-16 12:02:55,022 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 295 transitions, 878 flow [2022-11-16 12:02:55,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 269.6666666666667) internal successors, (1618), 6 states have internal predecessors, (1618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:55,023 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:02:55,023 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:02:55,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-16 12:02:55,023 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 12:02:55,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:02:55,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1912520841, now seen corresponding path program 1 times [2022-11-16 12:02:55,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:02:55,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091769824] [2022-11-16 12:02:55,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:02:55,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:02:55,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:02:55,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:02:55,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:02:55,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091769824] [2022-11-16 12:02:55,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091769824] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:02:55,154 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:02:55,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:02:55,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634976380] [2022-11-16 12:02:55,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:02:55,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:02:55,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:02:55,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:02:55,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:02:55,157 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 313 [2022-11-16 12:02:55,159 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 295 transitions, 878 flow. Second operand has 8 states, 8 states have (on average 270.25) internal successors, (2162), 8 states have internal predecessors, (2162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:55,160 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:02:55,160 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 313 [2022-11-16 12:02:55,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:02:56,179 INFO L130 PetriNetUnfolder]: 767/4009 cut-off events. [2022-11-16 12:02:56,180 INFO L131 PetriNetUnfolder]: For 962/1190 co-relation queries the response was YES. [2022-11-16 12:02:56,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6388 conditions, 4009 events. 767/4009 cut-off events. For 962/1190 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 45179 event pairs, 2 based on Foata normal form. 0/3274 useless extension candidates. Maximal degree in co-relation 5862. Up to 774 conditions per place. [2022-11-16 12:02:56,246 INFO L137 encePairwiseOnDemand]: 303/313 looper letters, 38 selfloop transitions, 9 changer transitions 0/309 dead transitions. [2022-11-16 12:02:56,246 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 309 transitions, 1008 flow [2022-11-16 12:02:56,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:02:56,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 12:02:56,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2192 transitions. [2022-11-16 12:02:56,253 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8753993610223643 [2022-11-16 12:02:56,253 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2192 transitions. [2022-11-16 12:02:56,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2192 transitions. [2022-11-16 12:02:56,254 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:02:56,254 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2192 transitions. [2022-11-16 12:02:56,258 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 274.0) internal successors, (2192), 8 states have internal predecessors, (2192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:56,261 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 313.0) internal successors, (2817), 9 states have internal predecessors, (2817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:56,263 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 313.0) internal successors, (2817), 9 states have internal predecessors, (2817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:56,263 INFO L175 Difference]: Start difference. First operand has 340 places, 295 transitions, 878 flow. Second operand 8 states and 2192 transitions. [2022-11-16 12:02:56,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 309 transitions, 1008 flow [2022-11-16 12:02:56,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 309 transitions, 1008 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-16 12:02:56,273 INFO L231 Difference]: Finished difference. Result has 349 places, 296 transitions, 908 flow [2022-11-16 12:02:56,274 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=878, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=908, PETRI_PLACES=349, PETRI_TRANSITIONS=296} [2022-11-16 12:02:56,274 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 74 predicate places. [2022-11-16 12:02:56,274 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 296 transitions, 908 flow [2022-11-16 12:02:56,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 270.25) internal successors, (2162), 8 states have internal predecessors, (2162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:56,275 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:02:56,276 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:02:56,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-16 12:02:56,276 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 12:02:56,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:02:56,277 INFO L85 PathProgramCache]: Analyzing trace with hash 841397038, now seen corresponding path program 1 times [2022-11-16 12:02:56,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:02:56,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119794820] [2022-11-16 12:02:56,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:02:56,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:02:56,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:02:56,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:02:56,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:02:56,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119794820] [2022-11-16 12:02:56,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119794820] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:02:56,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:02:56,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:02:56,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570505409] [2022-11-16 12:02:56,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:02:56,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:02:56,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:02:56,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:02:56,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:02:56,424 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 313 [2022-11-16 12:02:56,426 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 296 transitions, 908 flow. Second operand has 8 states, 8 states have (on average 270.375) internal successors, (2163), 8 states have internal predecessors, (2163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:56,426 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:02:56,427 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 313 [2022-11-16 12:02:56,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:02:57,592 INFO L130 PetriNetUnfolder]: 641/3839 cut-off events. [2022-11-16 12:02:57,592 INFO L131 PetriNetUnfolder]: For 1042/1234 co-relation queries the response was YES. [2022-11-16 12:02:57,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6274 conditions, 3839 events. 641/3839 cut-off events. For 1042/1234 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 42804 event pairs, 2 based on Foata normal form. 0/3260 useless extension candidates. Maximal degree in co-relation 5742. Up to 688 conditions per place. [2022-11-16 12:02:57,696 INFO L137 encePairwiseOnDemand]: 303/313 looper letters, 41 selfloop transitions, 9 changer transitions 0/312 dead transitions. [2022-11-16 12:02:57,697 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 312 transitions, 1055 flow [2022-11-16 12:02:57,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:02:57,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 12:02:57,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2194 transitions. [2022-11-16 12:02:57,701 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8761980830670927 [2022-11-16 12:02:57,701 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2194 transitions. [2022-11-16 12:02:57,701 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2194 transitions. [2022-11-16 12:02:57,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:02:57,702 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2194 transitions. [2022-11-16 12:02:57,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 274.25) internal successors, (2194), 8 states have internal predecessors, (2194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:57,709 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 313.0) internal successors, (2817), 9 states have internal predecessors, (2817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:57,710 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 313.0) internal successors, (2817), 9 states have internal predecessors, (2817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:57,710 INFO L175 Difference]: Start difference. First operand has 349 places, 296 transitions, 908 flow. Second operand 8 states and 2194 transitions. [2022-11-16 12:02:57,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 312 transitions, 1055 flow [2022-11-16 12:02:57,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 312 transitions, 1046 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 12:02:57,723 INFO L231 Difference]: Finished difference. Result has 354 places, 297 transitions, 929 flow [2022-11-16 12:02:57,724 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=899, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=929, PETRI_PLACES=354, PETRI_TRANSITIONS=297} [2022-11-16 12:02:57,725 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 79 predicate places. [2022-11-16 12:02:57,725 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 297 transitions, 929 flow [2022-11-16 12:02:57,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 270.375) internal successors, (2163), 8 states have internal predecessors, (2163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:57,726 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:02:57,726 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:02:57,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-16 12:02:57,726 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 12:02:57,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:02:57,727 INFO L85 PathProgramCache]: Analyzing trace with hash 901680210, now seen corresponding path program 1 times [2022-11-16 12:02:57,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:02:57,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178140273] [2022-11-16 12:02:57,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:02:57,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:02:57,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:02:57,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:02:57,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:02:57,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178140273] [2022-11-16 12:02:57,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178140273] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:02:57,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:02:57,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:02:57,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012782240] [2022-11-16 12:02:57,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:02:57,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:02:57,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:02:57,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:02:57,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:02:57,850 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 313 [2022-11-16 12:02:57,852 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 297 transitions, 929 flow. Second operand has 6 states, 6 states have (on average 269.6666666666667) internal successors, (1618), 6 states have internal predecessors, (1618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:57,852 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:02:57,852 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 313 [2022-11-16 12:02:57,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:02:59,007 INFO L130 PetriNetUnfolder]: 1089/3892 cut-off events. [2022-11-16 12:02:59,007 INFO L131 PetriNetUnfolder]: For 1633/2097 co-relation queries the response was YES. [2022-11-16 12:02:59,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7195 conditions, 3892 events. 1089/3892 cut-off events. For 1633/2097 co-relation queries the response was YES. Maximal size of possible extension queue 704. Compared 48107 event pairs, 580 based on Foata normal form. 23/3005 useless extension candidates. Maximal degree in co-relation 7085. Up to 1213 conditions per place. [2022-11-16 12:02:59,062 INFO L137 encePairwiseOnDemand]: 305/313 looper letters, 40 selfloop transitions, 7 changer transitions 4/311 dead transitions. [2022-11-16 12:02:59,062 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 311 transitions, 1067 flow [2022-11-16 12:02:59,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:02:59,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:02:59,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1913 transitions. [2022-11-16 12:02:59,066 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8731172980374259 [2022-11-16 12:02:59,066 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1913 transitions. [2022-11-16 12:02:59,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1913 transitions. [2022-11-16 12:02:59,067 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:02:59,067 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1913 transitions. [2022-11-16 12:02:59,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 273.2857142857143) internal successors, (1913), 7 states have internal predecessors, (1913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:59,073 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 313.0) internal successors, (2504), 8 states have internal predecessors, (2504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:59,074 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 313.0) internal successors, (2504), 8 states have internal predecessors, (2504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:59,074 INFO L175 Difference]: Start difference. First operand has 354 places, 297 transitions, 929 flow. Second operand 7 states and 1913 transitions. [2022-11-16 12:02:59,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 311 transitions, 1067 flow [2022-11-16 12:02:59,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 311 transitions, 1056 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 12:02:59,087 INFO L231 Difference]: Finished difference. Result has 358 places, 300 transitions, 954 flow [2022-11-16 12:02:59,088 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=914, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=954, PETRI_PLACES=358, PETRI_TRANSITIONS=300} [2022-11-16 12:02:59,088 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 83 predicate places. [2022-11-16 12:02:59,088 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 300 transitions, 954 flow [2022-11-16 12:02:59,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 269.6666666666667) internal successors, (1618), 6 states have internal predecessors, (1618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:59,089 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:02:59,089 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:02:59,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-16 12:02:59,089 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-16 12:02:59,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:02:59,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1385653380, now seen corresponding path program 1 times [2022-11-16 12:02:59,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:02:59,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518101299] [2022-11-16 12:02:59,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:02:59,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:02:59,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:02:59,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:02:59,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:02:59,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518101299] [2022-11-16 12:02:59,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518101299] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:02:59,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:02:59,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:02:59,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393388728] [2022-11-16 12:02:59,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:02:59,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:02:59,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:02:59,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:02:59,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:02:59,216 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 266 out of 313 [2022-11-16 12:02:59,217 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 300 transitions, 954 flow. Second operand has 6 states, 6 states have (on average 269.8333333333333) internal successors, (1619), 6 states have internal predecessors, (1619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:02:59,218 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:02:59,218 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 266 of 313 [2022-11-16 12:02:59,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:03:00,220 INFO L130 PetriNetUnfolder]: 1009/3791 cut-off events. [2022-11-16 12:03:00,220 INFO L131 PetriNetUnfolder]: For 1716/2154 co-relation queries the response was YES. [2022-11-16 12:03:00,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7516 conditions, 3791 events. 1009/3791 cut-off events. For 1716/2154 co-relation queries the response was YES. Maximal size of possible extension queue 636. Compared 46693 event pairs, 480 based on Foata normal form. 21/3069 useless extension candidates. Maximal degree in co-relation 7407. Up to 1008 conditions per place. [2022-11-16 12:03:00,266 INFO L137 encePairwiseOnDemand]: 305/313 looper letters, 0 selfloop transitions, 0 changer transitions 321/321 dead transitions. [2022-11-16 12:03:00,266 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 321 transitions, 1148 flow [2022-11-16 12:03:00,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:03:00,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:03:00,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1919 transitions. [2022-11-16 12:03:00,269 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8758557736193519 [2022-11-16 12:03:00,269 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1919 transitions. [2022-11-16 12:03:00,270 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1919 transitions. [2022-11-16 12:03:00,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:03:00,271 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1919 transitions. [2022-11-16 12:03:00,273 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 274.14285714285717) internal successors, (1919), 7 states have internal predecessors, (1919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:03:00,276 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 313.0) internal successors, (2504), 8 states have internal predecessors, (2504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:03:00,277 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 313.0) internal successors, (2504), 8 states have internal predecessors, (2504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:03:00,277 INFO L175 Difference]: Start difference. First operand has 358 places, 300 transitions, 954 flow. Second operand 7 states and 1919 transitions. [2022-11-16 12:03:00,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 321 transitions, 1148 flow [2022-11-16 12:03:00,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 321 transitions, 1146 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:03:00,297 INFO L231 Difference]: Finished difference. Result has 362 places, 0 transitions, 0 flow [2022-11-16 12:03:00,297 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=313, PETRI_DIFFERENCE_MINUEND_FLOW=948, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=362, PETRI_TRANSITIONS=0} [2022-11-16 12:03:00,298 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 87 predicate places. [2022-11-16 12:03:00,298 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 0 transitions, 0 flow [2022-11-16 12:03:00,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 269.8333333333333) internal successors, (1619), 6 states have internal predecessors, (1619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:03:00,301 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 39 remaining) [2022-11-16 12:03:00,302 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 39 remaining) [2022-11-16 12:03:00,302 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 39 remaining) [2022-11-16 12:03:00,302 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 39 remaining) [2022-11-16 12:03:00,302 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 39 remaining) [2022-11-16 12:03:00,303 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 39 remaining) [2022-11-16 12:03:00,303 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 39 remaining) [2022-11-16 12:03:00,303 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 39 remaining) [2022-11-16 12:03:00,303 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 39 remaining) [2022-11-16 12:03:00,303 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 39 remaining) [2022-11-16 12:03:00,304 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 39 remaining) [2022-11-16 12:03:00,304 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 39 remaining) [2022-11-16 12:03:00,304 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 39 remaining) [2022-11-16 12:03:00,304 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 39 remaining) [2022-11-16 12:03:00,304 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 39 remaining) [2022-11-16 12:03:00,304 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 39 remaining) [2022-11-16 12:03:00,305 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 39 remaining) [2022-11-16 12:03:00,305 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 39 remaining) [2022-11-16 12:03:00,305 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 39 remaining) [2022-11-16 12:03:00,305 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (19 of 39 remaining) [2022-11-16 12:03:00,305 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 39 remaining) [2022-11-16 12:03:00,306 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 39 remaining) [2022-11-16 12:03:00,306 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 39 remaining) [2022-11-16 12:03:00,306 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 39 remaining) [2022-11-16 12:03:00,306 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 39 remaining) [2022-11-16 12:03:00,306 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 39 remaining) [2022-11-16 12:03:00,307 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 39 remaining) [2022-11-16 12:03:00,307 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 39 remaining) [2022-11-16 12:03:00,307 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 39 remaining) [2022-11-16 12:03:00,307 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 39 remaining) [2022-11-16 12:03:00,307 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 39 remaining) [2022-11-16 12:03:00,307 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 39 remaining) [2022-11-16 12:03:00,308 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 39 remaining) [2022-11-16 12:03:00,308 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 39 remaining) [2022-11-16 12:03:00,308 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 39 remaining) [2022-11-16 12:03:00,308 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 39 remaining) [2022-11-16 12:03:00,308 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 39 remaining) [2022-11-16 12:03:00,309 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 39 remaining) [2022-11-16 12:03:00,309 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 39 remaining) [2022-11-16 12:03:00,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-16 12:03:00,309 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] [2022-11-16 12:03:00,315 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-16 12:03:00,316 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 12:03:00,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 12:03:00 BasicIcfg [2022-11-16 12:03:00,321 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 12:03:00,321 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 12:03:00,321 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 12:03:00,322 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 12:03:00,322 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:02:36" (3/4) ... [2022-11-16 12:03:00,325 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-16 12:03:00,331 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-16 12:03:00,331 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-16 12:03:00,331 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-11-16 12:03:00,336 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2022-11-16 12:03:00,336 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-16 12:03:00,336 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-16 12:03:00,337 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-16 12:03:00,381 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b88e5be5-7f00-4fa9-be7e-1ef8d69eeec0/bin/uautomizer-tPACEb0tL8/witness.graphml [2022-11-16 12:03:00,381 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 12:03:00,381 INFO L158 Benchmark]: Toolchain (without parser) took 25170.70ms. Allocated memory was 98.6MB in the beginning and 1.1GB in the end (delta: 987.8MB). Free memory was 62.5MB in the beginning and 825.4MB in the end (delta: -762.9MB). Peak memory consumption was 224.8MB. Max. memory is 16.1GB. [2022-11-16 12:03:00,382 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 98.6MB. Free memory is still 78.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:03:00,382 INFO L158 Benchmark]: CACSL2BoogieTranslator took 407.25ms. Allocated memory is still 98.6MB. Free memory was 62.3MB in the beginning and 74.3MB in the end (delta: -12.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 12:03:00,382 INFO L158 Benchmark]: Boogie Procedure Inliner took 75.78ms. Allocated memory is still 98.6MB. Free memory was 74.3MB in the beginning and 71.8MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:03:00,383 INFO L158 Benchmark]: Boogie Preprocessor took 63.28ms. Allocated memory is still 98.6MB. Free memory was 71.8MB in the beginning and 70.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:03:00,383 INFO L158 Benchmark]: RCFGBuilder took 701.18ms. Allocated memory is still 98.6MB. Free memory was 70.3MB in the beginning and 47.2MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-11-16 12:03:00,383 INFO L158 Benchmark]: TraceAbstraction took 23856.74ms. Allocated memory was 98.6MB in the beginning and 1.1GB in the end (delta: 987.8MB). Free memory was 46.4MB in the beginning and 828.6MB in the end (delta: -782.2MB). Peak memory consumption was 713.8MB. Max. memory is 16.1GB. [2022-11-16 12:03:00,384 INFO L158 Benchmark]: Witness Printer took 59.72ms. Allocated memory is still 1.1GB. Free memory was 828.6MB in the beginning and 825.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:03:00,389 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 98.6MB. Free memory is still 78.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 407.25ms. Allocated memory is still 98.6MB. Free memory was 62.3MB in the beginning and 74.3MB in the end (delta: -12.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 75.78ms. Allocated memory is still 98.6MB. Free memory was 74.3MB in the beginning and 71.8MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 63.28ms. Allocated memory is still 98.6MB. Free memory was 71.8MB in the beginning and 70.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 701.18ms. Allocated memory is still 98.6MB. Free memory was 70.3MB in the beginning and 47.2MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 23856.74ms. Allocated memory was 98.6MB in the beginning and 1.1GB in the end (delta: 987.8MB). Free memory was 46.4MB in the beginning and 828.6MB in the end (delta: -782.2MB). Peak memory consumption was 713.8MB. Max. memory is 16.1GB. * Witness Printer took 59.72ms. Allocated memory is still 1.1GB. Free memory was 828.6MB in the beginning and 825.4MB 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: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 90]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 90]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 91]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 91]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 90]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 90]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 91]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 91]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 90]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 90]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 91]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 91]: 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, 487 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: 23.6s, OverallIterations: 27, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 19.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1499 SdHoareTripleChecker+Valid, 2.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1499 mSDsluCounter, 736 SdHoareTripleChecker+Invalid, 1.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 367 mSDsCounter, 68 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2365 IncrementalHoareTripleChecker+Invalid, 2433 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 68 mSolverCounterUnsat, 369 mSDtfsCounter, 2365 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 189 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=954occurred in iteration=26, InterpolantAutomatonStates: 162, 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, 2.9s InterpolantComputationTime, 2229 NumberOfCodeBlocks, 2229 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 2202 ConstructedInterpolants, 0 QuantifiedInterpolants, 4737 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! [2022-11-16 12:03:00,422 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b88e5be5-7f00-4fa9-be7e-1ef8d69eeec0/bin/uautomizer-tPACEb0tL8/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