./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.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_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/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_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/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_f890227a-a569-4ad4-a248-853388adecf5/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 c80601716e9c0111d78d12f0a88108c91b0aa7215f8e775685e33490f22c8502 --- 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 12:43:14,822 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:43:14,825 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:43:14,849 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:43:14,849 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:43:14,851 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:43:14,853 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:43:14,855 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:43:14,863 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:43:14,864 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:43:14,866 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:43:14,871 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:43:14,871 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:43:14,873 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:43:14,876 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:43:14,880 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:43:14,882 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:43:14,886 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:43:14,888 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:43:14,893 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:43:14,901 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:43:14,902 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:43:14,904 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:43:14,909 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:43:14,913 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:43:14,920 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:43:14,921 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:43:14,922 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:43:14,923 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:43:14,924 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:43:14,925 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:43:14,926 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:43:14,929 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:43:14,931 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:43:14,933 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:43:14,934 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:43:14,935 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:43:14,935 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:43:14,936 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:43:14,937 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:43:14,938 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:43:14,939 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 12:43:14,990 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:43:14,990 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:43:14,991 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:43:14,992 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:43:14,993 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:43:14,993 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:43:14,994 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:43:14,995 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:43:14,995 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:43:14,995 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:43:14,997 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:43:14,997 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:43:14,997 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:43:14,997 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:43:14,998 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:43:14,998 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:43:14,998 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:43:14,998 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:43:14,999 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 12:43:14,999 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:43:14,999 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:43:14,999 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:43:15,000 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:43:15,001 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:43:15,001 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:43:15,001 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:43:15,003 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:43:15,003 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:43:15,004 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:43:15,004 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:43:15,004 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:43:15,004 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:43:15,005 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:43:15,005 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:43:15,005 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:43:15,006 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_f890227a-a569-4ad4-a248-853388adecf5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c80601716e9c0111d78d12f0a88108c91b0aa7215f8e775685e33490f22c8502 [2022-11-16 12:43:15,309 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:43:15,356 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:43:15,359 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:43:15,361 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:43:15,366 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:43:15,367 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c [2022-11-16 12:43:15,450 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/data/0df8db53c/64d01e24321741b4a8235cad4a7151f6/FLAGb2c99bf5b [2022-11-16 12:43:15,984 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:43:15,985 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c [2022-11-16 12:43:15,994 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/data/0df8db53c/64d01e24321741b4a8235cad4a7151f6/FLAGb2c99bf5b [2022-11-16 12:43:16,341 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/data/0df8db53c/64d01e24321741b4a8235cad4a7151f6 [2022-11-16 12:43:16,344 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:43:16,346 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:43:16,348 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:43:16,348 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:43:16,353 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:43:16,354 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:43:16" (1/1) ... [2022-11-16 12:43:16,355 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5dd30be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:43:16, skipping insertion in model container [2022-11-16 12:43:16,356 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:43:16" (1/1) ... [2022-11-16 12:43:16,372 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:43:16,402 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:43:16,705 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_f890227a-a569-4ad4-a248-853388adecf5/sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c[2870,2883] [2022-11-16 12:43:16,724 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:43:16,743 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:43:16,800 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_f890227a-a569-4ad4-a248-853388adecf5/sv-benchmarks/c/weaver/popl20-more-queue-add-2-nl.wvr.c[2870,2883] [2022-11-16 12:43:16,803 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:43:16,827 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:43:16,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:43:16 WrapperNode [2022-11-16 12:43:16,828 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:43:16,830 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:43:16,830 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:43:16,830 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:43:16,840 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:43:16" (1/1) ... [2022-11-16 12:43:16,868 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:43:16" (1/1) ... [2022-11-16 12:43:16,914 INFO L138 Inliner]: procedures = 25, calls = 39, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 175 [2022-11-16 12:43:16,916 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:43:16,917 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:43:16,917 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:43:16,917 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:43:16,930 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:43:16" (1/1) ... [2022-11-16 12:43:16,930 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:43:16" (1/1) ... [2022-11-16 12:43:16,950 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:43:16" (1/1) ... [2022-11-16 12:43:16,951 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:43:16" (1/1) ... [2022-11-16 12:43:16,959 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:43:16" (1/1) ... [2022-11-16 12:43:16,973 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:43:16" (1/1) ... [2022-11-16 12:43:16,988 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:43:16" (1/1) ... [2022-11-16 12:43:16,990 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:43:16" (1/1) ... [2022-11-16 12:43:16,993 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:43:16,999 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:43:16,999 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:43:17,000 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:43:17,001 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:43:16" (1/1) ... [2022-11-16 12:43:17,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:43:17,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:43:17,043 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:43:17,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:43:17,086 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:43:17,086 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:43:17,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:43:17,086 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:43:17,086 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 12:43:17,087 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 12:43:17,087 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 12:43:17,087 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 12:43:17,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:43:17,087 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-16 12:43:17,088 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-16 12:43:17,088 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 12:43:17,088 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:43:17,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:43:17,088 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:43:17,090 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 12:43:17,212 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:43:17,214 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:43:17,702 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:43:17,866 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:43:17,866 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-16 12:43:17,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:43:17 BoogieIcfgContainer [2022-11-16 12:43:17,873 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:43:17,875 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:43:17,876 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:43:17,880 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:43:17,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:43:16" (1/3) ... [2022-11-16 12:43:17,881 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aa86121 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:43:17, skipping insertion in model container [2022-11-16 12:43:17,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:43:16" (2/3) ... [2022-11-16 12:43:17,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aa86121 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:43:17, skipping insertion in model container [2022-11-16 12:43:17,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:43:17" (3/3) ... [2022-11-16 12:43:17,883 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-queue-add-2-nl.wvr.c [2022-11-16 12:43:17,893 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 12:43:17,905 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:43:17,906 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-11-16 12:43:17,906 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:43:17,985 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-16 12:43:18,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 158 places, 162 transitions, 340 flow [2022-11-16 12:43:18,097 INFO L130 PetriNetUnfolder]: 11/160 cut-off events. [2022-11-16 12:43:18,098 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-16 12:43:18,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169 conditions, 160 events. 11/160 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 146 event pairs, 0 based on Foata normal form. 0/137 useless extension candidates. Maximal degree in co-relation 118. Up to 3 conditions per place. [2022-11-16 12:43:18,104 INFO L82 GeneralOperation]: Start removeDead. Operand has 158 places, 162 transitions, 340 flow [2022-11-16 12:43:18,112 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 138 places, 141 transitions, 291 flow [2022-11-16 12:43:18,125 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:43:18,139 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;@6ab7fcd3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:43:18,139 INFO L358 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2022-11-16 12:43:18,170 INFO L130 PetriNetUnfolder]: 3/72 cut-off events. [2022-11-16 12:43:18,170 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:43:18,170 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:43:18,175 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] [2022-11-16 12:43:18,176 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-11-16 12:43:18,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:43:18,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1376634215, now seen corresponding path program 1 times [2022-11-16 12:43:18,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:43:18,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565544625] [2022-11-16 12:43:18,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:43:18,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:43:18,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:43:18,808 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 12:43:18,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:43:18,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565544625] [2022-11-16 12:43:18,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565544625] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:43:18,810 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:43:18,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:43:18,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150840975] [2022-11-16 12:43:18,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:43:18,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:43:18,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:43:18,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:43:18,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:43:18,894 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 162 [2022-11-16 12:43:18,899 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 141 transitions, 291 flow. Second operand has 4 states, 4 states have (on average 129.5) internal successors, (518), 4 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:43:18,899 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:43:18,900 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 162 [2022-11-16 12:43:18,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:43:19,169 INFO L130 PetriNetUnfolder]: 57/368 cut-off events. [2022-11-16 12:43:19,169 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-11-16 12:43:19,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 520 conditions, 368 events. 57/368 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1405 event pairs, 28 based on Foata normal form. 30/304 useless extension candidates. Maximal degree in co-relation 192. Up to 62 conditions per place. [2022-11-16 12:43:19,182 INFO L137 encePairwiseOnDemand]: 146/162 looper letters, 34 selfloop transitions, 4 changer transitions 3/148 dead transitions. [2022-11-16 12:43:19,183 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 148 transitions, 390 flow [2022-11-16 12:43:19,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:43:19,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:43:19,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 698 transitions. [2022-11-16 12:43:19,205 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8617283950617284 [2022-11-16 12:43:19,207 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 698 transitions. [2022-11-16 12:43:19,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 698 transitions. [2022-11-16 12:43:19,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:43:19,214 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 698 transitions. [2022-11-16 12:43:19,219 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 139.6) internal successors, (698), 5 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:43:19,230 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:43:19,237 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:43:19,239 INFO L175 Difference]: Start difference. First operand has 138 places, 141 transitions, 291 flow. Second operand 5 states and 698 transitions. [2022-11-16 12:43:19,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 148 transitions, 390 flow [2022-11-16 12:43:19,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 148 transitions, 380 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:43:19,249 INFO L231 Difference]: Finished difference. Result has 139 places, 131 transitions, 290 flow [2022-11-16 12:43:19,252 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=290, PETRI_PLACES=139, PETRI_TRANSITIONS=131} [2022-11-16 12:43:19,257 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 1 predicate places. [2022-11-16 12:43:19,257 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 131 transitions, 290 flow [2022-11-16 12:43:19,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 129.5) internal successors, (518), 4 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:43:19,258 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:43:19,259 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:43:19,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:43:19,259 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-11-16 12:43:19,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:43:19,260 INFO L85 PathProgramCache]: Analyzing trace with hash -858895523, now seen corresponding path program 1 times [2022-11-16 12:43:19,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:43:19,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547619787] [2022-11-16 12:43:19,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:43:19,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:43:19,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:43:19,466 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:43:19,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:43:19,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547619787] [2022-11-16 12:43:19,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547619787] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:43:19,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816852705] [2022-11-16 12:43:19,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:43:19,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:43:19,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:43:19,478 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:43:19,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:43:19,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:43:19,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:43:19,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:43:19,813 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:43:19,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:43:19,876 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:43:19,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [816852705] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:43:19,877 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:43:19,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-16 12:43:19,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886538057] [2022-11-16 12:43:19,878 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:43:19,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:43:19,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:43:19,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:43:19,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:43:19,883 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 162 [2022-11-16 12:43:19,886 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 131 transitions, 290 flow. Second operand has 12 states, 12 states have (on average 130.66666666666666) internal successors, (1568), 12 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:43:19,886 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:43:19,886 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 162 [2022-11-16 12:43:19,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:43:20,506 INFO L130 PetriNetUnfolder]: 141/825 cut-off events. [2022-11-16 12:43:20,507 INFO L131 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2022-11-16 12:43:20,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1200 conditions, 825 events. 141/825 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 4415 event pairs, 70 based on Foata normal form. 3/608 useless extension candidates. Maximal degree in co-relation 908. Up to 57 conditions per place. [2022-11-16 12:43:20,517 INFO L137 encePairwiseOnDemand]: 155/162 looper letters, 73 selfloop transitions, 18 changer transitions 0/198 dead transitions. [2022-11-16 12:43:20,517 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 198 transitions, 644 flow [2022-11-16 12:43:20,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 12:43:20,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-16 12:43:20,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2398 transitions. [2022-11-16 12:43:20,526 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8223593964334706 [2022-11-16 12:43:20,527 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2398 transitions. [2022-11-16 12:43:20,527 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2398 transitions. [2022-11-16 12:43:20,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:43:20,530 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2398 transitions. [2022-11-16 12:43:20,537 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 133.22222222222223) internal successors, (2398), 18 states have internal predecessors, (2398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:43:20,549 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 162.0) internal successors, (3078), 19 states have internal predecessors, (3078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:43:20,552 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 162.0) internal successors, (3078), 19 states have internal predecessors, (3078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:43:20,552 INFO L175 Difference]: Start difference. First operand has 139 places, 131 transitions, 290 flow. Second operand 18 states and 2398 transitions. [2022-11-16 12:43:20,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 198 transitions, 644 flow [2022-11-16 12:43:20,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 198 transitions, 642 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:43:20,608 INFO L231 Difference]: Finished difference. Result has 156 places, 143 transitions, 394 flow [2022-11-16 12:43:20,609 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=394, PETRI_PLACES=156, PETRI_TRANSITIONS=143} [2022-11-16 12:43:20,610 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 18 predicate places. [2022-11-16 12:43:20,610 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 143 transitions, 394 flow [2022-11-16 12:43:20,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 130.66666666666666) internal successors, (1568), 12 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:43:20,611 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:43:20,612 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:43:20,633 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 12:43:20,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:43:20,820 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-11-16 12:43:20,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:43:20,821 INFO L85 PathProgramCache]: Analyzing trace with hash -855957026, now seen corresponding path program 1 times [2022-11-16 12:43:20,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:43:20,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649965965] [2022-11-16 12:43:20,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:43:20,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:43:20,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:43:21,056 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:43:21,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:43:21,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649965965] [2022-11-16 12:43:21,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649965965] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:43:21,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883346061] [2022-11-16 12:43:21,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:43:21,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:43:21,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:43:21,060 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:43:21,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 12:43:21,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:43:21,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:43:21,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:43:21,244 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:43:21,245 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:43:21,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883346061] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:43:21,246 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:43:21,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 12:43:21,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269020367] [2022-11-16 12:43:21,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:43:21,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:43:21,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:43:21,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:43:21,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:43:21,251 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 162 [2022-11-16 12:43:21,253 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 143 transitions, 394 flow. Second operand has 6 states, 6 states have (on average 130.33333333333334) internal successors, (782), 6 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:43:21,254 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:43:21,254 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 162 [2022-11-16 12:43:21,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:43:21,609 INFO L130 PetriNetUnfolder]: 141/821 cut-off events. [2022-11-16 12:43:21,610 INFO L131 PetriNetUnfolder]: For 62/62 co-relation queries the response was YES. [2022-11-16 12:43:21,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1218 conditions, 821 events. 141/821 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 4380 event pairs, 70 based on Foata normal form. 4/605 useless extension candidates. Maximal degree in co-relation 960. Up to 212 conditions per place. [2022-11-16 12:43:21,619 INFO L137 encePairwiseOnDemand]: 157/162 looper letters, 35 selfloop transitions, 11 changer transitions 0/153 dead transitions. [2022-11-16 12:43:21,620 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 153 transitions, 493 flow [2022-11-16 12:43:21,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:43:21,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:43:21,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 934 transitions. [2022-11-16 12:43:21,624 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8236331569664903 [2022-11-16 12:43:21,625 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 934 transitions. [2022-11-16 12:43:21,625 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 934 transitions. [2022-11-16 12:43:21,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:43:21,626 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 934 transitions. [2022-11-16 12:43:21,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 133.42857142857142) internal successors, (934), 7 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:43:21,635 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 162.0) internal successors, (1296), 8 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:43:21,636 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 162.0) internal successors, (1296), 8 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:43:21,637 INFO L175 Difference]: Start difference. First operand has 156 places, 143 transitions, 394 flow. Second operand 7 states and 934 transitions. [2022-11-16 12:43:21,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 153 transitions, 493 flow [2022-11-16 12:43:21,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 153 transitions, 461 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-11-16 12:43:21,650 INFO L231 Difference]: Finished difference. Result has 152 places, 139 transitions, 357 flow [2022-11-16 12:43:21,650 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=335, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=357, PETRI_PLACES=152, PETRI_TRANSITIONS=139} [2022-11-16 12:43:21,653 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 14 predicate places. [2022-11-16 12:43:21,654 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 139 transitions, 357 flow [2022-11-16 12:43:21,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 130.33333333333334) internal successors, (782), 6 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:43:21,655 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:43:21,656 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 12:43:21,663 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 12:43:21,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-11-16 12:43:21,863 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-11-16 12:43:21,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:43:21,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1864197742, now seen corresponding path program 1 times [2022-11-16 12:43:21,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:43:21,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265027139] [2022-11-16 12:43:21,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:43:21,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:43:21,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:43:22,104 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 12:43:22,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:43:22,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265027139] [2022-11-16 12:43:22,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265027139] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:43:22,106 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:43:22,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:43:22,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053297059] [2022-11-16 12:43:22,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:43:22,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:43:22,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:43:22,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:43:22,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:43:22,110 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 162 [2022-11-16 12:43:22,111 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 139 transitions, 357 flow. Second operand has 6 states, 6 states have (on average 128.0) internal successors, (768), 6 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:43:22,112 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:43:22,112 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 162 [2022-11-16 12:43:22,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:43:22,397 INFO L130 PetriNetUnfolder]: 113/708 cut-off events. [2022-11-16 12:43:22,398 INFO L131 PetriNetUnfolder]: For 56/56 co-relation queries the response was YES. [2022-11-16 12:43:22,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1036 conditions, 708 events. 113/708 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 3514 event pairs, 56 based on Foata normal form. 5/535 useless extension candidates. Maximal degree in co-relation 900. Up to 221 conditions per place. [2022-11-16 12:43:22,404 INFO L137 encePairwiseOnDemand]: 149/162 looper letters, 27 selfloop transitions, 6 changer transitions 3/144 dead transitions. [2022-11-16 12:43:22,405 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 144 transitions, 442 flow [2022-11-16 12:43:22,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:43:22,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:43:22,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 918 transitions. [2022-11-16 12:43:22,409 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8095238095238095 [2022-11-16 12:43:22,409 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 918 transitions. [2022-11-16 12:43:22,409 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 918 transitions. [2022-11-16 12:43:22,410 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:43:22,411 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 918 transitions. [2022-11-16 12:43:22,413 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 131.14285714285714) internal successors, (918), 7 states have internal predecessors, (918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:43:22,416 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 162.0) internal successors, (1296), 8 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:43:22,417 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 162.0) internal successors, (1296), 8 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:43:22,418 INFO L175 Difference]: Start difference. First operand has 152 places, 139 transitions, 357 flow. Second operand 7 states and 918 transitions. [2022-11-16 12:43:22,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 144 transitions, 442 flow [2022-11-16 12:43:22,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 144 transitions, 428 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 12:43:22,424 INFO L231 Difference]: Finished difference. Result has 155 places, 139 transitions, 371 flow [2022-11-16 12:43:22,424 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=343, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=371, PETRI_PLACES=155, PETRI_TRANSITIONS=139} [2022-11-16 12:43:22,425 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 17 predicate places. [2022-11-16 12:43:22,426 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 139 transitions, 371 flow [2022-11-16 12:43:22,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 128.0) internal successors, (768), 6 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:43:22,427 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:43:22,427 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 12:43:22,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 12:43:22,428 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-11-16 12:43:22,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:43:22,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1321418696, now seen corresponding path program 1 times [2022-11-16 12:43:22,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:43:22,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146105668] [2022-11-16 12:43:22,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:43:22,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:43:22,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:43:22,677 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:43:22,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:43:22,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146105668] [2022-11-16 12:43:22,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146105668] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:43:22,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1935643398] [2022-11-16 12:43:22,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:43:22,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:43:22,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:43:22,680 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:43:22,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 12:43:22,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:43:22,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:43:22,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:43:22,954 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:43:22,954 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:43:22,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1935643398] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:43:22,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:43:22,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2022-11-16 12:43:22,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712488509] [2022-11-16 12:43:22,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:43:22,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:43:22,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:43:22,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:43:22,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:43:22,959 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 162 [2022-11-16 12:43:22,961 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 139 transitions, 371 flow. Second operand has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:43:22,961 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:43:22,961 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 162 [2022-11-16 12:43:22,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:43:23,106 INFO L130 PetriNetUnfolder]: 45/501 cut-off events. [2022-11-16 12:43:23,107 INFO L131 PetriNetUnfolder]: For 79/103 co-relation queries the response was YES. [2022-11-16 12:43:23,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 726 conditions, 501 events. 45/501 cut-off events. For 79/103 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2154 event pairs, 20 based on Foata normal form. 0/437 useless extension candidates. Maximal degree in co-relation 633. Up to 84 conditions per place. [2022-11-16 12:43:23,113 INFO L137 encePairwiseOnDemand]: 156/162 looper letters, 9 selfloop transitions, 3 changer transitions 0/136 dead transitions. [2022-11-16 12:43:23,113 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 136 transitions, 383 flow [2022-11-16 12:43:23,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:43:23,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 12:43:23,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 551 transitions. [2022-11-16 12:43:23,116 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8503086419753086 [2022-11-16 12:43:23,117 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 551 transitions. [2022-11-16 12:43:23,117 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 551 transitions. [2022-11-16 12:43:23,117 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:43:23,118 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 551 transitions. [2022-11-16 12:43:23,119 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 137.75) internal successors, (551), 4 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:43:23,121 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 162.0) internal successors, (810), 5 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:43:23,122 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 162.0) internal successors, (810), 5 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:43:23,122 INFO L175 Difference]: Start difference. First operand has 155 places, 139 transitions, 371 flow. Second operand 4 states and 551 transitions. [2022-11-16 12:43:23,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 136 transitions, 383 flow [2022-11-16 12:43:23,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 136 transitions, 371 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 12:43:23,129 INFO L231 Difference]: Finished difference. Result has 149 places, 136 transitions, 353 flow [2022-11-16 12:43:23,129 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=347, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=353, PETRI_PLACES=149, PETRI_TRANSITIONS=136} [2022-11-16 12:43:23,133 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 11 predicate places. [2022-11-16 12:43:23,134 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 136 transitions, 353 flow [2022-11-16 12:43:23,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:43:23,134 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:43:23,135 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 12:43:23,143 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 12:43:23,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:43:23,342 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-11-16 12:43:23,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:43:23,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1287456467, now seen corresponding path program 1 times [2022-11-16 12:43:23,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:43:23,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083726697] [2022-11-16 12:43:23,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:43:23,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:43:23,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:43:23,436 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:43:23,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:43:23,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083726697] [2022-11-16 12:43:23,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083726697] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:43:23,437 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:43:23,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:43:23,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704218713] [2022-11-16 12:43:23,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:43:23,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:43:23,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:43:23,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:43:23,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:43:23,441 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 162 [2022-11-16 12:43:23,442 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 136 transitions, 353 flow. Second operand has 4 states, 4 states have (on average 131.5) internal successors, (526), 4 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:43:23,442 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:43:23,442 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 162 [2022-11-16 12:43:23,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:43:23,736 INFO L130 PetriNetUnfolder]: 237/977 cut-off events. [2022-11-16 12:43:23,737 INFO L131 PetriNetUnfolder]: For 166/286 co-relation queries the response was YES. [2022-11-16 12:43:23,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1885 conditions, 977 events. 237/977 cut-off events. For 166/286 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 6082 event pairs, 80 based on Foata normal form. 0/825 useless extension candidates. Maximal degree in co-relation 1841. Up to 305 conditions per place. [2022-11-16 12:43:23,747 INFO L137 encePairwiseOnDemand]: 156/162 looper letters, 28 selfloop transitions, 4 changer transitions 0/152 dead transitions. [2022-11-16 12:43:23,747 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 152 transitions, 466 flow [2022-11-16 12:43:23,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:43:23,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:43:23,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 684 transitions. [2022-11-16 12:43:23,751 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8444444444444444 [2022-11-16 12:43:23,751 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 684 transitions. [2022-11-16 12:43:23,752 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 684 transitions. [2022-11-16 12:43:23,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:43:23,753 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 684 transitions. [2022-11-16 12:43:23,755 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 136.8) internal successors, (684), 5 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:43:23,757 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:43:23,757 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 162.0) internal successors, (972), 6 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:43:23,758 INFO L175 Difference]: Start difference. First operand has 149 places, 136 transitions, 353 flow. Second operand 5 states and 684 transitions. [2022-11-16 12:43:23,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 152 transitions, 466 flow [2022-11-16 12:43:23,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 152 transitions, 460 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:43:23,763 INFO L231 Difference]: Finished difference. Result has 153 places, 139 transitions, 377 flow [2022-11-16 12:43:23,764 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=347, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=377, PETRI_PLACES=153, PETRI_TRANSITIONS=139} [2022-11-16 12:43:23,767 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 15 predicate places. [2022-11-16 12:43:23,767 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 139 transitions, 377 flow [2022-11-16 12:43:23,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 131.5) internal successors, (526), 4 states have internal predecessors, (526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:43:23,768 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:43:23,768 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] [2022-11-16 12:43:23,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 12:43:23,769 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-11-16 12:43:23,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:43:23,769 INFO L85 PathProgramCache]: Analyzing trace with hash 71763343, now seen corresponding path program 1 times [2022-11-16 12:43:23,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:43:23,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799611981] [2022-11-16 12:43:23,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:43:23,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:43:23,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:43:23,988 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:43:23,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:43:23,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799611981] [2022-11-16 12:43:23,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799611981] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:43:23,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:43:23,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:43:23,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498833292] [2022-11-16 12:43:23,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:43:23,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:43:23,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:43:23,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:43:23,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:43:23,992 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 162 [2022-11-16 12:43:23,993 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 139 transitions, 377 flow. Second operand has 3 states, 3 states have (on average 138.33333333333334) internal successors, (415), 3 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:43:23,993 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:43:23,993 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 162 [2022-11-16 12:43:23,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:43:24,185 INFO L130 PetriNetUnfolder]: 65/801 cut-off events. [2022-11-16 12:43:24,185 INFO L131 PetriNetUnfolder]: For 138/178 co-relation queries the response was YES. [2022-11-16 12:43:24,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1209 conditions, 801 events. 65/801 cut-off events. For 138/178 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 4656 event pairs, 16 based on Foata normal form. 4/705 useless extension candidates. Maximal degree in co-relation 1116. Up to 124 conditions per place. [2022-11-16 12:43:24,193 INFO L137 encePairwiseOnDemand]: 158/162 looper letters, 10 selfloop transitions, 3 changer transitions 0/142 dead transitions. [2022-11-16 12:43:24,193 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 142 transitions, 415 flow [2022-11-16 12:43:24,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:43:24,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:43:24,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 422 transitions. [2022-11-16 12:43:24,196 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8683127572016461 [2022-11-16 12:43:24,196 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 422 transitions. [2022-11-16 12:43:24,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 422 transitions. [2022-11-16 12:43:24,197 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:43:24,197 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 422 transitions. [2022-11-16 12:43:24,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:43:24,201 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 162.0) internal successors, (648), 4 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:43:24,201 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 162.0) internal successors, (648), 4 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:43:24,202 INFO L175 Difference]: Start difference. First operand has 153 places, 139 transitions, 377 flow. Second operand 3 states and 422 transitions. [2022-11-16 12:43:24,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 142 transitions, 415 flow [2022-11-16 12:43:24,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 142 transitions, 413 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:43:24,207 INFO L231 Difference]: Finished difference. Result has 155 places, 141 transitions, 398 flow [2022-11-16 12:43:24,208 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=375, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=398, PETRI_PLACES=155, PETRI_TRANSITIONS=141} [2022-11-16 12:43:24,209 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 17 predicate places. [2022-11-16 12:43:24,209 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 141 transitions, 398 flow [2022-11-16 12:43:24,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.33333333333334) internal successors, (415), 3 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:43:24,210 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:43:24,210 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:43:24,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 12:43:24,210 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-11-16 12:43:24,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:43:24,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1699118205, now seen corresponding path program 1 times [2022-11-16 12:43:24,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:43:24,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188483759] [2022-11-16 12:43:24,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:43:24,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:43:24,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:43:26,391 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:43:26,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:43:26,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188483759] [2022-11-16 12:43:26,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188483759] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:43:26,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47880850] [2022-11-16 12:43:26,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:43:26,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:43:26,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:43:26,394 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:43:26,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 12:43:26,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:43:26,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-16 12:43:26,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:43:27,330 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-16 12:43:28,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:43:28,551 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-16 12:43:28,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:43:28,804 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-16 12:43:29,263 INFO L321 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-11-16 12:43:29,264 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-11-16 12:43:29,340 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:43:29,340 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:43:31,094 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:43:31,095 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2022-11-16 12:43:31,114 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:43:31,116 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 158 treesize of output 146 [2022-11-16 12:43:31,132 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 118 [2022-11-16 12:43:31,141 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 94 [2022-11-16 12:43:33,316 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:43:33,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [47880850] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:43:33,317 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:43:33,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 63 [2022-11-16 12:43:33,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11679272] [2022-11-16 12:43:33,318 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:43:33,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-11-16 12:43:33,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:43:33,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-11-16 12:43:33,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=3767, Unknown=5, NotChecked=0, Total=4032 [2022-11-16 12:43:33,331 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 162 [2022-11-16 12:43:33,340 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 141 transitions, 398 flow. Second operand has 64 states, 64 states have (on average 80.953125) internal successors, (5181), 64 states have internal predecessors, (5181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:43:33,340 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:43:33,340 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 162 [2022-11-16 12:43:33,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:43:37,397 INFO L130 PetriNetUnfolder]: 719/2409 cut-off events. [2022-11-16 12:43:37,397 INFO L131 PetriNetUnfolder]: For 1139/1331 co-relation queries the response was YES. [2022-11-16 12:43:37,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4976 conditions, 2409 events. 719/2409 cut-off events. For 1139/1331 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 18992 event pairs, 384 based on Foata normal form. 0/2082 useless extension candidates. Maximal degree in co-relation 4849. Up to 1190 conditions per place. [2022-11-16 12:43:37,418 INFO L137 encePairwiseOnDemand]: 128/162 looper letters, 76 selfloop transitions, 51 changer transitions 0/193 dead transitions. [2022-11-16 12:43:37,418 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 193 transitions, 816 flow [2022-11-16 12:43:37,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-16 12:43:37,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-11-16 12:43:37,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 2566 transitions. [2022-11-16 12:43:37,426 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5109518120270808 [2022-11-16 12:43:37,426 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 2566 transitions. [2022-11-16 12:43:37,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 2566 transitions. [2022-11-16 12:43:37,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:43:37,429 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 2566 transitions. [2022-11-16 12:43:37,436 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 82.7741935483871) internal successors, (2566), 31 states have internal predecessors, (2566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:43:37,445 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 162.0) internal successors, (5184), 32 states have internal predecessors, (5184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:43:37,449 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 162.0) internal successors, (5184), 32 states have internal predecessors, (5184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:43:37,449 INFO L175 Difference]: Start difference. First operand has 155 places, 141 transitions, 398 flow. Second operand 31 states and 2566 transitions. [2022-11-16 12:43:37,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 193 transitions, 816 flow [2022-11-16 12:43:37,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 193 transitions, 775 flow, removed 16 selfloop flow, removed 2 redundant places. [2022-11-16 12:43:37,457 INFO L231 Difference]: Finished difference. Result has 196 places, 178 transitions, 694 flow [2022-11-16 12:43:37,457 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=385, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=694, PETRI_PLACES=196, PETRI_TRANSITIONS=178} [2022-11-16 12:43:37,459 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 58 predicate places. [2022-11-16 12:43:37,459 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 178 transitions, 694 flow [2022-11-16 12:43:37,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 80.953125) internal successors, (5181), 64 states have internal predecessors, (5181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:43:37,462 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:43:37,462 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:43:37,476 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-16 12:43:37,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:43:37,668 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-11-16 12:43:37,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:43:37,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1376533217, now seen corresponding path program 2 times [2022-11-16 12:43:37,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:43:37,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070884001] [2022-11-16 12:43:37,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:43:37,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:43:37,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:43:38,985 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:43:38,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:43:38,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070884001] [2022-11-16 12:43:38,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070884001] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:43:38,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846770585] [2022-11-16 12:43:38,986 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:43:38,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:43:38,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:43:38,999 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:43:39,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 12:43:39,117 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 12:43:39,117 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:43:39,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-16 12:43:39,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:43:39,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:43:39,721 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-16 12:43:39,832 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-11-16 12:43:39,874 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:43:39,875 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:43:39,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [846770585] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:43:39,875 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:43:39,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [18] total 29 [2022-11-16 12:43:39,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998159669] [2022-11-16 12:43:39,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:43:39,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 12:43:39,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:43:39,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 12:43:39,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=797, Unknown=0, NotChecked=0, Total=870 [2022-11-16 12:43:39,879 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 162 [2022-11-16 12:43:39,881 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 178 transitions, 694 flow. Second operand has 13 states, 13 states have (on average 104.38461538461539) internal successors, (1357), 13 states have internal predecessors, (1357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:43:39,881 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:43:39,882 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 162 [2022-11-16 12:43:39,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:43:41,120 INFO L130 PetriNetUnfolder]: 835/2533 cut-off events. [2022-11-16 12:43:41,122 INFO L131 PetriNetUnfolder]: For 1764/1788 co-relation queries the response was YES. [2022-11-16 12:43:41,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6363 conditions, 2533 events. 835/2533 cut-off events. For 1764/1788 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 20399 event pairs, 350 based on Foata normal form. 22/2429 useless extension candidates. Maximal degree in co-relation 6221. Up to 1250 conditions per place. [2022-11-16 12:43:41,154 INFO L137 encePairwiseOnDemand]: 148/162 looper letters, 78 selfloop transitions, 28 changer transitions 1/209 dead transitions. [2022-11-16 12:43:41,155 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 209 transitions, 1036 flow [2022-11-16 12:43:41,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 12:43:41,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-11-16 12:43:41,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1499 transitions. [2022-11-16 12:43:41,160 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6609347442680776 [2022-11-16 12:43:41,160 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1499 transitions. [2022-11-16 12:43:41,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1499 transitions. [2022-11-16 12:43:41,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:43:41,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1499 transitions. [2022-11-16 12:43:41,166 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 107.07142857142857) internal successors, (1499), 14 states have internal predecessors, (1499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:43:41,172 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 162.0) internal successors, (2430), 15 states have internal predecessors, (2430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:43:41,173 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 162.0) internal successors, (2430), 15 states have internal predecessors, (2430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:43:41,174 INFO L175 Difference]: Start difference. First operand has 196 places, 178 transitions, 694 flow. Second operand 14 states and 1499 transitions. [2022-11-16 12:43:41,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 209 transitions, 1036 flow [2022-11-16 12:43:41,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 209 transitions, 1000 flow, removed 6 selfloop flow, removed 12 redundant places. [2022-11-16 12:43:41,185 INFO L231 Difference]: Finished difference. Result has 199 places, 182 transitions, 756 flow [2022-11-16 12:43:41,186 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=658, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=756, PETRI_PLACES=199, PETRI_TRANSITIONS=182} [2022-11-16 12:43:41,187 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 61 predicate places. [2022-11-16 12:43:41,188 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 182 transitions, 756 flow [2022-11-16 12:43:41,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 104.38461538461539) internal successors, (1357), 13 states have internal predecessors, (1357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:43:41,189 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:43:41,189 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:43:41,206 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 12:43:41,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:43:41,406 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-11-16 12:43:41,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:43:41,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1019091045, now seen corresponding path program 3 times [2022-11-16 12:43:41,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:43:41,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054993390] [2022-11-16 12:43:41,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:43:41,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:43:41,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:43:42,528 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:43:42,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:43:42,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054993390] [2022-11-16 12:43:42,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054993390] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:43:42,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1205155237] [2022-11-16 12:43:42,529 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 12:43:42,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:43:42,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:43:42,530 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:43:42,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 12:43:42,650 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-16 12:43:42,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:43:42,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-16 12:43:42,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:43:43,009 INFO L321 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-11-16 12:43:43,009 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-11-16 12:43:43,044 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:43:43,044 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:43:43,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1205155237] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:43:43,045 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:43:43,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [16] total 19 [2022-11-16 12:43:43,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449846079] [2022-11-16 12:43:43,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:43:43,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:43:43,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:43:43,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:43:43,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2022-11-16 12:43:43,048 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 162 [2022-11-16 12:43:43,049 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 182 transitions, 756 flow. Second operand has 6 states, 6 states have (on average 119.16666666666667) internal successors, (715), 6 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:43:43,049 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:43:43,050 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 162 [2022-11-16 12:43:43,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:43:43,937 INFO L130 PetriNetUnfolder]: 943/2853 cut-off events. [2022-11-16 12:43:43,938 INFO L131 PetriNetUnfolder]: For 2676/2700 co-relation queries the response was YES. [2022-11-16 12:43:43,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7399 conditions, 2853 events. 943/2853 cut-off events. For 2676/2700 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 23733 event pairs, 581 based on Foata normal form. 19/2697 useless extension candidates. Maximal degree in co-relation 7270. Up to 1633 conditions per place. [2022-11-16 12:43:43,975 INFO L137 encePairwiseOnDemand]: 156/162 looper letters, 73 selfloop transitions, 16 changer transitions 1/206 dead transitions. [2022-11-16 12:43:43,976 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 206 transitions, 1045 flow [2022-11-16 12:43:43,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:43:43,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 12:43:43,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 750 transitions. [2022-11-16 12:43:43,979 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7716049382716049 [2022-11-16 12:43:43,980 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 750 transitions. [2022-11-16 12:43:43,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 750 transitions. [2022-11-16 12:43:43,981 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:43:43,981 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 750 transitions. [2022-11-16 12:43:43,983 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 125.0) internal successors, (750), 6 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:43:43,986 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 162.0) internal successors, (1134), 7 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:43:43,987 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 162.0) internal successors, (1134), 7 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:43:43,988 INFO L175 Difference]: Start difference. First operand has 199 places, 182 transitions, 756 flow. Second operand 6 states and 750 transitions. [2022-11-16 12:43:43,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 206 transitions, 1045 flow [2022-11-16 12:43:43,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 206 transitions, 1000 flow, removed 5 selfloop flow, removed 10 redundant places. [2022-11-16 12:43:44,004 INFO L231 Difference]: Finished difference. Result has 196 places, 186 transitions, 794 flow [2022-11-16 12:43:44,005 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=713, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=794, PETRI_PLACES=196, PETRI_TRANSITIONS=186} [2022-11-16 12:43:44,005 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 58 predicate places. [2022-11-16 12:43:44,006 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 186 transitions, 794 flow [2022-11-16 12:43:44,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 119.16666666666667) internal successors, (715), 6 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:43:44,007 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:43:44,008 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:43:44,020 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 12:43:44,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-16 12:43:44,215 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-11-16 12:43:44,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:43:44,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1470378367, now seen corresponding path program 1 times [2022-11-16 12:43:44,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:43:44,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675641476] [2022-11-16 12:43:44,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:43:44,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:43:44,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:43:45,914 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:43:45,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:43:45,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675641476] [2022-11-16 12:43:45,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675641476] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:43:45,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540656451] [2022-11-16 12:43:45,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:43:45,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:43:45,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:43:45,917 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:43:45,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 12:43:46,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:43:46,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-16 12:43:46,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:43:46,865 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-16 12:43:48,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:43:48,083 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-16 12:43:48,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:43:48,447 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-16 12:43:48,729 INFO L321 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-11-16 12:43:48,730 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-11-16 12:43:48,795 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:43:48,796 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:43:50,314 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:43:50,315 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2022-11-16 12:43:50,329 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:43:50,330 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 80 treesize of output 76 [2022-11-16 12:43:50,340 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2022-11-16 12:43:50,348 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 42 [2022-11-16 12:43:52,286 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:43:52,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1540656451] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:43:52,287 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:43:52,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 64 [2022-11-16 12:43:52,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033599283] [2022-11-16 12:43:52,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:43:52,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-11-16 12:43:52,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:43:52,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-11-16 12:43:52,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=3923, Unknown=11, NotChecked=0, Total=4160 [2022-11-16 12:43:52,295 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 162 [2022-11-16 12:43:52,300 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 186 transitions, 794 flow. Second operand has 65 states, 65 states have (on average 64.4) internal successors, (4186), 65 states have internal predecessors, (4186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:43:52,300 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:43:52,301 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 162 [2022-11-16 12:43:52,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:43:57,832 INFO L130 PetriNetUnfolder]: 1389/4498 cut-off events. [2022-11-16 12:43:57,833 INFO L131 PetriNetUnfolder]: For 4476/5178 co-relation queries the response was YES. [2022-11-16 12:43:57,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11444 conditions, 4498 events. 1389/4498 cut-off events. For 4476/5178 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 40273 event pairs, 280 based on Foata normal form. 95/4253 useless extension candidates. Maximal degree in co-relation 11285. Up to 1157 conditions per place. [2022-11-16 12:43:57,916 INFO L137 encePairwiseOnDemand]: 126/162 looper letters, 130 selfloop transitions, 80 changer transitions 0/266 dead transitions. [2022-11-16 12:43:57,917 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 266 transitions, 1604 flow [2022-11-16 12:43:57,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-16 12:43:57,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-11-16 12:43:57,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 2454 transitions. [2022-11-16 12:43:57,929 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4094094094094094 [2022-11-16 12:43:57,929 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 2454 transitions. [2022-11-16 12:43:57,930 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 2454 transitions. [2022-11-16 12:43:57,932 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:43:57,932 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 2454 transitions. [2022-11-16 12:43:57,952 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 66.32432432432432) internal successors, (2454), 37 states have internal predecessors, (2454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:43:57,963 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 162.0) internal successors, (6156), 38 states have internal predecessors, (6156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:43:57,966 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 162.0) internal successors, (6156), 38 states have internal predecessors, (6156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:43:57,967 INFO L175 Difference]: Start difference. First operand has 196 places, 186 transitions, 794 flow. Second operand 37 states and 2454 transitions. [2022-11-16 12:43:57,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 266 transitions, 1604 flow [2022-11-16 12:43:57,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 266 transitions, 1582 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-11-16 12:43:57,983 INFO L231 Difference]: Finished difference. Result has 236 places, 227 transitions, 1296 flow [2022-11-16 12:43:57,984 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=776, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=1296, PETRI_PLACES=236, PETRI_TRANSITIONS=227} [2022-11-16 12:43:57,984 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 98 predicate places. [2022-11-16 12:43:57,985 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 227 transitions, 1296 flow [2022-11-16 12:43:57,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 64.4) internal successors, (4186), 65 states have internal predecessors, (4186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:43:57,987 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:43:57,987 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:43:58,000 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 12:43:58,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:43:58,194 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-11-16 12:43:58,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:43:58,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1906633759, now seen corresponding path program 2 times [2022-11-16 12:43:58,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:43:58,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320151736] [2022-11-16 12:43:58,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:43:58,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:43:58,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:43:59,163 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:43:59,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:43:59,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320151736] [2022-11-16 12:43:59,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320151736] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:43:59,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795468296] [2022-11-16 12:43:59,164 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:43:59,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:43:59,165 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:43:59,166 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:43:59,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 12:43:59,297 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 12:43:59,297 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:43:59,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-16 12:43:59,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:43:59,656 INFO L321 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-11-16 12:43:59,657 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-11-16 12:43:59,691 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:43:59,691 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:43:59,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [795468296] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:43:59,691 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:43:59,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [16] total 19 [2022-11-16 12:43:59,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617544333] [2022-11-16 12:43:59,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:43:59,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:43:59,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:43:59,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:43:59,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2022-11-16 12:43:59,696 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 162 [2022-11-16 12:43:59,697 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 227 transitions, 1296 flow. Second operand has 6 states, 6 states have (on average 119.16666666666667) internal successors, (715), 6 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:43:59,697 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:43:59,697 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 162 [2022-11-16 12:43:59,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:44:01,057 INFO L130 PetriNetUnfolder]: 2046/5735 cut-off events. [2022-11-16 12:44:01,057 INFO L131 PetriNetUnfolder]: For 15673/19900 co-relation queries the response was YES. [2022-11-16 12:44:01,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18049 conditions, 5735 events. 2046/5735 cut-off events. For 15673/19900 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 51065 event pairs, 631 based on Foata normal form. 189/5329 useless extension candidates. Maximal degree in co-relation 17895. Up to 3021 conditions per place. [2022-11-16 12:44:01,152 INFO L137 encePairwiseOnDemand]: 152/162 looper letters, 123 selfloop transitions, 30 changer transitions 0/270 dead transitions. [2022-11-16 12:44:01,153 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 270 transitions, 1925 flow [2022-11-16 12:44:01,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:44:01,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 12:44:01,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 754 transitions. [2022-11-16 12:44:01,155 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7757201646090535 [2022-11-16 12:44:01,156 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 754 transitions. [2022-11-16 12:44:01,156 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 754 transitions. [2022-11-16 12:44:01,156 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:44:01,156 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 754 transitions. [2022-11-16 12:44:01,158 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 125.66666666666667) internal successors, (754), 6 states have internal predecessors, (754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:01,160 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 162.0) internal successors, (1134), 7 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:01,161 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 162.0) internal successors, (1134), 7 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:01,161 INFO L175 Difference]: Start difference. First operand has 236 places, 227 transitions, 1296 flow. Second operand 6 states and 754 transitions. [2022-11-16 12:44:01,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 270 transitions, 1925 flow [2022-11-16 12:44:01,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 270 transitions, 1742 flow, removed 65 selfloop flow, removed 24 redundant places. [2022-11-16 12:44:01,384 INFO L231 Difference]: Finished difference. Result has 220 places, 243 transitions, 1381 flow [2022-11-16 12:44:01,385 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=1141, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1381, PETRI_PLACES=220, PETRI_TRANSITIONS=243} [2022-11-16 12:44:01,385 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 82 predicate places. [2022-11-16 12:44:01,386 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 243 transitions, 1381 flow [2022-11-16 12:44:01,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 119.16666666666667) internal successors, (715), 6 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:01,386 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:44:01,386 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:44:01,421 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-16 12:44:01,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:44:01,588 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-11-16 12:44:01,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:44:01,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1731822461, now seen corresponding path program 3 times [2022-11-16 12:44:01,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:44:01,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676593520] [2022-11-16 12:44:01,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:44:01,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:44:01,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:02,818 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:44:02,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:44:02,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676593520] [2022-11-16 12:44:02,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676593520] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:44:02,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190438382] [2022-11-16 12:44:02,819 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 12:44:02,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:44:02,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:44:02,823 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:44:02,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 12:44:02,961 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-16 12:44:02,962 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:44:02,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-16 12:44:02,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:44:03,290 INFO L321 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-11-16 12:44:03,291 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-11-16 12:44:03,317 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:44:03,318 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:44:03,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190438382] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:44:03,318 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:44:03,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [16] total 19 [2022-11-16 12:44:03,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546231564] [2022-11-16 12:44:03,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:44:03,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:44:03,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:44:03,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:44:03,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2022-11-16 12:44:03,321 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 162 [2022-11-16 12:44:03,322 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 243 transitions, 1381 flow. Second operand has 6 states, 6 states have (on average 119.16666666666667) internal successors, (715), 6 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:03,322 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:44:03,323 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 162 [2022-11-16 12:44:03,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:44:04,974 INFO L130 PetriNetUnfolder]: 2422/6716 cut-off events. [2022-11-16 12:44:04,974 INFO L131 PetriNetUnfolder]: For 20216/25299 co-relation queries the response was YES. [2022-11-16 12:44:05,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22303 conditions, 6716 events. 2422/6716 cut-off events. For 20216/25299 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 61808 event pairs, 719 based on Foata normal form. 162/6167 useless extension candidates. Maximal degree in co-relation 22164. Up to 3697 conditions per place. [2022-11-16 12:44:05,076 INFO L137 encePairwiseOnDemand]: 154/162 looper letters, 139 selfloop transitions, 22 changer transitions 0/278 dead transitions. [2022-11-16 12:44:05,077 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 278 transitions, 1977 flow [2022-11-16 12:44:05,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:44:05,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 12:44:05,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 749 transitions. [2022-11-16 12:44:05,080 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7705761316872428 [2022-11-16 12:44:05,080 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 749 transitions. [2022-11-16 12:44:05,080 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 749 transitions. [2022-11-16 12:44:05,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:44:05,081 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 749 transitions. [2022-11-16 12:44:05,083 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 124.83333333333333) internal successors, (749), 6 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:05,085 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 162.0) internal successors, (1134), 7 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:05,086 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 162.0) internal successors, (1134), 7 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:05,086 INFO L175 Difference]: Start difference. First operand has 220 places, 243 transitions, 1381 flow. Second operand 6 states and 749 transitions. [2022-11-16 12:44:05,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 278 transitions, 1977 flow [2022-11-16 12:44:05,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 278 transitions, 1918 flow, removed 24 selfloop flow, removed 1 redundant places. [2022-11-16 12:44:05,175 INFO L231 Difference]: Finished difference. Result has 226 places, 251 transitions, 1471 flow [2022-11-16 12:44:05,175 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=1328, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1471, PETRI_PLACES=226, PETRI_TRANSITIONS=251} [2022-11-16 12:44:05,177 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 88 predicate places. [2022-11-16 12:44:05,177 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 251 transitions, 1471 flow [2022-11-16 12:44:05,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 119.16666666666667) internal successors, (715), 6 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:05,178 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:44:05,178 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:44:05,190 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-16 12:44:05,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-16 12:44:05,385 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-11-16 12:44:05,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:44:05,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1533026883, now seen corresponding path program 4 times [2022-11-16 12:44:05,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:44:05,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666955546] [2022-11-16 12:44:05,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:44:05,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:44:05,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:06,628 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:44:06,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:44:06,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666955546] [2022-11-16 12:44:06,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666955546] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:44:06,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286247618] [2022-11-16 12:44:06,629 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 12:44:06,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:44:06,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:44:06,632 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:44:06,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-16 12:44:06,772 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 12:44:06,772 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:44:06,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-16 12:44:06,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:44:07,515 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-16 12:44:08,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:44:08,510 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-16 12:44:08,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:44:08,736 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-16 12:44:09,044 INFO L321 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-11-16 12:44:09,045 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-11-16 12:44:09,089 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:44:09,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:44:10,294 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:44:10,296 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2022-11-16 12:44:10,310 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:44:10,311 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 158 treesize of output 146 [2022-11-16 12:44:10,322 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 53 [2022-11-16 12:44:10,329 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 94 [2022-11-16 12:44:12,037 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:44:12,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1286247618] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:44:12,037 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:44:12,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 22, 22] total 58 [2022-11-16 12:44:12,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557832018] [2022-11-16 12:44:12,038 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:44:12,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-11-16 12:44:12,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:44:12,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-11-16 12:44:12,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=246, Invalid=3169, Unknown=7, NotChecked=0, Total=3422 [2022-11-16 12:44:12,048 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 162 [2022-11-16 12:44:12,055 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 251 transitions, 1471 flow. Second operand has 59 states, 59 states have (on average 84.08474576271186) internal successors, (4961), 59 states have internal predecessors, (4961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:12,056 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:44:12,056 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 162 [2022-11-16 12:44:12,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:44:17,107 INFO L130 PetriNetUnfolder]: 2489/7340 cut-off events. [2022-11-16 12:44:17,107 INFO L131 PetriNetUnfolder]: For 21621/26012 co-relation queries the response was YES. [2022-11-16 12:44:17,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23989 conditions, 7340 events. 2489/7340 cut-off events. For 21621/26012 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 69915 event pairs, 303 based on Foata normal form. 923/7644 useless extension candidates. Maximal degree in co-relation 23823. Up to 2262 conditions per place. [2022-11-16 12:44:17,195 INFO L137 encePairwiseOnDemand]: 128/162 looper letters, 143 selfloop transitions, 108 changer transitions 0/320 dead transitions. [2022-11-16 12:44:17,195 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 320 transitions, 2492 flow [2022-11-16 12:44:17,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-16 12:44:17,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-16 12:44:17,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 2931 transitions. [2022-11-16 12:44:17,201 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5321350762527233 [2022-11-16 12:44:17,201 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 2931 transitions. [2022-11-16 12:44:17,202 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 2931 transitions. [2022-11-16 12:44:17,203 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:44:17,203 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 2931 transitions. [2022-11-16 12:44:17,209 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 86.20588235294117) internal successors, (2931), 34 states have internal predecessors, (2931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:17,217 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 162.0) internal successors, (5670), 35 states have internal predecessors, (5670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:17,220 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 162.0) internal successors, (5670), 35 states have internal predecessors, (5670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:17,221 INFO L175 Difference]: Start difference. First operand has 226 places, 251 transitions, 1471 flow. Second operand 34 states and 2931 transitions. [2022-11-16 12:44:17,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 320 transitions, 2492 flow [2022-11-16 12:44:17,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 320 transitions, 2442 flow, removed 7 selfloop flow, removed 3 redundant places. [2022-11-16 12:44:17,326 INFO L231 Difference]: Finished difference. Result has 261 places, 285 transitions, 2092 flow [2022-11-16 12:44:17,327 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=1425, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=2092, PETRI_PLACES=261, PETRI_TRANSITIONS=285} [2022-11-16 12:44:17,328 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 123 predicate places. [2022-11-16 12:44:17,328 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 285 transitions, 2092 flow [2022-11-16 12:44:17,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 84.08474576271186) internal successors, (4961), 59 states have internal predecessors, (4961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:17,330 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:44:17,330 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:44:17,347 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-16 12:44:17,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:44:17,537 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-11-16 12:44:17,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:44:17,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1391761032, now seen corresponding path program 1 times [2022-11-16 12:44:17,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:44:17,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13416258] [2022-11-16 12:44:17,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:44:17,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:44:17,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:17,641 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:44:17,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:44:17,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13416258] [2022-11-16 12:44:17,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13416258] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:44:17,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437578216] [2022-11-16 12:44:17,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:44:17,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:44:17,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:44:17,644 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:44:17,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-16 12:44:17,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:17,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 12:44:17,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:44:18,028 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:44:18,028 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:44:18,507 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:44:18,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437578216] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:44:18,508 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:44:18,508 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2022-11-16 12:44:18,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618439824] [2022-11-16 12:44:18,509 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:44:18,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 12:44:18,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:44:18,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 12:44:18,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2022-11-16 12:44:18,514 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 162 [2022-11-16 12:44:18,517 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 285 transitions, 2092 flow. Second operand has 19 states, 19 states have (on average 113.36842105263158) internal successors, (2154), 19 states have internal predecessors, (2154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:18,518 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:44:18,518 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 162 [2022-11-16 12:44:18,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:44:19,737 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([543] L71-->L75: Formula: (and (= |v_thread2Thread1of1ForFork0_~j~0#1_7| (select (select |v_#memory_int_56| v_~q~0.base_48) (+ (* v_~q_front~0_35 4) v_~q~0.offset_48))) (= (+ v_~q_front~0_35 1) v_~q_front~0_34) (= |v_thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1_5| |v_thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1_5|) (= (ite (and (< v_~q_front~0_35 v_~n~0_45) (< v_~q_front~0_35 v_~q_back~0_82) (<= 0 v_~q_front~0_35)) 1 0) |v_thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1_5|) (<= v_~q_front~0_34 2147483647) (not (= |v_thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1_5| 0)) (<= 0 (+ v_~q_front~0_34 2147483648))) InVars {~q_back~0=v_~q_back~0_82, #memory_int=|v_#memory_int_56|, ~q~0.base=v_~q~0.base_48, ~n~0=v_~n~0_45, ~q~0.offset=v_~q~0.offset_48, ~q_front~0=v_~q_front~0_35} OutVars{thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1=|v_thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1_5|, thread2Thread1of1ForFork0_~j~0#1=|v_thread2Thread1of1ForFork0_~j~0#1_7|, ~q_back~0=v_~q_back~0_82, thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1=|v_thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1_5|, #memory_int=|v_#memory_int_56|, thread2Thread1of1ForFork0_#t~mem6#1=|v_thread2Thread1of1ForFork0_#t~mem6#1_5|, thread2Thread1of1ForFork0_#t~post7#1=|v_thread2Thread1of1ForFork0_#t~post7#1_5|, ~q~0.base=v_~q~0.base_48, ~n~0=v_~n~0_45, ~q~0.offset=v_~q~0.offset_48, ~q_front~0=v_~q_front~0_34} AuxVars[] AssignedVars[thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1, thread2Thread1of1ForFork0_~j~0#1, thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1, thread2Thread1of1ForFork0_#t~mem6#1, thread2Thread1of1ForFork0_#t~post7#1, ~q_front~0][255], [Black: 3465#(and (<= ~s~0 0) (exists ((v_~q_back~0_102 Int)) (and (<= ~q_front~0 v_~q_back~0_102) (= (select (select |#memory_int| ~q~0.base) (+ ~q~0.offset (* v_~q_back~0_102 4))) 1) (<= v_~q_back~0_102 ~q_front~0)))), Black: 3472#(and (<= ~s~0 0) (<= |thread2Thread1of1ForFork0_~j~0#1| 1)), Black: 3458#(exists ((v_~q_back~0_102 Int)) (and (<= ~q_front~0 v_~q_back~0_102) (= (select (select |#memory_int| ~q~0.base) (+ ~q~0.offset (* v_~q_back~0_102 4))) 1) (<= v_~q_back~0_102 ~q_front~0))), thread2Thread1of1ForFork0InUse, 632#(<= 1 |ULTIMATE.start_create_fresh_int_array_~i~1#1|), Black: 1810#(and (<= (+ |ULTIMATE.start_create_fresh_int_array_#res#1.base| 2) |ULTIMATE.start_main_~#t2~0#1.base|) (<= (+ ~n~0 ~q_front~0) (+ ~q_back~0 1)) (<= (+ |ULTIMATE.start_create_fresh_int_array_#res#1.base| 2) |ULTIMATE.start_main_~#t1~0#1.base|) (<= (select (select |#memory_int| |ULTIMATE.start_create_fresh_int_array_#res#1.base|) 0) 2147483647) (= ~q_front~0 ~q_back~0) (= 0 |ULTIMATE.start_create_fresh_int_array_#res#1.offset|)), Black: 1793#(and (< |#StackHeapBarrier| |ULTIMATE.start_main_~#t2~0#1.base|) (= (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) 1) (<= ~n~0 |ULTIMATE.start_create_fresh_int_array_~size#1|) (<= (+ |#StackHeapBarrier| 1) |ULTIMATE.start_main_~#t1~0#1.base|) (= |ULTIMATE.start_create_fresh_int_array_~i~1#1| 0) (<= (+ ~n~0 ~q_front~0) (+ |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~q_back~0)) (<= (+ |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| 2) |ULTIMATE.start_main_~#t1~0#1.base|) (<= (+ |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| 2) |ULTIMATE.start_main_~#t2~0#1.base|) (= |ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| 0) (= ~q_front~0 ~q_back~0)), Black: 1808#(and (exists ((|v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| Int)) (and (<= ~n~0 (+ |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| 1)) (<= |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| 0) (<= (select (select |#memory_int| |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ (* |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| 4) |ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 2147483647))) (<= (+ |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| 2) |ULTIMATE.start_main_~#t1~0#1.base|) (<= (+ |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| 2) |ULTIMATE.start_main_~#t2~0#1.base|) (<= (select (select |#memory_int| |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) 0) 2147483647) (= |ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| 0) (= ~q_front~0 ~q_back~0)), Black: 1821#(and (or (= (+ ~q~0.offset (* ~q_front~0 4)) 0) (= ~q~0.offset 0)) (exists ((|v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| Int)) (and (<= ~n~0 (+ |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| 1)) (<= |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| 0) (<= (select (select |#memory_int| ~q~0.base) (+ (* |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| 4) ~q~0.offset)) 2147483647))) (or (<= (select (select |#memory_int| ~q~0.base) (+ ~q~0.offset (* ~q_front~0 4))) 2147483647) (not (= (+ ~q~0.offset (* ~q_front~0 4)) 0))) (= ~q_front~0 ~q_back~0)), Black: 1814#(and (<= (+ 2 ~q~0.base) |ULTIMATE.start_main_~#t2~0#1.base|) (<= (+ 2 ~q~0.base) |ULTIMATE.start_main_~#t1~0#1.base|) (or (= (+ ~q~0.offset (* ~q_front~0 4)) 0) (= ~q~0.offset 0)) (exists ((|v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| Int)) (and (<= ~n~0 (+ |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| 1)) (<= |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| 0) (<= (select (select |#memory_int| ~q~0.base) (+ (* |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| 4) ~q~0.offset)) 2147483647))) (or (<= (select (select |#memory_int| ~q~0.base) (+ ~q~0.offset (* ~q_front~0 4))) 2147483647) (not (= (+ ~q~0.offset (* ~q_front~0 4)) 0))) (= ~q_front~0 ~q_back~0)), Black: 1476#(<= (+ |thread2Thread1of1ForFork0_~j~0#1| ~s~0) 2147483647), Black: 1806#(and (< |#StackHeapBarrier| |ULTIMATE.start_main_~#t2~0#1.base|) (= (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) 1) (<= ~n~0 |ULTIMATE.start_create_fresh_int_array_~size#1|) (<= (+ |#StackHeapBarrier| 1) |ULTIMATE.start_main_~#t1~0#1.base|) (exists ((|v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| Int)) (and (<= |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| 0) (<= |ULTIMATE.start_create_fresh_int_array_~i~1#1| (+ |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| 1)) (<= (select (select |#memory_int| |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ (* |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| 4) |ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 2147483647))) (<= (+ ~n~0 ~q_front~0) (+ |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~q_back~0)) (<= (+ |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| 2) |ULTIMATE.start_main_~#t1~0#1.base|) (<= (+ |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| 2) |ULTIMATE.start_main_~#t2~0#1.base|) (<= (select (select |#memory_int| |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) 0) 2147483647) (= |ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| 0) (= ~q_front~0 ~q_back~0)), Black: 166#(and (= |ULTIMATE.start_create_fresh_int_array_~i~1#1| 0) (= |ULTIMATE.start_create_fresh_int_array_#t~post20#1| 0)), Black: 1798#(and (<= |ULTIMATE.start_create_fresh_int_array_#t~nondet21#1| 2147483647) (< |#StackHeapBarrier| |ULTIMATE.start_main_~#t2~0#1.base|) (= (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) 1) (<= ~n~0 |ULTIMATE.start_create_fresh_int_array_~size#1|) (<= (+ |#StackHeapBarrier| 1) |ULTIMATE.start_main_~#t1~0#1.base|) (= |ULTIMATE.start_create_fresh_int_array_~i~1#1| 0) (<= (select (select |#memory_int| |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ (* |ULTIMATE.start_create_fresh_int_array_~i~1#1| 4) |ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 2147483647) (<= (+ ~n~0 ~q_front~0) (+ |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~q_back~0)) (<= (+ |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| 2) |ULTIMATE.start_main_~#t1~0#1.base|) (<= (+ |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| 2) |ULTIMATE.start_main_~#t2~0#1.base|) (= |ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| 0) (= ~q_front~0 ~q_back~0)), 117#L49-8true, Black: 1796#(and (<= |ULTIMATE.start_create_fresh_int_array_#t~nondet21#1| 2147483647) (< |#StackHeapBarrier| |ULTIMATE.start_main_~#t2~0#1.base|) (= (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) 1) (<= ~n~0 |ULTIMATE.start_create_fresh_int_array_~size#1|) (<= (+ |#StackHeapBarrier| 1) |ULTIMATE.start_main_~#t1~0#1.base|) (= |ULTIMATE.start_create_fresh_int_array_~i~1#1| 0) (<= (+ ~n~0 ~q_front~0) (+ |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~q_back~0)) (<= (+ |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| 2) |ULTIMATE.start_main_~#t1~0#1.base|) (<= (+ |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| 2) |ULTIMATE.start_main_~#t2~0#1.base|) (= |ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| 0) (= ~q_front~0 ~q_back~0)), Black: 2176#(and (<= ~q_back~0 ~q_front~0) (<= ~q_front~0 ~q_back~0)), Black: 1819#(and (exists ((|v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| Int)) (and (<= |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| 0) (<= ~q_front~0 |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10|) (<= (select (select |#memory_int| ~q~0.base) (+ (* |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| 4) ~q~0.offset)) 2147483647))) (= (+ ~q~0.offset (* ~q_front~0 4)) 0) (<= 0 ~q_front~0)), 1148#true, Black: 2475#(and (<= ~s~0 0) (<= |thread2Thread1of1ForFork0_~j~0#1| 0)), Black: 1812#(and (<= (+ |ULTIMATE.start_create_fresh_int_array_#res#1.base| 2) |ULTIMATE.start_main_~#t2~0#1.base|) (<= (+ |ULTIMATE.start_create_fresh_int_array_#res#1.base| 2) |ULTIMATE.start_main_~#t1~0#1.base|) (exists ((|v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| Int)) (and (<= (select (select |#memory_int| |ULTIMATE.start_main_#t~ret12#1.base|) (+ (* |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| 4) |ULTIMATE.start_main_#t~ret12#1.offset|)) 2147483647) (<= ~n~0 (+ |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| 1)) (<= |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| 0))) (<= (+ 2 |ULTIMATE.start_main_#t~ret12#1.base|) |ULTIMATE.start_main_~#t1~0#1.base|) (= |ULTIMATE.start_main_#t~ret12#1.offset| 0) (<= (select (select |#memory_int| |ULTIMATE.start_main_#t~ret12#1.base|) 0) 2147483647) (<= (select (select |#memory_int| |ULTIMATE.start_create_fresh_int_array_#res#1.base|) 0) 2147483647) (= ~q_front~0 ~q_back~0) (= 0 |ULTIMATE.start_create_fresh_int_array_#res#1.offset|) (<= (+ 2 |ULTIMATE.start_main_#t~ret12#1.base|) |ULTIMATE.start_main_~#t2~0#1.base|)), 5069#(and (<= ~n~0 |ULTIMATE.start_create_fresh_int_array_#in~size#1|) (<= ~n~0 |ULTIMATE.start_create_fresh_int_array_~size#1|) (<= |thread1Thread1of1ForFork1_~i~0#1| 1) (<= |ULTIMATE.start_create_fresh_int_array_~i~1#1| 1) (<= 1 ~q_back~0) (<= 1 ~n~0) (<= ~n~0 1)), 175#(<= |ULTIMATE.start_create_fresh_int_array_~i~1#1| 1), 1927#(< |#StackHeapBarrier| |ULTIMATE.start_main_~#t2~0#1.base|), Black: 3778#(and (<= ~s~0 0) (<= |thread2Thread1of1ForFork0_~j~0#1| 1)), Black: 3771#(and (<= ~s~0 0) (exists ((v_~q_back~0_103 Int)) (and (<= v_~q_back~0_103 ~q_front~0) (<= ~q_front~0 v_~q_back~0_103) (= (select (select |#memory_int| ~q~0.base) (+ ~q~0.offset (* v_~q_back~0_103 4))) 1)))), 3000#(or (and (or (< ~q_front~0 (+ ~q_back~0 1)) (< 0 ~q_back~0)) (or (< 0 ~q_back~0) (< 0 (+ ~q_front~0 1))) (or (< |#StackHeapBarrier| (+ |ULTIMATE.start_main_~#t2~0#1.base| 1)) (< 0 ~q_back~0)) (or (< 0 ~q_back~0) (< |#StackHeapBarrier| (+ 1 |ULTIMATE.start_main_~#t1~0#1.base|)))) (not (<= 0 ~q_back~0))), 22#L101-1true, Black: 3131#(and (< |#StackHeapBarrier| |ULTIMATE.start_main_~#t2~0#1.base|) (= (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) 1) (<= ~n~0 |ULTIMATE.start_create_fresh_int_array_~size#1|) (= |ULTIMATE.start_create_fresh_int_array_~i~1#1| 0) (<= (+ ~n~0 ~q_front~0) (+ |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~q_back~0)) (<= (+ |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| 2) |ULTIMATE.start_main_~#t1~0#1.base|) (<= (+ |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| 2) |ULTIMATE.start_main_~#t2~0#1.base|) (< |#StackHeapBarrier| |ULTIMATE.start_main_~#t1~0#1.base|) (= |ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| 0) (= ~q_front~0 ~q_back~0)), Black: 3162#(and (or (and (or (< ~q_front~0 (+ ~q_back~0 1)) (< 0 ~q_back~0)) (or (< 0 ~q_back~0) (< 0 (+ ~q_front~0 1))) (or (< |#StackHeapBarrier| (+ |ULTIMATE.start_main_~#t2~0#1.base| 1)) (< 0 ~q_back~0)) (or (< 0 ~q_back~0) (< |#StackHeapBarrier| (+ 1 |ULTIMATE.start_main_~#t1~0#1.base|)))) (not (<= 0 ~q_back~0))) (<= (+ |thread2Thread1of1ForFork0_~j~0#1| ~s~0) 2147483647)), 120#L75true, 3171#true, Black: 2479#true, Black: 3160#(and (or (and (or (< ~q_front~0 (+ ~q_back~0 1)) (< 0 ~q_back~0)) (or (< 0 ~q_back~0) (< 0 (+ ~q_front~0 1))) (or (< |#StackHeapBarrier| (+ |ULTIMATE.start_main_~#t2~0#1.base| 1)) (< 0 ~q_back~0)) (or (< 0 ~q_back~0) (< |#StackHeapBarrier| (+ 1 |ULTIMATE.start_main_~#t1~0#1.base|)))) (not (<= 0 ~q_back~0))) (= |thread2Thread1of1ForFork0_~j~0#1| 1) (= ~s~0 0)), Black: 865#(and (<= ~n~0 |ULTIMATE.start_create_fresh_int_array_#in~size#1|) (<= ~n~0 |ULTIMATE.start_create_fresh_int_array_~size#1|) (= |ULTIMATE.start_create_fresh_int_array_~i~1#1| 0)), Black: 4445#(and (exists ((|v_ULTIMATE.start_create_fresh_int_array_~i~1#1_18| Int)) (and (<= ~n~0 (+ |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_18| 1)) (<= |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_18| 0) (<= (select (select |#memory_int| ~q~0.base) (+ (* |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_18| 4) ~q~0.offset)) 2147483647))) (= ~q~0.offset 0) (= ~q_front~0 ~q_back~0)), 4447#(and (or (<= ~q_front~0 ~q_back~0) (<= (+ ~q_front~0 1) 0)) (or (not (<= (+ ~q_front~0 1) 0)) (<= ~q_back~0 ~q_front~0)) (or (and (or (< |#StackHeapBarrier| (+ |ULTIMATE.start_main_~#t2~0#1.base| 1)) (< 0 ~q_back~0)) (or (< 0 ~q_back~0) (< |#StackHeapBarrier| (+ 1 |ULTIMATE.start_main_~#t1~0#1.base|)))) (not (<= 0 ~q_back~0)))), Black: 4451#(and (or (<= ~q_front~0 ~q_back~0) (<= (+ ~q_front~0 1) 0)) (<= (+ |thread2Thread1of1ForFork0_~j~0#1| ~s~0) 2147483647) (or (not (<= (+ ~q_front~0 1) 0)) (<= ~q_back~0 ~q_front~0)) (or (and (or (< |#StackHeapBarrier| (+ |ULTIMATE.start_main_~#t2~0#1.base| 1)) (< 0 ~q_back~0)) (or (< 0 ~q_back~0) (< |#StackHeapBarrier| (+ 1 |ULTIMATE.start_main_~#t1~0#1.base|)))) (not (<= 0 ~q_back~0)))), Black: 3796#(and (= (select (select |#memory_int| ~q~0.base) (+ ~q~0.offset (* ~q_front~0 4))) 1) (<= ~q_front~0 0) (< 0 (+ ~q_front~0 1)) (= ~q~0.offset 0)), Black: 4449#(and (or (<= ~q_front~0 ~q_back~0) (<= (+ ~q_front~0 1) 0)) (or (not (<= (+ ~q_front~0 1) 0)) (<= ~q_back~0 ~q_front~0)) (or (and (or (< |#StackHeapBarrier| (+ |ULTIMATE.start_main_~#t2~0#1.base| 1)) (< 0 ~q_back~0)) (or (< 0 ~q_back~0) (< |#StackHeapBarrier| (+ 1 |ULTIMATE.start_main_~#t1~0#1.base|)))) (not (<= 0 ~q_back~0))) (= |thread2Thread1of1ForFork0_~j~0#1| 1) (= ~s~0 0)), Black: 620#(and (<= |ULTIMATE.start_create_fresh_int_array_#t~post20#1| 2147483646) (< |ULTIMATE.start_create_fresh_int_array_~i~1#1| 2147483647)), Black: 171#true, Black: 608#(and (<= |ULTIMATE.start_create_fresh_int_array_~i~1#1| 1) (<= |ULTIMATE.start_create_fresh_int_array_#t~post20#1| 1)), Black: 614#(and (< |ULTIMATE.start_create_fresh_int_array_~i~1#1| 2147483646) (< |ULTIMATE.start_create_fresh_int_array_#t~post20#1| 2147483646)), Black: 1138#(and (= |thread1Thread1of1ForFork1_#t~post1#1| 0) (= |thread1Thread1of1ForFork1_~i~0#1| 0)), Black: 1135#(= |thread1Thread1of1ForFork1_~i~0#1| 0), Black: 1136#(= |thread1Thread1of1ForFork1_#t~post1#1| 0), Black: 1145#(<= ~q_back~0 ~q_front~0), Black: 2166#(and (< |#StackHeapBarrier| |ULTIMATE.start_main_~#t2~0#1.base|) (<= (+ 2 ~q~0.base) |ULTIMATE.start_main_~#t2~0#1.base|) (= (select (select |#memory_int| ~q~0.base) (+ ~q~0.offset (* ~q_front~0 4))) 0)), Black: 2170#(and (< |#StackHeapBarrier| |ULTIMATE.start_main_~#t2~0#1.base|) (<= ~s~0 0) (<= |thread2Thread1of1ForFork0_~j~0#1| 0))]) [2022-11-16 12:44:19,738 INFO L383 tUnfolder$Statistics]: this new event has 118 ancestors and is cut-off event [2022-11-16 12:44:19,739 INFO L386 tUnfolder$Statistics]: existing Event has 111 ancestors and is cut-off event [2022-11-16 12:44:19,739 INFO L386 tUnfolder$Statistics]: existing Event has 111 ancestors and is cut-off event [2022-11-16 12:44:19,739 INFO L386 tUnfolder$Statistics]: existing Event has 111 ancestors and is cut-off event [2022-11-16 12:44:19,740 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([543] L71-->L75: Formula: (and (= |v_thread2Thread1of1ForFork0_~j~0#1_7| (select (select |v_#memory_int_56| v_~q~0.base_48) (+ (* v_~q_front~0_35 4) v_~q~0.offset_48))) (= (+ v_~q_front~0_35 1) v_~q_front~0_34) (= |v_thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1_5| |v_thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1_5|) (= (ite (and (< v_~q_front~0_35 v_~n~0_45) (< v_~q_front~0_35 v_~q_back~0_82) (<= 0 v_~q_front~0_35)) 1 0) |v_thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1_5|) (<= v_~q_front~0_34 2147483647) (not (= |v_thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1_5| 0)) (<= 0 (+ v_~q_front~0_34 2147483648))) InVars {~q_back~0=v_~q_back~0_82, #memory_int=|v_#memory_int_56|, ~q~0.base=v_~q~0.base_48, ~n~0=v_~n~0_45, ~q~0.offset=v_~q~0.offset_48, ~q_front~0=v_~q_front~0_35} OutVars{thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1=|v_thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1_5|, thread2Thread1of1ForFork0_~j~0#1=|v_thread2Thread1of1ForFork0_~j~0#1_7|, ~q_back~0=v_~q_back~0_82, thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1=|v_thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1_5|, #memory_int=|v_#memory_int_56|, thread2Thread1of1ForFork0_#t~mem6#1=|v_thread2Thread1of1ForFork0_#t~mem6#1_5|, thread2Thread1of1ForFork0_#t~post7#1=|v_thread2Thread1of1ForFork0_#t~post7#1_5|, ~q~0.base=v_~q~0.base_48, ~n~0=v_~n~0_45, ~q~0.offset=v_~q~0.offset_48, ~q_front~0=v_~q_front~0_34} AuxVars[] AssignedVars[thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1, thread2Thread1of1ForFork0_~j~0#1, thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1, thread2Thread1of1ForFork0_#t~mem6#1, thread2Thread1of1ForFork0_#t~post7#1, ~q_front~0][255], [Black: 3465#(and (<= ~s~0 0) (exists ((v_~q_back~0_102 Int)) (and (<= ~q_front~0 v_~q_back~0_102) (= (select (select |#memory_int| ~q~0.base) (+ ~q~0.offset (* v_~q_back~0_102 4))) 1) (<= v_~q_back~0_102 ~q_front~0)))), Black: 3472#(and (<= ~s~0 0) (<= |thread2Thread1of1ForFork0_~j~0#1| 1)), Black: 3458#(exists ((v_~q_back~0_102 Int)) (and (<= ~q_front~0 v_~q_back~0_102) (= (select (select |#memory_int| ~q~0.base) (+ ~q~0.offset (* v_~q_back~0_102 4))) 1) (<= v_~q_back~0_102 ~q_front~0))), thread2Thread1of1ForFork0InUse, 632#(<= 1 |ULTIMATE.start_create_fresh_int_array_~i~1#1|), Black: 1810#(and (<= (+ |ULTIMATE.start_create_fresh_int_array_#res#1.base| 2) |ULTIMATE.start_main_~#t2~0#1.base|) (<= (+ ~n~0 ~q_front~0) (+ ~q_back~0 1)) (<= (+ |ULTIMATE.start_create_fresh_int_array_#res#1.base| 2) |ULTIMATE.start_main_~#t1~0#1.base|) (<= (select (select |#memory_int| |ULTIMATE.start_create_fresh_int_array_#res#1.base|) 0) 2147483647) (= ~q_front~0 ~q_back~0) (= 0 |ULTIMATE.start_create_fresh_int_array_#res#1.offset|)), Black: 1793#(and (< |#StackHeapBarrier| |ULTIMATE.start_main_~#t2~0#1.base|) (= (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) 1) (<= ~n~0 |ULTIMATE.start_create_fresh_int_array_~size#1|) (<= (+ |#StackHeapBarrier| 1) |ULTIMATE.start_main_~#t1~0#1.base|) (= |ULTIMATE.start_create_fresh_int_array_~i~1#1| 0) (<= (+ ~n~0 ~q_front~0) (+ |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~q_back~0)) (<= (+ |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| 2) |ULTIMATE.start_main_~#t1~0#1.base|) (<= (+ |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| 2) |ULTIMATE.start_main_~#t2~0#1.base|) (= |ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| 0) (= ~q_front~0 ~q_back~0)), Black: 1808#(and (exists ((|v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| Int)) (and (<= ~n~0 (+ |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| 1)) (<= |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| 0) (<= (select (select |#memory_int| |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ (* |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| 4) |ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 2147483647))) (<= (+ |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| 2) |ULTIMATE.start_main_~#t1~0#1.base|) (<= (+ |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| 2) |ULTIMATE.start_main_~#t2~0#1.base|) (<= (select (select |#memory_int| |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) 0) 2147483647) (= |ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| 0) (= ~q_front~0 ~q_back~0)), Black: 1821#(and (or (= (+ ~q~0.offset (* ~q_front~0 4)) 0) (= ~q~0.offset 0)) (exists ((|v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| Int)) (and (<= ~n~0 (+ |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| 1)) (<= |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| 0) (<= (select (select |#memory_int| ~q~0.base) (+ (* |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| 4) ~q~0.offset)) 2147483647))) (or (<= (select (select |#memory_int| ~q~0.base) (+ ~q~0.offset (* ~q_front~0 4))) 2147483647) (not (= (+ ~q~0.offset (* ~q_front~0 4)) 0))) (= ~q_front~0 ~q_back~0)), Black: 1814#(and (<= (+ 2 ~q~0.base) |ULTIMATE.start_main_~#t2~0#1.base|) (<= (+ 2 ~q~0.base) |ULTIMATE.start_main_~#t1~0#1.base|) (or (= (+ ~q~0.offset (* ~q_front~0 4)) 0) (= ~q~0.offset 0)) (exists ((|v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| Int)) (and (<= ~n~0 (+ |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| 1)) (<= |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| 0) (<= (select (select |#memory_int| ~q~0.base) (+ (* |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| 4) ~q~0.offset)) 2147483647))) (or (<= (select (select |#memory_int| ~q~0.base) (+ ~q~0.offset (* ~q_front~0 4))) 2147483647) (not (= (+ ~q~0.offset (* ~q_front~0 4)) 0))) (= ~q_front~0 ~q_back~0)), Black: 1476#(<= (+ |thread2Thread1of1ForFork0_~j~0#1| ~s~0) 2147483647), Black: 1806#(and (< |#StackHeapBarrier| |ULTIMATE.start_main_~#t2~0#1.base|) (= (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) 1) (<= ~n~0 |ULTIMATE.start_create_fresh_int_array_~size#1|) (<= (+ |#StackHeapBarrier| 1) |ULTIMATE.start_main_~#t1~0#1.base|) (exists ((|v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| Int)) (and (<= |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| 0) (<= |ULTIMATE.start_create_fresh_int_array_~i~1#1| (+ |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| 1)) (<= (select (select |#memory_int| |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ (* |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| 4) |ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 2147483647))) (<= (+ ~n~0 ~q_front~0) (+ |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~q_back~0)) (<= (+ |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| 2) |ULTIMATE.start_main_~#t1~0#1.base|) (<= (+ |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| 2) |ULTIMATE.start_main_~#t2~0#1.base|) (<= (select (select |#memory_int| |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) 0) 2147483647) (= |ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| 0) (= ~q_front~0 ~q_back~0)), Black: 166#(and (= |ULTIMATE.start_create_fresh_int_array_~i~1#1| 0) (= |ULTIMATE.start_create_fresh_int_array_#t~post20#1| 0)), Black: 1798#(and (<= |ULTIMATE.start_create_fresh_int_array_#t~nondet21#1| 2147483647) (< |#StackHeapBarrier| |ULTIMATE.start_main_~#t2~0#1.base|) (= (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) 1) (<= ~n~0 |ULTIMATE.start_create_fresh_int_array_~size#1|) (<= (+ |#StackHeapBarrier| 1) |ULTIMATE.start_main_~#t1~0#1.base|) (= |ULTIMATE.start_create_fresh_int_array_~i~1#1| 0) (<= (select (select |#memory_int| |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ (* |ULTIMATE.start_create_fresh_int_array_~i~1#1| 4) |ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 2147483647) (<= (+ ~n~0 ~q_front~0) (+ |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~q_back~0)) (<= (+ |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| 2) |ULTIMATE.start_main_~#t1~0#1.base|) (<= (+ |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| 2) |ULTIMATE.start_main_~#t2~0#1.base|) (= |ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| 0) (= ~q_front~0 ~q_back~0)), Black: 1796#(and (<= |ULTIMATE.start_create_fresh_int_array_#t~nondet21#1| 2147483647) (< |#StackHeapBarrier| |ULTIMATE.start_main_~#t2~0#1.base|) (= (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) 1) (<= ~n~0 |ULTIMATE.start_create_fresh_int_array_~size#1|) (<= (+ |#StackHeapBarrier| 1) |ULTIMATE.start_main_~#t1~0#1.base|) (= |ULTIMATE.start_create_fresh_int_array_~i~1#1| 0) (<= (+ ~n~0 ~q_front~0) (+ |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~q_back~0)) (<= (+ |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| 2) |ULTIMATE.start_main_~#t1~0#1.base|) (<= (+ |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| 2) |ULTIMATE.start_main_~#t2~0#1.base|) (= |ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| 0) (= ~q_front~0 ~q_back~0)), Black: 2176#(and (<= ~q_back~0 ~q_front~0) (<= ~q_front~0 ~q_back~0)), Black: 1819#(and (exists ((|v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| Int)) (and (<= |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| 0) (<= ~q_front~0 |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10|) (<= (select (select |#memory_int| ~q~0.base) (+ (* |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| 4) ~q~0.offset)) 2147483647))) (= (+ ~q~0.offset (* ~q_front~0 4)) 0) (<= 0 ~q_front~0)), 1148#true, Black: 2475#(and (<= ~s~0 0) (<= |thread2Thread1of1ForFork0_~j~0#1| 0)), Black: 1812#(and (<= (+ |ULTIMATE.start_create_fresh_int_array_#res#1.base| 2) |ULTIMATE.start_main_~#t2~0#1.base|) (<= (+ |ULTIMATE.start_create_fresh_int_array_#res#1.base| 2) |ULTIMATE.start_main_~#t1~0#1.base|) (exists ((|v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| Int)) (and (<= (select (select |#memory_int| |ULTIMATE.start_main_#t~ret12#1.base|) (+ (* |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| 4) |ULTIMATE.start_main_#t~ret12#1.offset|)) 2147483647) (<= ~n~0 (+ |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| 1)) (<= |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| 0))) (<= (+ 2 |ULTIMATE.start_main_#t~ret12#1.base|) |ULTIMATE.start_main_~#t1~0#1.base|) (= |ULTIMATE.start_main_#t~ret12#1.offset| 0) (<= (select (select |#memory_int| |ULTIMATE.start_main_#t~ret12#1.base|) 0) 2147483647) (<= (select (select |#memory_int| |ULTIMATE.start_create_fresh_int_array_#res#1.base|) 0) 2147483647) (= ~q_front~0 ~q_back~0) (= 0 |ULTIMATE.start_create_fresh_int_array_#res#1.offset|) (<= (+ 2 |ULTIMATE.start_main_#t~ret12#1.base|) |ULTIMATE.start_main_~#t2~0#1.base|)), 5069#(and (<= ~n~0 |ULTIMATE.start_create_fresh_int_array_#in~size#1|) (<= ~n~0 |ULTIMATE.start_create_fresh_int_array_~size#1|) (<= |thread1Thread1of1ForFork1_~i~0#1| 1) (<= |ULTIMATE.start_create_fresh_int_array_~i~1#1| 1) (<= 1 ~q_back~0) (<= 1 ~n~0) (<= ~n~0 1)), 175#(<= |ULTIMATE.start_create_fresh_int_array_~i~1#1| 1), 1927#(< |#StackHeapBarrier| |ULTIMATE.start_main_~#t2~0#1.base|), Black: 3778#(and (<= ~s~0 0) (<= |thread2Thread1of1ForFork0_~j~0#1| 1)), Black: 3771#(and (<= ~s~0 0) (exists ((v_~q_back~0_103 Int)) (and (<= v_~q_back~0_103 ~q_front~0) (<= ~q_front~0 v_~q_back~0_103) (= (select (select |#memory_int| ~q~0.base) (+ ~q~0.offset (* v_~q_back~0_103 4))) 1)))), 3000#(or (and (or (< ~q_front~0 (+ ~q_back~0 1)) (< 0 ~q_back~0)) (or (< 0 ~q_back~0) (< 0 (+ ~q_front~0 1))) (or (< |#StackHeapBarrier| (+ |ULTIMATE.start_main_~#t2~0#1.base| 1)) (< 0 ~q_back~0)) (or (< 0 ~q_back~0) (< |#StackHeapBarrier| (+ 1 |ULTIMATE.start_main_~#t1~0#1.base|)))) (not (<= 0 ~q_back~0))), 22#L101-1true, Black: 3131#(and (< |#StackHeapBarrier| |ULTIMATE.start_main_~#t2~0#1.base|) (= (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) 1) (<= ~n~0 |ULTIMATE.start_create_fresh_int_array_~size#1|) (= |ULTIMATE.start_create_fresh_int_array_~i~1#1| 0) (<= (+ ~n~0 ~q_front~0) (+ |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~q_back~0)) (<= (+ |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| 2) |ULTIMATE.start_main_~#t1~0#1.base|) (<= (+ |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| 2) |ULTIMATE.start_main_~#t2~0#1.base|) (< |#StackHeapBarrier| |ULTIMATE.start_main_~#t1~0#1.base|) (= |ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| 0) (= ~q_front~0 ~q_back~0)), Black: 3162#(and (or (and (or (< ~q_front~0 (+ ~q_back~0 1)) (< 0 ~q_back~0)) (or (< 0 ~q_back~0) (< 0 (+ ~q_front~0 1))) (or (< |#StackHeapBarrier| (+ |ULTIMATE.start_main_~#t2~0#1.base| 1)) (< 0 ~q_back~0)) (or (< 0 ~q_back~0) (< |#StackHeapBarrier| (+ 1 |ULTIMATE.start_main_~#t1~0#1.base|)))) (not (<= 0 ~q_back~0))) (<= (+ |thread2Thread1of1ForFork0_~j~0#1| ~s~0) 2147483647)), 120#L75true, 3171#true, Black: 2479#true, Black: 3160#(and (or (and (or (< ~q_front~0 (+ ~q_back~0 1)) (< 0 ~q_back~0)) (or (< 0 ~q_back~0) (< 0 (+ ~q_front~0 1))) (or (< |#StackHeapBarrier| (+ |ULTIMATE.start_main_~#t2~0#1.base| 1)) (< 0 ~q_back~0)) (or (< 0 ~q_back~0) (< |#StackHeapBarrier| (+ 1 |ULTIMATE.start_main_~#t1~0#1.base|)))) (not (<= 0 ~q_back~0))) (= |thread2Thread1of1ForFork0_~j~0#1| 1) (= ~s~0 0)), Black: 865#(and (<= ~n~0 |ULTIMATE.start_create_fresh_int_array_#in~size#1|) (<= ~n~0 |ULTIMATE.start_create_fresh_int_array_~size#1|) (= |ULTIMATE.start_create_fresh_int_array_~i~1#1| 0)), Black: 4445#(and (exists ((|v_ULTIMATE.start_create_fresh_int_array_~i~1#1_18| Int)) (and (<= ~n~0 (+ |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_18| 1)) (<= |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_18| 0) (<= (select (select |#memory_int| ~q~0.base) (+ (* |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_18| 4) ~q~0.offset)) 2147483647))) (= ~q~0.offset 0) (= ~q_front~0 ~q_back~0)), 4447#(and (or (<= ~q_front~0 ~q_back~0) (<= (+ ~q_front~0 1) 0)) (or (not (<= (+ ~q_front~0 1) 0)) (<= ~q_back~0 ~q_front~0)) (or (and (or (< |#StackHeapBarrier| (+ |ULTIMATE.start_main_~#t2~0#1.base| 1)) (< 0 ~q_back~0)) (or (< 0 ~q_back~0) (< |#StackHeapBarrier| (+ 1 |ULTIMATE.start_main_~#t1~0#1.base|)))) (not (<= 0 ~q_back~0)))), Black: 4451#(and (or (<= ~q_front~0 ~q_back~0) (<= (+ ~q_front~0 1) 0)) (<= (+ |thread2Thread1of1ForFork0_~j~0#1| ~s~0) 2147483647) (or (not (<= (+ ~q_front~0 1) 0)) (<= ~q_back~0 ~q_front~0)) (or (and (or (< |#StackHeapBarrier| (+ |ULTIMATE.start_main_~#t2~0#1.base| 1)) (< 0 ~q_back~0)) (or (< 0 ~q_back~0) (< |#StackHeapBarrier| (+ 1 |ULTIMATE.start_main_~#t1~0#1.base|)))) (not (<= 0 ~q_back~0)))), Black: 3796#(and (= (select (select |#memory_int| ~q~0.base) (+ ~q~0.offset (* ~q_front~0 4))) 1) (<= ~q_front~0 0) (< 0 (+ ~q_front~0 1)) (= ~q~0.offset 0)), Black: 4449#(and (or (<= ~q_front~0 ~q_back~0) (<= (+ ~q_front~0 1) 0)) (or (not (<= (+ ~q_front~0 1) 0)) (<= ~q_back~0 ~q_front~0)) (or (and (or (< |#StackHeapBarrier| (+ |ULTIMATE.start_main_~#t2~0#1.base| 1)) (< 0 ~q_back~0)) (or (< 0 ~q_back~0) (< |#StackHeapBarrier| (+ 1 |ULTIMATE.start_main_~#t1~0#1.base|)))) (not (<= 0 ~q_back~0))) (= |thread2Thread1of1ForFork0_~j~0#1| 1) (= ~s~0 0)), Black: 620#(and (<= |ULTIMATE.start_create_fresh_int_array_#t~post20#1| 2147483646) (< |ULTIMATE.start_create_fresh_int_array_~i~1#1| 2147483647)), Black: 171#true, Black: 608#(and (<= |ULTIMATE.start_create_fresh_int_array_~i~1#1| 1) (<= |ULTIMATE.start_create_fresh_int_array_#t~post20#1| 1)), Black: 614#(and (< |ULTIMATE.start_create_fresh_int_array_~i~1#1| 2147483646) (< |ULTIMATE.start_create_fresh_int_array_#t~post20#1| 2147483646)), Black: 1138#(and (= |thread1Thread1of1ForFork1_#t~post1#1| 0) (= |thread1Thread1of1ForFork1_~i~0#1| 0)), Black: 1135#(= |thread1Thread1of1ForFork1_~i~0#1| 0), Black: 1136#(= |thread1Thread1of1ForFork1_#t~post1#1| 0), Black: 1145#(<= ~q_back~0 ~q_front~0), Black: 2166#(and (< |#StackHeapBarrier| |ULTIMATE.start_main_~#t2~0#1.base|) (<= (+ 2 ~q~0.base) |ULTIMATE.start_main_~#t2~0#1.base|) (= (select (select |#memory_int| ~q~0.base) (+ ~q~0.offset (* ~q_front~0 4))) 0)), Black: 2170#(and (< |#StackHeapBarrier| |ULTIMATE.start_main_~#t2~0#1.base|) (<= ~s~0 0) (<= |thread2Thread1of1ForFork0_~j~0#1| 0)), 55#L50true]) [2022-11-16 12:44:19,741 INFO L383 tUnfolder$Statistics]: this new event has 118 ancestors and is cut-off event [2022-11-16 12:44:19,741 INFO L386 tUnfolder$Statistics]: existing Event has 111 ancestors and is cut-off event [2022-11-16 12:44:19,742 INFO L386 tUnfolder$Statistics]: existing Event has 111 ancestors and is cut-off event [2022-11-16 12:44:19,742 INFO L386 tUnfolder$Statistics]: existing Event has 111 ancestors and is cut-off event [2022-11-16 12:44:19,742 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([543] L71-->L75: Formula: (and (= |v_thread2Thread1of1ForFork0_~j~0#1_7| (select (select |v_#memory_int_56| v_~q~0.base_48) (+ (* v_~q_front~0_35 4) v_~q~0.offset_48))) (= (+ v_~q_front~0_35 1) v_~q_front~0_34) (= |v_thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1_5| |v_thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1_5|) (= (ite (and (< v_~q_front~0_35 v_~n~0_45) (< v_~q_front~0_35 v_~q_back~0_82) (<= 0 v_~q_front~0_35)) 1 0) |v_thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1_5|) (<= v_~q_front~0_34 2147483647) (not (= |v_thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1_5| 0)) (<= 0 (+ v_~q_front~0_34 2147483648))) InVars {~q_back~0=v_~q_back~0_82, #memory_int=|v_#memory_int_56|, ~q~0.base=v_~q~0.base_48, ~n~0=v_~n~0_45, ~q~0.offset=v_~q~0.offset_48, ~q_front~0=v_~q_front~0_35} OutVars{thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1=|v_thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1_5|, thread2Thread1of1ForFork0_~j~0#1=|v_thread2Thread1of1ForFork0_~j~0#1_7|, ~q_back~0=v_~q_back~0_82, thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1=|v_thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1_5|, #memory_int=|v_#memory_int_56|, thread2Thread1of1ForFork0_#t~mem6#1=|v_thread2Thread1of1ForFork0_#t~mem6#1_5|, thread2Thread1of1ForFork0_#t~post7#1=|v_thread2Thread1of1ForFork0_#t~post7#1_5|, ~q~0.base=v_~q~0.base_48, ~n~0=v_~n~0_45, ~q~0.offset=v_~q~0.offset_48, ~q_front~0=v_~q_front~0_34} AuxVars[] AssignedVars[thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1, thread2Thread1of1ForFork0_~j~0#1, thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1, thread2Thread1of1ForFork0_#t~mem6#1, thread2Thread1of1ForFork0_#t~post7#1, ~q_front~0][255], [30#L49-7true, Black: 3465#(and (<= ~s~0 0) (exists ((v_~q_back~0_102 Int)) (and (<= ~q_front~0 v_~q_back~0_102) (= (select (select |#memory_int| ~q~0.base) (+ ~q~0.offset (* v_~q_back~0_102 4))) 1) (<= v_~q_back~0_102 ~q_front~0)))), Black: 3472#(and (<= ~s~0 0) (<= |thread2Thread1of1ForFork0_~j~0#1| 1)), Black: 3458#(exists ((v_~q_back~0_102 Int)) (and (<= ~q_front~0 v_~q_back~0_102) (= (select (select |#memory_int| ~q~0.base) (+ ~q~0.offset (* v_~q_back~0_102 4))) 1) (<= v_~q_back~0_102 ~q_front~0))), thread2Thread1of1ForFork0InUse, 632#(<= 1 |ULTIMATE.start_create_fresh_int_array_~i~1#1|), Black: 1810#(and (<= (+ |ULTIMATE.start_create_fresh_int_array_#res#1.base| 2) |ULTIMATE.start_main_~#t2~0#1.base|) (<= (+ ~n~0 ~q_front~0) (+ ~q_back~0 1)) (<= (+ 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~q~0.offset (* ~q_front~0 4))) 2147483647) (not (= (+ ~q~0.offset (* ~q_front~0 4)) 0))) (= ~q_front~0 ~q_back~0)), Black: 1476#(<= (+ |thread2Thread1of1ForFork0_~j~0#1| ~s~0) 2147483647), Black: 1806#(and (< |#StackHeapBarrier| |ULTIMATE.start_main_~#t2~0#1.base|) (= (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) 1) (<= ~n~0 |ULTIMATE.start_create_fresh_int_array_~size#1|) (<= (+ |#StackHeapBarrier| 1) |ULTIMATE.start_main_~#t1~0#1.base|) (exists ((|v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| Int)) (and (<= |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| 0) (<= |ULTIMATE.start_create_fresh_int_array_~i~1#1| (+ |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| 1)) (<= (select (select |#memory_int| |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) (+ (* |v_ULTIMATE.start_create_fresh_int_array_~i~1#1_10| 4) |ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) 2147483647))) (<= (+ ~n~0 ~q_front~0) (+ |ULTIMATE.start_create_fresh_int_array_#in~size#1| 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|ULTIMATE.start_main_~#t1~0#1.base|)))) (not (<= 0 ~q_back~0))), 22#L101-1true, Black: 3131#(and (< |#StackHeapBarrier| |ULTIMATE.start_main_~#t2~0#1.base|) (= (select |#valid| |ULTIMATE.start_main_~#t2~0#1.base|) 1) (<= ~n~0 |ULTIMATE.start_create_fresh_int_array_~size#1|) (= |ULTIMATE.start_create_fresh_int_array_~i~1#1| 0) (<= (+ ~n~0 ~q_front~0) (+ |ULTIMATE.start_create_fresh_int_array_#in~size#1| ~q_back~0)) (<= (+ |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| 2) |ULTIMATE.start_main_~#t1~0#1.base|) (<= (+ |ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| 2) |ULTIMATE.start_main_~#t2~0#1.base|) (< |#StackHeapBarrier| |ULTIMATE.start_main_~#t1~0#1.base|) (= |ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| 0) (= ~q_front~0 ~q_back~0)), Black: 3162#(and (or (and (or (< ~q_front~0 (+ ~q_back~0 1)) (< 0 ~q_back~0)) (or (< 0 ~q_back~0) (< 0 (+ ~q_front~0 1))) (or (< |#StackHeapBarrier| (+ |ULTIMATE.start_main_~#t2~0#1.base| 1)) (< 0 ~q_back~0)) (or (< 0 ~q_back~0) (< 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Black: 1135#(= |thread1Thread1of1ForFork1_~i~0#1| 0), Black: 1136#(= |thread1Thread1of1ForFork1_#t~post1#1| 0), Black: 1145#(<= ~q_back~0 ~q_front~0), Black: 2166#(and (< |#StackHeapBarrier| |ULTIMATE.start_main_~#t2~0#1.base|) (<= (+ 2 ~q~0.base) |ULTIMATE.start_main_~#t2~0#1.base|) (= (select (select |#memory_int| ~q~0.base) (+ ~q~0.offset (* ~q_front~0 4))) 0)), Black: 2170#(and (< |#StackHeapBarrier| |ULTIMATE.start_main_~#t2~0#1.base|) (<= ~s~0 0) (<= |thread2Thread1of1ForFork0_~j~0#1| 0))]) [2022-11-16 12:44:19,743 INFO L383 tUnfolder$Statistics]: this new event has 117 ancestors and is cut-off event [2022-11-16 12:44:19,743 INFO L386 tUnfolder$Statistics]: existing Event has 110 ancestors and is cut-off event [2022-11-16 12:44:19,744 INFO L386 tUnfolder$Statistics]: existing Event has 110 ancestors and is cut-off event [2022-11-16 12:44:19,744 INFO L386 tUnfolder$Statistics]: existing Event has 110 ancestors and is cut-off event [2022-11-16 12:44:21,162 INFO L130 PetriNetUnfolder]: 1904/7524 cut-off events. [2022-11-16 12:44:21,162 INFO L131 PetriNetUnfolder]: For 43143/44550 co-relation queries the response was YES. [2022-11-16 12:44:21,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28622 conditions, 7524 events. 1904/7524 cut-off events. For 43143/44550 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 78014 event pairs, 321 based on Foata normal form. 549/7551 useless extension candidates. Maximal degree in co-relation 28450. Up to 1781 conditions per place. [2022-11-16 12:44:21,256 INFO L137 encePairwiseOnDemand]: 144/162 looper letters, 173 selfloop transitions, 38 changer transitions 0/352 dead transitions. [2022-11-16 12:44:21,257 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 352 transitions, 3179 flow [2022-11-16 12:44:21,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-16 12:44:21,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-11-16 12:44:21,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2508 transitions. [2022-11-16 12:44:21,263 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7037037037037037 [2022-11-16 12:44:21,264 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2508 transitions. [2022-11-16 12:44:21,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2508 transitions. [2022-11-16 12:44:21,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:44:21,265 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2508 transitions. [2022-11-16 12:44:21,270 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 114.0) internal successors, (2508), 22 states have internal predecessors, (2508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:21,275 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 162.0) internal successors, (3726), 23 states have internal predecessors, (3726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:21,277 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 162.0) internal successors, (3726), 23 states have internal predecessors, (3726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:21,277 INFO L175 Difference]: Start difference. First operand has 261 places, 285 transitions, 2092 flow. Second operand 22 states and 2508 transitions. [2022-11-16 12:44:21,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 352 transitions, 3179 flow [2022-11-16 12:44:21,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 352 transitions, 3032 flow, removed 30 selfloop flow, removed 25 redundant places. [2022-11-16 12:44:21,530 INFO L231 Difference]: Finished difference. Result has 258 places, 253 transitions, 1770 flow [2022-11-16 12:44:21,531 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=1536, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1770, PETRI_PLACES=258, PETRI_TRANSITIONS=253} [2022-11-16 12:44:21,532 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 120 predicate places. [2022-11-16 12:44:21,532 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 253 transitions, 1770 flow [2022-11-16 12:44:21,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 113.36842105263158) internal successors, (2154), 19 states have internal predecessors, (2154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:21,533 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:44:21,533 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 12:44:21,552 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-16 12:44:21,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-16 12:44:21,739 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-11-16 12:44:21,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:44:21,740 INFO L85 PathProgramCache]: Analyzing trace with hash -277142655, now seen corresponding path program 1 times [2022-11-16 12:44:21,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:44:21,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201584032] [2022-11-16 12:44:21,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:44:21,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:44:21,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:23,632 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:44:23,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:44:23,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201584032] [2022-11-16 12:44:23,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201584032] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:44:23,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [296499122] [2022-11-16 12:44:23,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:44:23,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:44:23,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:44:23,635 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:44:23,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-16 12:44:23,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:23,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-16 12:44:23,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:44:24,525 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-16 12:44:25,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:44:25,550 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-11-16 12:44:25,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:44:25,817 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-11-16 12:44:26,019 INFO L321 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-11-16 12:44:26,019 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2022-11-16 12:44:26,074 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:44:26,075 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:44:26,243 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_327 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_327) c_~q~0.base) (+ (* c_~q_front~0 4) c_~q~0.offset)) 2147483649))) is different from false [2022-11-16 12:44:27,214 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:44:27,215 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2022-11-16 12:44:27,227 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:44:27,228 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 88 treesize of output 84 [2022-11-16 12:44:27,241 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 56 [2022-11-16 12:44:27,253 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 24 [2022-11-16 12:44:29,199 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:44:29,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [296499122] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:44:29,200 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:44:29,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 63 [2022-11-16 12:44:29,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570899746] [2022-11-16 12:44:29,200 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:44:29,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-11-16 12:44:29,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:44:29,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-11-16 12:44:29,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=3652, Unknown=4, NotChecked=122, Total=4032 [2022-11-16 12:44:29,208 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 162 [2022-11-16 12:44:29,214 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 253 transitions, 1770 flow. Second operand has 64 states, 64 states have (on average 81.0) internal successors, (5184), 64 states have internal predecessors, (5184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:29,214 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:44:29,214 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 162 [2022-11-16 12:44:29,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:44:35,280 INFO L130 PetriNetUnfolder]: 2648/8866 cut-off events. [2022-11-16 12:44:35,280 INFO L131 PetriNetUnfolder]: For 38137/41476 co-relation queries the response was YES. [2022-11-16 12:44:35,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32171 conditions, 8866 events. 2648/8866 cut-off events. For 38137/41476 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 94263 event pairs, 345 based on Foata normal form. 625/9055 useless extension candidates. Maximal degree in co-relation 31984. Up to 2849 conditions per place. [2022-11-16 12:44:35,405 INFO L137 encePairwiseOnDemand]: 130/162 looper letters, 152 selfloop transitions, 83 changer transitions 0/309 dead transitions. [2022-11-16 12:44:35,406 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 309 transitions, 2644 flow [2022-11-16 12:44:35,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-16 12:44:35,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-16 12:44:35,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 2493 transitions. [2022-11-16 12:44:35,411 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.512962962962963 [2022-11-16 12:44:35,411 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 2493 transitions. [2022-11-16 12:44:35,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 2493 transitions. [2022-11-16 12:44:35,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:44:35,413 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 2493 transitions. [2022-11-16 12:44:35,419 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 83.1) internal successors, (2493), 30 states have internal predecessors, (2493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:35,427 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 162.0) internal successors, (5022), 31 states have internal predecessors, (5022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:35,429 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 162.0) internal successors, (5022), 31 states have internal predecessors, (5022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:35,430 INFO L175 Difference]: Start difference. First operand has 258 places, 253 transitions, 1770 flow. Second operand 30 states and 2493 transitions. [2022-11-16 12:44:35,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 309 transitions, 2644 flow [2022-11-16 12:44:35,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 309 transitions, 2608 flow, removed 3 selfloop flow, removed 11 redundant places. [2022-11-16 12:44:35,658 INFO L231 Difference]: Finished difference. Result has 279 places, 275 transitions, 2184 flow [2022-11-16 12:44:35,658 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=1734, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=2184, PETRI_PLACES=279, PETRI_TRANSITIONS=275} [2022-11-16 12:44:35,659 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 141 predicate places. [2022-11-16 12:44:35,659 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 275 transitions, 2184 flow [2022-11-16 12:44:35,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 81.0) internal successors, (5184), 64 states have internal predecessors, (5184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:35,661 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:44:35,661 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 12:44:35,672 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-16 12:44:35,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-16 12:44:35,867 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-11-16 12:44:35,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:44:35,867 INFO L85 PathProgramCache]: Analyzing trace with hash -148711389, now seen corresponding path program 2 times [2022-11-16 12:44:35,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:44:35,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14611544] [2022-11-16 12:44:35,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:44:35,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:44:35,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:36,606 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:44:36,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:44:36,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14611544] [2022-11-16 12:44:36,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14611544] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:44:36,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561807871] [2022-11-16 12:44:36,607 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:44:36,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:44:36,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:44:36,611 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:44:36,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-16 12:44:36,718 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 12:44:36,719 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:44:36,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-16 12:44:36,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:44:37,017 INFO L321 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-11-16 12:44:37,017 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-11-16 12:44:37,043 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:44:37,043 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:44:37,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [561807871] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:44:37,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:44:37,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [16] total 19 [2022-11-16 12:44:37,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895742130] [2022-11-16 12:44:37,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:44:37,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:44:37,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:44:37,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:44:37,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2022-11-16 12:44:37,045 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 162 [2022-11-16 12:44:37,046 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 275 transitions, 2184 flow. Second operand has 6 states, 6 states have (on average 119.33333333333333) internal successors, (716), 6 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:37,046 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:44:37,046 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 162 [2022-11-16 12:44:37,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:44:38,958 INFO L130 PetriNetUnfolder]: 2758/9027 cut-off events. [2022-11-16 12:44:38,958 INFO L131 PetriNetUnfolder]: For 51831/58392 co-relation queries the response was YES. [2022-11-16 12:44:39,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35648 conditions, 9027 events. 2758/9027 cut-off events. For 51831/58392 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 95459 event pairs, 902 based on Foata normal form. 290/8789 useless extension candidates. Maximal degree in co-relation 35477. Up to 5066 conditions per place. [2022-11-16 12:44:39,217 INFO L137 encePairwiseOnDemand]: 152/162 looper letters, 141 selfloop transitions, 37 changer transitions 1/304 dead transitions. [2022-11-16 12:44:39,218 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 304 transitions, 2764 flow [2022-11-16 12:44:39,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:44:39,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 12:44:39,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 754 transitions. [2022-11-16 12:44:39,220 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7757201646090535 [2022-11-16 12:44:39,220 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 754 transitions. [2022-11-16 12:44:39,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 754 transitions. [2022-11-16 12:44:39,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:44:39,221 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 754 transitions. [2022-11-16 12:44:39,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 125.66666666666667) internal successors, (754), 6 states have internal predecessors, (754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:39,224 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 162.0) internal successors, (1134), 7 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:39,225 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 162.0) internal successors, (1134), 7 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:39,225 INFO L175 Difference]: Start difference. First operand has 279 places, 275 transitions, 2184 flow. Second operand 6 states and 754 transitions. [2022-11-16 12:44:39,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 304 transitions, 2764 flow [2022-11-16 12:44:39,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 304 transitions, 2697 flow, removed 11 selfloop flow, removed 21 redundant places. [2022-11-16 12:44:39,465 INFO L231 Difference]: Finished difference. Result has 266 places, 286 transitions, 2349 flow [2022-11-16 12:44:39,466 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=2117, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2349, PETRI_PLACES=266, PETRI_TRANSITIONS=286} [2022-11-16 12:44:39,466 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 128 predicate places. [2022-11-16 12:44:39,466 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 286 transitions, 2349 flow [2022-11-16 12:44:39,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 119.33333333333333) internal successors, (716), 6 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:39,467 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:44:39,467 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 12:44:39,472 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-11-16 12:44:39,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-16 12:44:39,672 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-11-16 12:44:39,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:44:39,672 INFO L85 PathProgramCache]: Analyzing trace with hash -691550083, now seen corresponding path program 3 times [2022-11-16 12:44:39,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:44:39,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759448126] [2022-11-16 12:44:39,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:44:39,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:44:39,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:41,009 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:44:41,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:44:41,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759448126] [2022-11-16 12:44:41,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759448126] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:44:41,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989413971] [2022-11-16 12:44:41,010 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 12:44:41,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:44:41,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:44:41,019 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:44:41,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-16 12:44:41,131 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-16 12:44:41,131 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:44:41,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-16 12:44:41,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:44:41,313 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-11-16 12:44:41,349 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:44:41,349 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:44:41,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1989413971] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:44:41,350 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:44:41,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [22] total 26 [2022-11-16 12:44:41,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406976032] [2022-11-16 12:44:41,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:44:41,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:44:41,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:44:41,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:44:41,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=629, Unknown=0, NotChecked=0, Total=702 [2022-11-16 12:44:41,352 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 162 [2022-11-16 12:44:41,352 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 286 transitions, 2349 flow. Second operand has 6 states, 6 states have (on average 119.33333333333333) internal successors, (716), 6 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:41,352 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:44:41,352 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 162 [2022-11-16 12:44:41,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:44:43,382 INFO L130 PetriNetUnfolder]: 2738/8951 cut-off events. [2022-11-16 12:44:43,382 INFO L131 PetriNetUnfolder]: For 56882/63489 co-relation queries the response was YES. [2022-11-16 12:44:43,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37720 conditions, 8951 events. 2738/8951 cut-off events. For 56882/63489 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 94488 event pairs, 889 based on Foata normal form. 286/8710 useless extension candidates. Maximal degree in co-relation 37559. Up to 5091 conditions per place. [2022-11-16 12:44:43,483 INFO L137 encePairwiseOnDemand]: 156/162 looper letters, 155 selfloop transitions, 23 changer transitions 1/304 dead transitions. [2022-11-16 12:44:43,483 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 304 transitions, 2857 flow [2022-11-16 12:44:43,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:44:43,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 12:44:43,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 749 transitions. [2022-11-16 12:44:43,485 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7705761316872428 [2022-11-16 12:44:43,486 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 749 transitions. [2022-11-16 12:44:43,486 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 749 transitions. [2022-11-16 12:44:43,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:44:43,486 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 749 transitions. [2022-11-16 12:44:43,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 124.83333333333333) internal successors, (749), 6 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:43,489 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 162.0) internal successors, (1134), 7 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:43,490 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 162.0) internal successors, (1134), 7 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:43,490 INFO L175 Difference]: Start difference. First operand has 266 places, 286 transitions, 2349 flow. Second operand 6 states and 749 transitions. [2022-11-16 12:44:43,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 304 transitions, 2857 flow [2022-11-16 12:44:43,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 304 transitions, 2828 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-11-16 12:44:43,703 INFO L231 Difference]: Finished difference. Result has 271 places, 286 transitions, 2376 flow [2022-11-16 12:44:43,703 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=2322, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2376, PETRI_PLACES=271, PETRI_TRANSITIONS=286} [2022-11-16 12:44:43,704 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 133 predicate places. [2022-11-16 12:44:43,704 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 286 transitions, 2376 flow [2022-11-16 12:44:43,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 119.33333333333333) internal successors, (716), 6 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:43,704 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:44:43,704 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 12:44:43,709 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-16 12:44:43,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-16 12:44:43,905 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-11-16 12:44:43,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:44:43,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1012281855, now seen corresponding path program 1 times [2022-11-16 12:44:43,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:44:43,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237706983] [2022-11-16 12:44:43,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:44:43,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:44:44,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:45,534 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:44:45,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:44:45,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237706983] [2022-11-16 12:44:45,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237706983] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:44:45,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [254513025] [2022-11-16 12:44:45,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:44:45,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:44:45,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:44:45,537 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:44:45,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-16 12:44:45,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:45,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-16 12:44:45,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:44:46,227 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-16 12:44:47,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:44:47,021 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-11-16 12:44:47,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:44:47,193 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-11-16 12:44:47,501 INFO L321 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-11-16 12:44:47,502 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2022-11-16 12:44:47,555 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:44:47,555 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:44:48,778 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:44:48,778 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2022-11-16 12:44:48,791 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:44:48,791 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 174 treesize of output 162 [2022-11-16 12:44:48,799 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 146 treesize of output 134 [2022-11-16 12:44:48,807 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 134 treesize of output 110 [2022-11-16 12:44:50,508 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:44:50,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [254513025] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:44:50,508 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:44:50,508 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 63 [2022-11-16 12:44:50,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078029031] [2022-11-16 12:44:50,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:44:50,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-11-16 12:44:50,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:44:50,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-11-16 12:44:50,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=3768, Unknown=4, NotChecked=0, Total=4032 [2022-11-16 12:44:50,514 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 162 [2022-11-16 12:44:50,518 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 286 transitions, 2376 flow. Second operand has 64 states, 64 states have (on average 81.0) internal successors, (5184), 64 states have internal predecessors, (5184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:50,519 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:44:50,519 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 162 [2022-11-16 12:44:50,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:44:56,867 INFO L130 PetriNetUnfolder]: 3369/10930 cut-off events. [2022-11-16 12:44:56,867 INFO L131 PetriNetUnfolder]: For 73840/82377 co-relation queries the response was YES. [2022-11-16 12:44:56,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47581 conditions, 10930 events. 3369/10930 cut-off events. For 73840/82377 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 119042 event pairs, 437 based on Foata normal form. 1346/11759 useless extension candidates. Maximal degree in co-relation 47391. Up to 4741 conditions per place. [2022-11-16 12:44:57,008 INFO L137 encePairwiseOnDemand]: 126/162 looper letters, 162 selfloop transitions, 134 changer transitions 0/370 dead transitions. [2022-11-16 12:44:57,008 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 370 transitions, 3853 flow [2022-11-16 12:44:57,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-16 12:44:57,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-16 12:44:57,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 2976 transitions. [2022-11-16 12:44:57,014 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5102880658436214 [2022-11-16 12:44:57,014 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 2976 transitions. [2022-11-16 12:44:57,014 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 2976 transitions. [2022-11-16 12:44:57,016 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:44:57,016 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 2976 transitions. [2022-11-16 12:44:57,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 82.66666666666667) internal successors, (2976), 36 states have internal predecessors, (2976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:57,029 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 162.0) internal successors, (5994), 37 states have internal predecessors, (5994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:57,031 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 162.0) internal successors, (5994), 37 states have internal predecessors, (5994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:57,032 INFO L175 Difference]: Start difference. First operand has 271 places, 286 transitions, 2376 flow. Second operand 36 states and 2976 transitions. [2022-11-16 12:44:57,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 370 transitions, 3853 flow [2022-11-16 12:44:57,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 370 transitions, 3805 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 12:44:57,526 INFO L231 Difference]: Finished difference. Result has 309 places, 350 transitions, 3631 flow [2022-11-16 12:44:57,527 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=2330, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=3631, PETRI_PLACES=309, PETRI_TRANSITIONS=350} [2022-11-16 12:44:57,527 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 171 predicate places. [2022-11-16 12:44:57,527 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 350 transitions, 3631 flow [2022-11-16 12:44:57,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 81.0) internal successors, (5184), 64 states have internal predecessors, (5184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:57,529 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:44:57,530 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 12:44:57,539 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-16 12:44:57,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:44:57,736 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-11-16 12:44:57,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:44:57,736 INFO L85 PathProgramCache]: Analyzing trace with hash -2146888161, now seen corresponding path program 2 times [2022-11-16 12:44:57,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:44:57,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865618284] [2022-11-16 12:44:57,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:44:57,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:44:57,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:44:58,925 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:44:58,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:44:58,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865618284] [2022-11-16 12:44:58,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865618284] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:44:58,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055451543] [2022-11-16 12:44:58,926 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:44:58,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:44:58,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:44:58,927 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:44:58,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-16 12:44:59,044 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 12:44:59,044 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:44:59,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-16 12:44:59,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:44:59,211 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-11-16 12:44:59,239 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:44:59,240 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:44:59,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1055451543] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:44:59,240 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:44:59,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [16] total 20 [2022-11-16 12:44:59,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927920850] [2022-11-16 12:44:59,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:44:59,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:44:59,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:44:59,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:44:59,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=368, Unknown=0, NotChecked=0, Total=420 [2022-11-16 12:44:59,243 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 162 [2022-11-16 12:44:59,244 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 350 transitions, 3631 flow. Second operand has 6 states, 6 states have (on average 119.33333333333333) internal successors, (716), 6 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:44:59,244 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:44:59,244 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 162 [2022-11-16 12:44:59,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:45:02,636 INFO L130 PetriNetUnfolder]: 4063/12644 cut-off events. [2022-11-16 12:45:02,636 INFO L131 PetriNetUnfolder]: For 124586/143037 co-relation queries the response was YES. [2022-11-16 12:45:02,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63967 conditions, 12644 events. 4063/12644 cut-off events. For 124586/143037 co-relation queries the response was YES. Maximal size of possible extension queue 552. Compared 139595 event pairs, 1230 based on Foata normal form. 1052/12996 useless extension candidates. Maximal degree in co-relation 63780. Up to 5962 conditions per place. [2022-11-16 12:45:03,017 INFO L137 encePairwiseOnDemand]: 155/162 looper letters, 282 selfloop transitions, 25 changer transitions 0/433 dead transitions. [2022-11-16 12:45:03,017 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 433 transitions, 5464 flow [2022-11-16 12:45:03,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:45:03,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 12:45:03,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 754 transitions. [2022-11-16 12:45:03,019 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7757201646090535 [2022-11-16 12:45:03,019 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 754 transitions. [2022-11-16 12:45:03,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 754 transitions. [2022-11-16 12:45:03,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:45:03,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 754 transitions. [2022-11-16 12:45:03,020 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 125.66666666666667) internal successors, (754), 6 states have internal predecessors, (754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:03,021 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 162.0) internal successors, (1134), 7 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:03,021 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 162.0) internal successors, (1134), 7 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:03,021 INFO L175 Difference]: Start difference. First operand has 309 places, 350 transitions, 3631 flow. Second operand 6 states and 754 transitions. [2022-11-16 12:45:03,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 433 transitions, 5464 flow [2022-11-16 12:45:03,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 433 transitions, 5332 flow, removed 36 selfloop flow, removed 25 redundant places. [2022-11-16 12:45:03,917 INFO L231 Difference]: Finished difference. Result has 290 places, 354 transitions, 3671 flow [2022-11-16 12:45:03,918 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=3525, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3671, PETRI_PLACES=290, PETRI_TRANSITIONS=354} [2022-11-16 12:45:03,918 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 152 predicate places. [2022-11-16 12:45:03,918 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 354 transitions, 3671 flow [2022-11-16 12:45:03,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 119.33333333333333) internal successors, (716), 6 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:03,919 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:45:03,919 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:45:03,924 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-16 12:45:04,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:45:04,120 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-11-16 12:45:04,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:45:04,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1868906777, now seen corresponding path program 2 times [2022-11-16 12:45:04,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:45:04,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782255228] [2022-11-16 12:45:04,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:45:04,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:45:04,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:45:04,300 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:45:04,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:45:04,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782255228] [2022-11-16 12:45:04,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782255228] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:45:04,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492860926] [2022-11-16 12:45:04,301 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:45:04,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:45:04,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:45:04,315 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:45:04,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-16 12:45:04,421 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 12:45:04,421 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:45:04,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 12:45:04,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:45:04,582 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-16 12:45:04,583 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:45:04,731 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-16 12:45:04,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492860926] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:45:04,732 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:45:04,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-11-16 12:45:04,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670724853] [2022-11-16 12:45:04,732 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:45:04,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 12:45:04,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:45:04,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 12:45:04,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-16 12:45:04,736 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 162 [2022-11-16 12:45:04,738 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 354 transitions, 3671 flow. Second operand has 18 states, 18 states have (on average 121.61111111111111) internal successors, (2189), 18 states have internal predecessors, (2189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:04,738 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:45:04,739 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 162 [2022-11-16 12:45:04,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:45:09,941 INFO L130 PetriNetUnfolder]: 3531/15365 cut-off events. [2022-11-16 12:45:09,941 INFO L131 PetriNetUnfolder]: For 148247/157064 co-relation queries the response was YES. [2022-11-16 12:45:10,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71192 conditions, 15365 events. 3531/15365 cut-off events. For 148247/157064 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 187353 event pairs, 497 based on Foata normal form. 936/15881 useless extension candidates. Maximal degree in co-relation 71015. Up to 3620 conditions per place. [2022-11-16 12:45:10,242 INFO L137 encePairwiseOnDemand]: 151/162 looper letters, 462 selfloop transitions, 25 changer transitions 0/701 dead transitions. [2022-11-16 12:45:10,242 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 701 transitions, 9832 flow [2022-11-16 12:45:10,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-16 12:45:10,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-16 12:45:10,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2931 transitions. [2022-11-16 12:45:10,246 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.753858024691358 [2022-11-16 12:45:10,246 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2931 transitions. [2022-11-16 12:45:10,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2931 transitions. [2022-11-16 12:45:10,247 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:45:10,247 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2931 transitions. [2022-11-16 12:45:10,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 122.125) internal successors, (2931), 24 states have internal predecessors, (2931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:10,255 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 162.0) internal successors, (4050), 25 states have internal predecessors, (4050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:10,256 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 162.0) internal successors, (4050), 25 states have internal predecessors, (4050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:10,256 INFO L175 Difference]: Start difference. First operand has 290 places, 354 transitions, 3671 flow. Second operand 24 states and 2931 transitions. [2022-11-16 12:45:10,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 701 transitions, 9832 flow [2022-11-16 12:45:11,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 701 transitions, 9689 flow, removed 49 selfloop flow, removed 6 redundant places. [2022-11-16 12:45:11,558 INFO L231 Difference]: Finished difference. Result has 307 places, 358 transitions, 3699 flow [2022-11-16 12:45:11,559 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=3612, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=3699, PETRI_PLACES=307, PETRI_TRANSITIONS=358} [2022-11-16 12:45:11,559 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 169 predicate places. [2022-11-16 12:45:11,559 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 358 transitions, 3699 flow [2022-11-16 12:45:11,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 121.61111111111111) internal successors, (2189), 18 states have internal predecessors, (2189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:11,560 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:45:11,560 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, 1] [2022-11-16 12:45:11,564 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-16 12:45:11,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:45:11,760 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-11-16 12:45:11,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:45:11,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1936167991, now seen corresponding path program 1 times [2022-11-16 12:45:11,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:45:11,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841401618] [2022-11-16 12:45:11,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:45:11,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:45:11,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:45:12,651 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:45:12,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:45:12,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841401618] [2022-11-16 12:45:12,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841401618] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:45:12,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178821564] [2022-11-16 12:45:12,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:45:12,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:45:12,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:45:12,655 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:45:12,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-16 12:45:12,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:45:12,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-16 12:45:12,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:45:13,383 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-16 12:45:14,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:45:14,217 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-16 12:45:14,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:45:14,372 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-16 12:45:14,693 INFO L321 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-11-16 12:45:14,693 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-11-16 12:45:14,728 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:45:14,728 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:45:15,809 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:45:15,809 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2022-11-16 12:45:15,821 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:45:15,822 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 80 treesize of output 76 [2022-11-16 12:45:15,828 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 48 [2022-11-16 12:45:15,834 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 20 [2022-11-16 12:45:17,399 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:45:17,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1178821564] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:45:17,400 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:45:17,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 22, 22] total 58 [2022-11-16 12:45:17,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763624008] [2022-11-16 12:45:17,400 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:45:17,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-11-16 12:45:17,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:45:17,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-11-16 12:45:17,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=3179, Unknown=7, NotChecked=0, Total=3422 [2022-11-16 12:45:17,407 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 162 [2022-11-16 12:45:17,410 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 358 transitions, 3699 flow. Second operand has 59 states, 59 states have (on average 84.13559322033899) internal successors, (4964), 59 states have internal predecessors, (4964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:17,411 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:45:17,411 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 162 [2022-11-16 12:45:17,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:45:26,880 INFO L130 PetriNetUnfolder]: 6634/21316 cut-off events. [2022-11-16 12:45:26,881 INFO L131 PetriNetUnfolder]: For 193050/220333 co-relation queries the response was YES. [2022-11-16 12:45:27,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104969 conditions, 21316 events. 6634/21316 cut-off events. For 193050/220333 co-relation queries the response was YES. Maximal size of possible extension queue 599. Compared 249937 event pairs, 990 based on Foata normal form. 3961/24662 useless extension candidates. Maximal degree in co-relation 104631. Up to 8976 conditions per place. [2022-11-16 12:45:27,216 INFO L137 encePairwiseOnDemand]: 127/162 looper letters, 186 selfloop transitions, 125 changer transitions 1/389 dead transitions. [2022-11-16 12:45:27,216 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 389 transitions, 4567 flow [2022-11-16 12:45:27,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-16 12:45:27,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-16 12:45:27,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 2754 transitions. [2022-11-16 12:45:27,221 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.53125 [2022-11-16 12:45:27,221 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 2754 transitions. [2022-11-16 12:45:27,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 2754 transitions. [2022-11-16 12:45:27,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:45:27,223 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 2754 transitions. [2022-11-16 12:45:27,228 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 86.0625) internal successors, (2754), 32 states have internal predecessors, (2754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:27,234 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 162.0) internal successors, (5346), 33 states have internal predecessors, (5346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:27,236 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 162.0) internal successors, (5346), 33 states have internal predecessors, (5346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:27,236 INFO L175 Difference]: Start difference. First operand has 307 places, 358 transitions, 3699 flow. Second operand 32 states and 2754 transitions. [2022-11-16 12:45:27,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 389 transitions, 4567 flow [2022-11-16 12:45:29,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 389 transitions, 4503 flow, removed 2 selfloop flow, removed 18 redundant places. [2022-11-16 12:45:29,319 INFO L231 Difference]: Finished difference. Result has 322 places, 367 transitions, 4053 flow [2022-11-16 12:45:29,320 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=3635, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=4053, PETRI_PLACES=322, PETRI_TRANSITIONS=367} [2022-11-16 12:45:29,320 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 184 predicate places. [2022-11-16 12:45:29,320 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 367 transitions, 4053 flow [2022-11-16 12:45:29,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 84.13559322033899) internal successors, (4964), 59 states have internal predecessors, (4964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:29,321 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:45:29,322 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, 1] [2022-11-16 12:45:29,326 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-16 12:45:29,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-16 12:45:29,523 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-11-16 12:45:29,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:45:29,523 INFO L85 PathProgramCache]: Analyzing trace with hash -606748517, now seen corresponding path program 2 times [2022-11-16 12:45:29,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:45:29,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333833065] [2022-11-16 12:45:29,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:45:29,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:45:29,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:45:31,432 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:45:31,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:45:31,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333833065] [2022-11-16 12:45:31,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333833065] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:45:31,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873960064] [2022-11-16 12:45:31,433 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:45:31,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:45:31,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:45:31,434 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:45:31,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-16 12:45:31,572 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 12:45:31,572 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:45:31,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 12:45:31,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:45:31,796 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-11-16 12:45:31,834 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:45:31,834 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:45:31,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [873960064] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:45:31,834 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:45:31,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [26] total 30 [2022-11-16 12:45:31,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426211101] [2022-11-16 12:45:31,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:45:31,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:45:31,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:45:31,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:45:31,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=842, Unknown=0, NotChecked=0, Total=930 [2022-11-16 12:45:31,838 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 162 [2022-11-16 12:45:31,839 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 367 transitions, 4053 flow. Second operand has 6 states, 6 states have (on average 119.33333333333333) internal successors, (716), 6 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:31,839 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:45:31,839 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 162 [2022-11-16 12:45:31,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:45:39,845 INFO L130 PetriNetUnfolder]: 8254/24706 cut-off events. [2022-11-16 12:45:39,845 INFO L131 PetriNetUnfolder]: For 282501/317268 co-relation queries the response was YES. [2022-11-16 12:45:40,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135315 conditions, 24706 events. 8254/24706 cut-off events. For 282501/317268 co-relation queries the response was YES. Maximal size of possible extension queue 725. Compared 291292 event pairs, 2334 based on Foata normal form. 2849/26653 useless extension candidates. Maximal degree in co-relation 134945. Up to 12444 conditions per place. [2022-11-16 12:45:40,320 INFO L137 encePairwiseOnDemand]: 154/162 looper letters, 259 selfloop transitions, 59 changer transitions 0/448 dead transitions. [2022-11-16 12:45:40,320 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 448 transitions, 5865 flow [2022-11-16 12:45:40,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:45:40,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 12:45:40,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 758 transitions. [2022-11-16 12:45:40,323 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.779835390946502 [2022-11-16 12:45:40,323 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 758 transitions. [2022-11-16 12:45:40,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 758 transitions. [2022-11-16 12:45:40,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:45:40,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 758 transitions. [2022-11-16 12:45:40,326 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 126.33333333333333) internal successors, (758), 6 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:40,328 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 162.0) internal successors, (1134), 7 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:40,328 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 162.0) internal successors, (1134), 7 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:40,329 INFO L175 Difference]: Start difference. First operand has 322 places, 367 transitions, 4053 flow. Second operand 6 states and 758 transitions. [2022-11-16 12:45:40,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 448 transitions, 5865 flow [2022-11-16 12:45:44,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 448 transitions, 5765 flow, removed 12 selfloop flow, removed 26 redundant places. [2022-11-16 12:45:44,553 INFO L231 Difference]: Finished difference. Result has 304 places, 380 transitions, 4414 flow [2022-11-16 12:45:44,553 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=162, PETRI_DIFFERENCE_MINUEND_FLOW=3960, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4414, PETRI_PLACES=304, PETRI_TRANSITIONS=380} [2022-11-16 12:45:44,554 INFO L288 CegarLoopForPetriNet]: 138 programPoint places, 166 predicate places. [2022-11-16 12:45:44,554 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 380 transitions, 4414 flow [2022-11-16 12:45:44,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 119.33333333333333) internal successors, (716), 6 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:44,554 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:45:44,554 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, 1, 1] [2022-11-16 12:45:44,559 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-11-16 12:45:44,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:45:44,755 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 21 more)] === [2022-11-16 12:45:44,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:45:44,756 INFO L85 PathProgramCache]: Analyzing trace with hash 339981587, now seen corresponding path program 1 times [2022-11-16 12:45:44,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:45:44,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999287113] [2022-11-16 12:45:44,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:45:44,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:45:44,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:45:45,516 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:45:45,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:45:45,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999287113] [2022-11-16 12:45:45,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999287113] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:45:45,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151324231] [2022-11-16 12:45:45,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:45:45,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:45:45,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:45:45,518 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:45:45,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f890227a-a569-4ad4-a248-853388adecf5/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-16 12:45:45,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:45:45,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-16 12:45:45,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:45:46,197 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-16 12:45:46,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:45:46,960 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-11-16 12:45:47,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 12:45:47,112 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2022-11-16 12:45:47,382 INFO L321 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-11-16 12:45:47,382 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2022-11-16 12:45:47,431 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:45:47,432 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:45:48,442 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:45:48,443 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2022-11-16 12:45:48,455 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 12:45:48,456 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 174 treesize of output 162 [2022-11-16 12:45:48,465 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 61 [2022-11-16 12:45:48,472 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 134 treesize of output 110 [2022-11-16 12:45:49,876 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:45:49,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1151324231] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:45:49,876 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:45:49,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 22, 22] total 58 [2022-11-16 12:45:49,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224148253] [2022-11-16 12:45:49,877 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:45:49,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-11-16 12:45:49,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:45:49,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-11-16 12:45:49,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=3182, Unknown=3, NotChecked=0, Total=3422 [2022-11-16 12:45:49,880 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 162 [2022-11-16 12:45:49,882 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 380 transitions, 4414 flow. Second operand has 59 states, 59 states have (on average 84.1864406779661) internal successors, (4967), 59 states have internal predecessors, (4967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:45:49,882 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:45:49,882 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 162 [2022-11-16 12:45:49,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand