./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 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_396f09d9-2c8b-43b8-98a8-7109a5d5f8f8/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396f09d9-2c8b-43b8-98a8-7109a5d5f8f8/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396f09d9-2c8b-43b8-98a8-7109a5d5f8f8/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396f09d9-2c8b-43b8-98a8-7109a5d5f8f8/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396f09d9-2c8b-43b8-98a8-7109a5d5f8f8/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396f09d9-2c8b-43b8-98a8-7109a5d5f8f8/bin/uautomizer-uyxdKDjOR8 --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 83223bd52506e4247e7ac7ce7a49284be0292b773b9e827e6221f58042ba0602 --- 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-2329fc7 [2022-12-13 21:39:13,905 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 21:39:13,906 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 21:39:13,919 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 21:39:13,919 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 21:39:13,920 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 21:39:13,920 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 21:39:13,921 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 21:39:13,922 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 21:39:13,923 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 21:39:13,924 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 21:39:13,924 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 21:39:13,925 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 21:39:13,925 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 21:39:13,926 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 21:39:13,927 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 21:39:13,927 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 21:39:13,928 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 21:39:13,929 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 21:39:13,930 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 21:39:13,931 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 21:39:13,932 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 21:39:13,933 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 21:39:13,933 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 21:39:13,935 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 21:39:13,936 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 21:39:13,936 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 21:39:13,936 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 21:39:13,937 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 21:39:13,937 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 21:39:13,938 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 21:39:13,938 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 21:39:13,939 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 21:39:13,939 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 21:39:13,940 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 21:39:13,940 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 21:39:13,940 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 21:39:13,941 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 21:39:13,941 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 21:39:13,941 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 21:39:13,942 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 21:39:13,942 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396f09d9-2c8b-43b8-98a8-7109a5d5f8f8/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-12-13 21:39:13,956 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 21:39:13,957 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 21:39:13,957 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 21:39:13,962 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 21:39:13,962 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 21:39:13,962 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 21:39:13,963 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 21:39:13,963 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 21:39:13,963 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 21:39:13,963 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 21:39:13,963 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 21:39:13,963 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 21:39:13,964 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 21:39:13,964 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 21:39:13,964 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 21:39:13,964 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 21:39:13,964 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 21:39:13,964 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 21:39:13,964 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 21:39:13,964 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 21:39:13,964 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 21:39:13,965 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 21:39:13,965 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 21:39:13,965 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 21:39:13,965 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 21:39:13,965 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 21:39:13,965 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 21:39:13,965 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 21:39:13,965 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 21:39:13,966 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 21:39:13,966 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 21:39:13,966 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 21:39:13,966 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 21:39:13,966 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 21:39:13,966 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 21:39:13,966 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 21:39:13,966 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 21:39:13,966 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_396f09d9-2c8b-43b8-98a8-7109a5d5f8f8/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396f09d9-2c8b-43b8-98a8-7109a5d5f8f8/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 83223bd52506e4247e7ac7ce7a49284be0292b773b9e827e6221f58042ba0602 [2022-12-13 21:39:14,126 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 21:39:14,144 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 21:39:14,146 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 21:39:14,147 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 21:39:14,147 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 21:39:14,148 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396f09d9-2c8b-43b8-98a8-7109a5d5f8f8/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c [2022-12-13 21:39:16,762 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 21:39:16,918 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 21:39:16,918 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396f09d9-2c8b-43b8-98a8-7109a5d5f8f8/sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c [2022-12-13 21:39:16,923 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396f09d9-2c8b-43b8-98a8-7109a5d5f8f8/bin/uautomizer-uyxdKDjOR8/data/d2178add2/42f80b6afd6d424589e12daa59513314/FLAG4c9593592 [2022-12-13 21:39:16,934 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396f09d9-2c8b-43b8-98a8-7109a5d5f8f8/bin/uautomizer-uyxdKDjOR8/data/d2178add2/42f80b6afd6d424589e12daa59513314 [2022-12-13 21:39:16,936 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 21:39:16,937 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 21:39:16,938 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 21:39:16,938 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 21:39:16,941 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 21:39:16,942 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:39:16" (1/1) ... [2022-12-13 21:39:16,943 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b8741e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:39:16, skipping insertion in model container [2022-12-13 21:39:16,943 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 09:39:16" (1/1) ... [2022-12-13 21:39:16,948 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 21:39:16,965 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 21:39:17,098 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396f09d9-2c8b-43b8-98a8-7109a5d5f8f8/sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c[4836,4849] [2022-12-13 21:39:17,103 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:39:17,111 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 21:39:17,133 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396f09d9-2c8b-43b8-98a8-7109a5d5f8f8/sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c[4836,4849] [2022-12-13 21:39:17,136 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 21:39:17,148 INFO L208 MainTranslator]: Completed translation [2022-12-13 21:39:17,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:39:17 WrapperNode [2022-12-13 21:39:17,148 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 21:39:17,149 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 21:39:17,149 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 21:39:17,149 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 21:39:17,154 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:39:17" (1/1) ... [2022-12-13 21:39:17,161 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:39:17" (1/1) ... [2022-12-13 21:39:17,183 INFO L138 Inliner]: procedures = 26, calls = 44, calls flagged for inlining = 17, calls inlined = 21, statements flattened = 347 [2022-12-13 21:39:17,183 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 21:39:17,184 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 21:39:17,184 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 21:39:17,184 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 21:39:17,191 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:39:17" (1/1) ... [2022-12-13 21:39:17,191 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:39:17" (1/1) ... [2022-12-13 21:39:17,194 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:39:17" (1/1) ... [2022-12-13 21:39:17,194 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:39:17" (1/1) ... [2022-12-13 21:39:17,201 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:39:17" (1/1) ... [2022-12-13 21:39:17,204 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:39:17" (1/1) ... [2022-12-13 21:39:17,206 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:39:17" (1/1) ... [2022-12-13 21:39:17,207 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:39:17" (1/1) ... [2022-12-13 21:39:17,210 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 21:39:17,210 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 21:39:17,210 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 21:39:17,210 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 21:39:17,211 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:39:17" (1/1) ... [2022-12-13 21:39:17,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 21:39:17,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396f09d9-2c8b-43b8-98a8-7109a5d5f8f8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:39:17,235 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396f09d9-2c8b-43b8-98a8-7109a5d5f8f8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 21:39:17,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396f09d9-2c8b-43b8-98a8-7109a5d5f8f8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 21:39:17,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 21:39:17,273 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 21:39:17,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 21:39:17,273 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 21:39:17,273 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 21:39:17,273 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 21:39:17,273 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 21:39:17,273 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 21:39:17,273 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-13 21:39:17,273 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-13 21:39:17,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 21:39:17,274 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 21:39:17,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 21:39:17,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 21:39:17,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 21:39:17,275 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 21:39:17,369 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 21:39:17,370 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 21:39:17,797 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 21:39:17,808 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 21:39:17,808 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-13 21:39:17,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:39:17 BoogieIcfgContainer [2022-12-13 21:39:17,810 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 21:39:17,812 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 21:39:17,812 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 21:39:17,814 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 21:39:17,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 09:39:16" (1/3) ... [2022-12-13 21:39:17,815 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14ac0d39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:39:17, skipping insertion in model container [2022-12-13 21:39:17,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 09:39:17" (2/3) ... [2022-12-13 21:39:17,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14ac0d39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 09:39:17, skipping insertion in model container [2022-12-13 21:39:17,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:39:17" (3/3) ... [2022-12-13 21:39:17,817 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-subst.wvr.c [2022-12-13 21:39:17,823 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 21:39:17,831 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 21:39:17,831 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2022-12-13 21:39:17,831 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 21:39:17,928 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-13 21:39:17,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 434 places, 456 transitions, 936 flow [2022-12-13 21:39:18,067 INFO L130 PetriNetUnfolder]: 32/453 cut-off events. [2022-12-13 21:39:18,067 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-13 21:39:18,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 466 conditions, 453 events. 32/453 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1303 event pairs, 0 based on Foata normal form. 0/395 useless extension candidates. Maximal degree in co-relation 330. Up to 2 conditions per place. [2022-12-13 21:39:18,077 INFO L82 GeneralOperation]: Start removeDead. Operand has 434 places, 456 transitions, 936 flow [2022-12-13 21:39:18,084 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 411 places, 432 transitions, 879 flow [2022-12-13 21:39:18,087 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 21:39:18,095 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 411 places, 432 transitions, 879 flow [2022-12-13 21:39:18,097 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 411 places, 432 transitions, 879 flow [2022-12-13 21:39:18,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 411 places, 432 transitions, 879 flow [2022-12-13 21:39:18,187 INFO L130 PetriNetUnfolder]: 31/432 cut-off events. [2022-12-13 21:39:18,187 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 21:39:18,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 444 conditions, 432 events. 31/432 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1301 event pairs, 0 based on Foata normal form. 0/375 useless extension candidates. Maximal degree in co-relation 330. Up to 2 conditions per place. [2022-12-13 21:39:18,211 INFO L119 LiptonReduction]: Number of co-enabled transitions 62208 [2022-12-13 21:39:35,934 INFO L134 LiptonReduction]: Checked pairs total: 57673 [2022-12-13 21:39:35,934 INFO L136 LiptonReduction]: Total number of compositions: 560 [2022-12-13 21:39:35,949 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 21:39:35,955 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;@31e96f1e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 21:39:35,955 INFO L358 AbstractCegarLoop]: Starting to check reachability of 53 error locations. [2022-12-13 21:39:35,958 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-12-13 21:39:35,958 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 21:39:35,958 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:39:35,959 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 21:39:35,959 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-12-13 21:39:35,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:39:35,964 INFO L85 PathProgramCache]: Analyzing trace with hash 61423, now seen corresponding path program 1 times [2022-12-13 21:39:35,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:39:35,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546770558] [2022-12-13 21:39:35,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:39:35,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:39:36,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:39:36,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:39:36,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:39:36,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546770558] [2022-12-13 21:39:36,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546770558] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:39:36,215 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:39:36,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 21:39:36,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131906127] [2022-12-13 21:39:36,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:39:36,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:39:36,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:39:36,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:39:36,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:39:36,262 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 427 out of 1016 [2022-12-13 21:39:36,267 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 111 flow. Second operand has 3 states, 3 states have (on average 427.6666666666667) internal successors, (1283), 3 states have internal predecessors, (1283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:36,267 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:39:36,267 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 427 of 1016 [2022-12-13 21:39:36,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:39:37,511 INFO L130 PetriNetUnfolder]: 6211/8841 cut-off events. [2022-12-13 21:39:37,511 INFO L131 PetriNetUnfolder]: For 462/462 co-relation queries the response was YES. [2022-12-13 21:39:37,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18123 conditions, 8841 events. 6211/8841 cut-off events. For 462/462 co-relation queries the response was YES. Maximal size of possible extension queue 733. Compared 46918 event pairs, 5306 based on Foata normal form. 0/3413 useless extension candidates. Maximal degree in co-relation 8144. Up to 4423 conditions per place. [2022-12-13 21:39:37,544 INFO L137 encePairwiseOnDemand]: 1003/1016 looper letters, 73 selfloop transitions, 2 changer transitions 0/75 dead transitions. [2022-12-13 21:39:37,545 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 75 transitions, 330 flow [2022-12-13 21:39:37,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:39:37,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:39:37,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1376 transitions. [2022-12-13 21:39:37,557 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45144356955380577 [2022-12-13 21:39:37,558 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1376 transitions. [2022-12-13 21:39:37,558 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1376 transitions. [2022-12-13 21:39:37,561 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:39:37,562 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1376 transitions. [2022-12-13 21:39:37,570 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 458.6666666666667) internal successors, (1376), 3 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:37,578 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1016.0) internal successors, (4064), 4 states have internal predecessors, (4064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:37,580 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1016.0) internal successors, (4064), 4 states have internal predecessors, (4064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:37,581 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 111 flow. Second operand 3 states and 1376 transitions. [2022-12-13 21:39:37,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 75 transitions, 330 flow [2022-12-13 21:39:37,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 75 transitions, 312 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-12-13 21:39:37,604 INFO L231 Difference]: Finished difference. Result has 43 places, 40 transitions, 98 flow [2022-12-13 21:39:37,606 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1016, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=43, PETRI_TRANSITIONS=40} [2022-12-13 21:39:37,608 INFO L288 CegarLoopForPetriNet]: 54 programPoint places, -11 predicate places. [2022-12-13 21:39:37,608 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 40 transitions, 98 flow [2022-12-13 21:39:37,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 427.6666666666667) internal successors, (1283), 3 states have internal predecessors, (1283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:37,609 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:39:37,609 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 21:39:37,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 21:39:37,609 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-12-13 21:39:37,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:39:37,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1908899, now seen corresponding path program 1 times [2022-12-13 21:39:37,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:39:37,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264802071] [2022-12-13 21:39:37,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:39:37,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:39:37,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:39:37,659 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:39:37,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:39:37,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264802071] [2022-12-13 21:39:37,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264802071] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:39:37,660 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:39:37,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 21:39:37,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713050642] [2022-12-13 21:39:37,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:39:37,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:39:37,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:39:37,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:39:37,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:39:37,672 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 427 out of 1016 [2022-12-13 21:39:37,675 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 40 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 428.0) internal successors, (1284), 3 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:37,675 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:39:37,675 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 427 of 1016 [2022-12-13 21:39:37,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:39:38,676 INFO L130 PetriNetUnfolder]: 6211/8840 cut-off events. [2022-12-13 21:39:38,676 INFO L131 PetriNetUnfolder]: For 96/96 co-relation queries the response was YES. [2022-12-13 21:39:38,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17963 conditions, 8840 events. 6211/8840 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 738. Compared 47114 event pairs, 5306 based on Foata normal form. 0/3415 useless extension candidates. Maximal degree in co-relation 8979. Up to 8840 conditions per place. [2022-12-13 21:39:38,711 INFO L137 encePairwiseOnDemand]: 1014/1016 looper letters, 38 selfloop transitions, 1 changer transitions 0/39 dead transitions. [2022-12-13 21:39:38,711 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 39 transitions, 172 flow [2022-12-13 21:39:38,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:39:38,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:39:38,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1320 transitions. [2022-12-13 21:39:38,716 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4330708661417323 [2022-12-13 21:39:38,716 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1320 transitions. [2022-12-13 21:39:38,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1320 transitions. [2022-12-13 21:39:38,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:39:38,718 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1320 transitions. [2022-12-13 21:39:38,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 440.0) internal successors, (1320), 3 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:38,729 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1016.0) internal successors, (4064), 4 states have internal predecessors, (4064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:38,731 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1016.0) internal successors, (4064), 4 states have internal predecessors, (4064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:38,731 INFO L175 Difference]: Start difference. First operand has 43 places, 40 transitions, 98 flow. Second operand 3 states and 1320 transitions. [2022-12-13 21:39:38,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 39 transitions, 172 flow [2022-12-13 21:39:38,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 39 transitions, 170 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 21:39:38,733 INFO L231 Difference]: Finished difference. Result has 43 places, 39 transitions, 94 flow [2022-12-13 21:39:38,733 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1016, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=43, PETRI_TRANSITIONS=39} [2022-12-13 21:39:38,734 INFO L288 CegarLoopForPetriNet]: 54 programPoint places, -11 predicate places. [2022-12-13 21:39:38,734 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 39 transitions, 94 flow [2022-12-13 21:39:38,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 428.0) internal successors, (1284), 3 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:38,735 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:39:38,735 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 21:39:38,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 21:39:38,736 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-12-13 21:39:38,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:39:38,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1908929, now seen corresponding path program 1 times [2022-12-13 21:39:38,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:39:38,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484779423] [2022-12-13 21:39:38,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:39:38,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:39:38,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:39:38,822 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:39:38,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:39:38,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484779423] [2022-12-13 21:39:38,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484779423] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:39:38,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [920900851] [2022-12-13 21:39:38,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:39:38,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:39:38,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396f09d9-2c8b-43b8-98a8-7109a5d5f8f8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:39:38,825 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396f09d9-2c8b-43b8-98a8-7109a5d5f8f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:39:38,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396f09d9-2c8b-43b8-98a8-7109a5d5f8f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 21:39:38,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:39:38,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 21:39:38,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:39:38,929 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:39:38,929 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:39:38,942 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:39:38,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [920900851] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:39:38,943 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 21:39:38,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2022-12-13 21:39:38,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957973260] [2022-12-13 21:39:38,943 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 21:39:38,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:39:38,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:39:38,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:39:38,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:39:38,974 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 427 out of 1016 [2022-12-13 21:39:38,978 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 39 transitions, 94 flow. Second operand has 7 states, 7 states have (on average 428.14285714285717) internal successors, (2997), 7 states have internal predecessors, (2997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:38,978 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:39:38,979 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 427 of 1016 [2022-12-13 21:39:38,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:39:41,582 INFO L130 PetriNetUnfolder]: 15526/22097 cut-off events. [2022-12-13 21:39:41,582 INFO L131 PetriNetUnfolder]: For 240/240 co-relation queries the response was YES. [2022-12-13 21:39:41,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44891 conditions, 22097 events. 15526/22097 cut-off events. For 240/240 co-relation queries the response was YES. Maximal size of possible extension queue 1234. Compared 130428 event pairs, 13265 based on Foata normal form. 0/8536 useless extension candidates. Maximal degree in co-relation 44883. Up to 4422 conditions per place. [2022-12-13 21:39:41,662 INFO L137 encePairwiseOnDemand]: 1013/1016 looper letters, 177 selfloop transitions, 5 changer transitions 0/182 dead transitions. [2022-12-13 21:39:41,663 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 182 transitions, 774 flow [2022-12-13 21:39:41,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 21:39:41,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 21:39:41,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2747 transitions. [2022-12-13 21:39:41,669 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4506233595800525 [2022-12-13 21:39:41,669 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2747 transitions. [2022-12-13 21:39:41,669 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2747 transitions. [2022-12-13 21:39:41,671 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:39:41,671 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2747 transitions. [2022-12-13 21:39:41,677 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 457.8333333333333) internal successors, (2747), 6 states have internal predecessors, (2747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:41,686 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1016.0) internal successors, (7112), 7 states have internal predecessors, (7112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:41,689 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1016.0) internal successors, (7112), 7 states have internal predecessors, (7112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:41,689 INFO L175 Difference]: Start difference. First operand has 43 places, 39 transitions, 94 flow. Second operand 6 states and 2747 transitions. [2022-12-13 21:39:41,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 182 transitions, 774 flow [2022-12-13 21:39:41,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 182 transitions, 773 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 21:39:41,692 INFO L231 Difference]: Finished difference. Result has 50 places, 42 transitions, 129 flow [2022-12-13 21:39:41,693 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1016, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=129, PETRI_PLACES=50, PETRI_TRANSITIONS=42} [2022-12-13 21:39:41,693 INFO L288 CegarLoopForPetriNet]: 54 programPoint places, -4 predicate places. [2022-12-13 21:39:41,693 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 42 transitions, 129 flow [2022-12-13 21:39:41,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 428.14285714285717) internal successors, (2997), 7 states have internal predecessors, (2997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:41,695 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:39:41,695 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 21:39:41,701 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396f09d9-2c8b-43b8-98a8-7109a5d5f8f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 21:39:41,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396f09d9-2c8b-43b8-98a8-7109a5d5f8f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:39:41,897 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-12-13 21:39:41,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:39:41,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1832861378, now seen corresponding path program 1 times [2022-12-13 21:39:41,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:39:41,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697577400] [2022-12-13 21:39:41,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:39:41,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:39:41,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:39:42,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:39:42,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:39:42,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697577400] [2022-12-13 21:39:42,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697577400] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:39:42,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:39:42,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 21:39:42,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679341005] [2022-12-13 21:39:42,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:39:42,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:39:42,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:39:42,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:39:42,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:39:42,024 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 426 out of 1016 [2022-12-13 21:39:42,026 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 42 transitions, 129 flow. Second operand has 3 states, 3 states have (on average 427.6666666666667) internal successors, (1283), 3 states have internal predecessors, (1283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:42,026 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:39:42,026 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 426 of 1016 [2022-12-13 21:39:42,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:39:45,258 INFO L130 PetriNetUnfolder]: 20426/29177 cut-off events. [2022-12-13 21:39:45,258 INFO L131 PetriNetUnfolder]: For 241/241 co-relation queries the response was YES. [2022-12-13 21:39:45,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59236 conditions, 29177 events. 20426/29177 cut-off events. For 241/241 co-relation queries the response was YES. Maximal size of possible extension queue 1703. Compared 185671 event pairs, 13265 based on Foata normal form. 0/11827 useless extension candidates. Maximal degree in co-relation 59224. Up to 22098 conditions per place. [2022-12-13 21:39:45,365 INFO L137 encePairwiseOnDemand]: 1009/1016 looper letters, 67 selfloop transitions, 2 changer transitions 0/69 dead transitions. [2022-12-13 21:39:45,365 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 69 transitions, 326 flow [2022-12-13 21:39:45,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:39:45,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:39:45,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1348 transitions. [2022-12-13 21:39:45,367 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.442257217847769 [2022-12-13 21:39:45,367 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1348 transitions. [2022-12-13 21:39:45,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1348 transitions. [2022-12-13 21:39:45,368 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:39:45,368 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1348 transitions. [2022-12-13 21:39:45,369 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 449.3333333333333) internal successors, (1348), 3 states have internal predecessors, (1348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:45,372 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1016.0) internal successors, (4064), 4 states have internal predecessors, (4064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:45,373 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1016.0) internal successors, (4064), 4 states have internal predecessors, (4064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:45,373 INFO L175 Difference]: Start difference. First operand has 50 places, 42 transitions, 129 flow. Second operand 3 states and 1348 transitions. [2022-12-13 21:39:45,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 69 transitions, 326 flow [2022-12-13 21:39:45,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 69 transitions, 318 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-12-13 21:39:45,375 INFO L231 Difference]: Finished difference. Result has 52 places, 43 transitions, 141 flow [2022-12-13 21:39:45,375 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1016, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=141, PETRI_PLACES=52, PETRI_TRANSITIONS=43} [2022-12-13 21:39:45,376 INFO L288 CegarLoopForPetriNet]: 54 programPoint places, -2 predicate places. [2022-12-13 21:39:45,376 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 43 transitions, 141 flow [2022-12-13 21:39:45,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 427.6666666666667) internal successors, (1283), 3 states have internal predecessors, (1283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:45,377 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:39:45,377 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2022-12-13 21:39:45,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 21:39:45,377 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-12-13 21:39:45,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:39:45,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1038187789, now seen corresponding path program 2 times [2022-12-13 21:39:45,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:39:45,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707828453] [2022-12-13 21:39:45,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:39:45,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:39:45,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:39:45,460 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 21:39:45,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:39:45,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707828453] [2022-12-13 21:39:45,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707828453] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:39:45,461 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:39:45,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 21:39:45,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47647644] [2022-12-13 21:39:45,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:39:45,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 21:39:45,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:39:45,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 21:39:45,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 21:39:45,498 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 424 out of 1016 [2022-12-13 21:39:45,500 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 43 transitions, 141 flow. Second operand has 6 states, 6 states have (on average 425.0) internal successors, (2550), 6 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:45,501 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:39:45,501 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 424 of 1016 [2022-12-13 21:39:45,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:39:48,363 INFO L130 PetriNetUnfolder]: 16340/23340 cut-off events. [2022-12-13 21:39:48,363 INFO L131 PetriNetUnfolder]: For 3284/3284 co-relation queries the response was YES. [2022-12-13 21:39:48,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52637 conditions, 23340 events. 16340/23340 cut-off events. For 3284/3284 co-relation queries the response was YES. Maximal size of possible extension queue 1450. Compared 142134 event pairs, 14124 based on Foata normal form. 1/10629 useless extension candidates. Maximal degree in co-relation 52624. Up to 23337 conditions per place. [2022-12-13 21:39:48,429 INFO L137 encePairwiseOnDemand]: 1013/1016 looper letters, 36 selfloop transitions, 7 changer transitions 0/43 dead transitions. [2022-12-13 21:39:48,429 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 43 transitions, 212 flow [2022-12-13 21:39:48,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 21:39:48,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 21:39:48,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2587 transitions. [2022-12-13 21:39:48,432 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4243766404199475 [2022-12-13 21:39:48,432 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2587 transitions. [2022-12-13 21:39:48,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2587 transitions. [2022-12-13 21:39:48,433 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:39:48,433 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2587 transitions. [2022-12-13 21:39:48,436 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 431.1666666666667) internal successors, (2587), 6 states have internal predecessors, (2587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:48,441 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1016.0) internal successors, (7112), 7 states have internal predecessors, (7112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:48,442 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1016.0) internal successors, (7112), 7 states have internal predecessors, (7112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:48,442 INFO L175 Difference]: Start difference. First operand has 52 places, 43 transitions, 141 flow. Second operand 6 states and 2587 transitions. [2022-12-13 21:39:48,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 43 transitions, 212 flow [2022-12-13 21:39:48,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 43 transitions, 202 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-12-13 21:39:48,444 INFO L231 Difference]: Finished difference. Result has 50 places, 43 transitions, 132 flow [2022-12-13 21:39:48,445 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1016, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=132, PETRI_PLACES=50, PETRI_TRANSITIONS=43} [2022-12-13 21:39:48,445 INFO L288 CegarLoopForPetriNet]: 54 programPoint places, -4 predicate places. [2022-12-13 21:39:48,445 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 43 transitions, 132 flow [2022-12-13 21:39:48,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 425.0) internal successors, (2550), 6 states have internal predecessors, (2550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:48,446 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:39:48,446 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-13 21:39:48,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 21:39:48,446 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-12-13 21:39:48,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:39:48,446 INFO L85 PathProgramCache]: Analyzing trace with hash 984130062, now seen corresponding path program 1 times [2022-12-13 21:39:48,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:39:48,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532816281] [2022-12-13 21:39:48,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:39:48,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:39:48,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:39:48,504 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 21:39:48,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:39:48,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532816281] [2022-12-13 21:39:48,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532816281] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:39:48,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:39:48,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 21:39:48,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597815711] [2022-12-13 21:39:48,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:39:48,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:39:48,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:39:48,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:39:48,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:39:48,520 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 426 out of 1016 [2022-12-13 21:39:48,521 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 43 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 428.0) internal successors, (1284), 3 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:48,521 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:39:48,521 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 426 of 1016 [2022-12-13 21:39:48,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:39:50,207 INFO L130 PetriNetUnfolder]: 12255/17506 cut-off events. [2022-12-13 21:39:50,207 INFO L131 PetriNetUnfolder]: For 1590/1590 co-relation queries the response was YES. [2022-12-13 21:39:50,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39045 conditions, 17506 events. 12255/17506 cut-off events. For 1590/1590 co-relation queries the response was YES. Maximal size of possible extension queue 1050. Compared 101477 event pairs, 10593 based on Foata normal form. 1/7973 useless extension candidates. Maximal degree in co-relation 39036. Up to 17506 conditions per place. [2022-12-13 21:39:50,258 INFO L137 encePairwiseOnDemand]: 1013/1016 looper letters, 40 selfloop transitions, 2 changer transitions 0/42 dead transitions. [2022-12-13 21:39:50,258 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 42 transitions, 212 flow [2022-12-13 21:39:50,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:39:50,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:39:50,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1317 transitions. [2022-12-13 21:39:50,260 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43208661417322836 [2022-12-13 21:39:50,261 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1317 transitions. [2022-12-13 21:39:50,261 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1317 transitions. [2022-12-13 21:39:50,261 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:39:50,261 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1317 transitions. [2022-12-13 21:39:50,264 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 439.0) internal successors, (1317), 3 states have internal predecessors, (1317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:50,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1016.0) internal successors, (4064), 4 states have internal predecessors, (4064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:50,268 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1016.0) internal successors, (4064), 4 states have internal predecessors, (4064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:50,268 INFO L175 Difference]: Start difference. First operand has 50 places, 43 transitions, 132 flow. Second operand 3 states and 1317 transitions. [2022-12-13 21:39:50,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 42 transitions, 212 flow [2022-12-13 21:39:50,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 42 transitions, 199 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-12-13 21:39:50,270 INFO L231 Difference]: Finished difference. Result has 48 places, 42 transitions, 119 flow [2022-12-13 21:39:50,270 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1016, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=119, PETRI_PLACES=48, PETRI_TRANSITIONS=42} [2022-12-13 21:39:50,271 INFO L288 CegarLoopForPetriNet]: 54 programPoint places, -6 predicate places. [2022-12-13 21:39:50,271 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 42 transitions, 119 flow [2022-12-13 21:39:50,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 428.0) internal successors, (1284), 3 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:50,272 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:39:50,272 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:39:50,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 21:39:50,272 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-12-13 21:39:50,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:39:50,272 INFO L85 PathProgramCache]: Analyzing trace with hash 2064996573, now seen corresponding path program 1 times [2022-12-13 21:39:50,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:39:50,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95501658] [2022-12-13 21:39:50,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:39:50,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:39:50,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:39:50,328 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 21:39:50,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:39:50,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95501658] [2022-12-13 21:39:50,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95501658] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:39:50,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844724253] [2022-12-13 21:39:50,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:39:50,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:39:50,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396f09d9-2c8b-43b8-98a8-7109a5d5f8f8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:39:50,330 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396f09d9-2c8b-43b8-98a8-7109a5d5f8f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:39:50,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396f09d9-2c8b-43b8-98a8-7109a5d5f8f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 21:39:50,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:39:50,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 21:39:50,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:39:50,438 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 21:39:50,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 21:39:50,448 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 21:39:50,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844724253] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 21:39:50,449 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 21:39:50,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-12-13 21:39:50,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736593092] [2022-12-13 21:39:50,449 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 21:39:50,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 21:39:50,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:39:50,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 21:39:50,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2022-12-13 21:39:50,491 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 424 out of 1016 [2022-12-13 21:39:50,494 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 42 transitions, 119 flow. Second operand has 7 states, 7 states have (on average 425.85714285714283) internal successors, (2981), 7 states have internal predecessors, (2981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:50,495 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:39:50,495 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 424 of 1016 [2022-12-13 21:39:50,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:39:51,146 INFO L130 PetriNetUnfolder]: 4085/5838 cut-off events. [2022-12-13 21:39:51,146 INFO L131 PetriNetUnfolder]: For 530/530 co-relation queries the response was YES. [2022-12-13 21:39:51,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13025 conditions, 5838 events. 4085/5838 cut-off events. For 530/530 co-relation queries the response was YES. Maximal size of possible extension queue 460. Compared 29276 event pairs, 3531 based on Foata normal form. 2/2662 useless extension candidates. Maximal degree in co-relation 13016. Up to 5836 conditions per place. [2022-12-13 21:39:51,160 INFO L137 encePairwiseOnDemand]: 1013/1016 looper letters, 36 selfloop transitions, 4 changer transitions 0/40 dead transitions. [2022-12-13 21:39:51,160 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 40 transitions, 191 flow [2022-12-13 21:39:51,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 21:39:51,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 21:39:51,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2161 transitions. [2022-12-13 21:39:51,163 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4253937007874016 [2022-12-13 21:39:51,163 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2161 transitions. [2022-12-13 21:39:51,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2161 transitions. [2022-12-13 21:39:51,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:39:51,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2161 transitions. [2022-12-13 21:39:51,166 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 432.2) internal successors, (2161), 5 states have internal predecessors, (2161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:51,169 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1016.0) internal successors, (6096), 6 states have internal predecessors, (6096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:51,170 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1016.0) internal successors, (6096), 6 states have internal predecessors, (6096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:51,170 INFO L175 Difference]: Start difference. First operand has 48 places, 42 transitions, 119 flow. Second operand 5 states and 2161 transitions. [2022-12-13 21:39:51,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 40 transitions, 191 flow [2022-12-13 21:39:51,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 40 transitions, 187 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 21:39:51,171 INFO L231 Difference]: Finished difference. Result has 50 places, 40 transitions, 115 flow [2022-12-13 21:39:51,171 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1016, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=115, PETRI_PLACES=50, PETRI_TRANSITIONS=40} [2022-12-13 21:39:51,172 INFO L288 CegarLoopForPetriNet]: 54 programPoint places, -4 predicate places. [2022-12-13 21:39:51,172 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 40 transitions, 115 flow [2022-12-13 21:39:51,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 425.85714285714283) internal successors, (2981), 7 states have internal predecessors, (2981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:51,173 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:39:51,173 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2022-12-13 21:39:51,177 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396f09d9-2c8b-43b8-98a8-7109a5d5f8f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-13 21:39:51,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396f09d9-2c8b-43b8-98a8-7109a5d5f8f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:39:51,374 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-12-13 21:39:51,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:39:51,375 INFO L85 PathProgramCache]: Analyzing trace with hash 542724674, now seen corresponding path program 1 times [2022-12-13 21:39:51,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:39:51,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341238401] [2022-12-13 21:39:51,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:39:51,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:39:51,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:39:51,460 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-13 21:39:51,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:39:51,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341238401] [2022-12-13 21:39:51,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341238401] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:39:51,460 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:39:51,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 21:39:51,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917890066] [2022-12-13 21:39:51,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:39:51,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:39:51,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:39:51,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:39:51,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:39:51,476 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 428 out of 1016 [2022-12-13 21:39:51,478 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 40 transitions, 115 flow. Second operand has 3 states, 3 states have (on average 430.3333333333333) internal successors, (1291), 3 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:51,478 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:39:51,478 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 428 of 1016 [2022-12-13 21:39:51,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:39:51,982 INFO L130 PetriNetUnfolder]: 3303/4730 cut-off events. [2022-12-13 21:39:51,982 INFO L131 PetriNetUnfolder]: For 466/466 co-relation queries the response was YES. [2022-12-13 21:39:51,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10536 conditions, 4730 events. 3303/4730 cut-off events. For 466/466 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 22745 event pairs, 2821 based on Foata normal form. 0/2278 useless extension candidates. Maximal degree in co-relation 10527. Up to 4730 conditions per place. [2022-12-13 21:39:51,993 INFO L137 encePairwiseOnDemand]: 1013/1016 looper letters, 37 selfloop transitions, 1 changer transitions 0/38 dead transitions. [2022-12-13 21:39:51,994 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 38 transitions, 185 flow [2022-12-13 21:39:51,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:39:51,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:39:51,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1321 transitions. [2022-12-13 21:39:51,996 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4333989501312336 [2022-12-13 21:39:51,996 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1321 transitions. [2022-12-13 21:39:51,996 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1321 transitions. [2022-12-13 21:39:51,997 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:39:51,997 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1321 transitions. [2022-12-13 21:39:51,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 440.3333333333333) internal successors, (1321), 3 states have internal predecessors, (1321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:52,000 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1016.0) internal successors, (4064), 4 states have internal predecessors, (4064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:52,001 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1016.0) internal successors, (4064), 4 states have internal predecessors, (4064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:52,001 INFO L175 Difference]: Start difference. First operand has 50 places, 40 transitions, 115 flow. Second operand 3 states and 1321 transitions. [2022-12-13 21:39:52,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 38 transitions, 185 flow [2022-12-13 21:39:52,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 38 transitions, 177 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 21:39:52,002 INFO L231 Difference]: Finished difference. Result has 46 places, 38 transitions, 103 flow [2022-12-13 21:39:52,002 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1016, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=103, PETRI_PLACES=46, PETRI_TRANSITIONS=38} [2022-12-13 21:39:52,003 INFO L288 CegarLoopForPetriNet]: 54 programPoint places, -8 predicate places. [2022-12-13 21:39:52,003 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 38 transitions, 103 flow [2022-12-13 21:39:52,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 430.3333333333333) internal successors, (1291), 3 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:52,004 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:39:52,004 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2022-12-13 21:39:52,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 21:39:52,004 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-12-13 21:39:52,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:39:52,004 INFO L85 PathProgramCache]: Analyzing trace with hash 542724702, now seen corresponding path program 1 times [2022-12-13 21:39:52,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:39:52,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604951534] [2022-12-13 21:39:52,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:39:52,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:39:52,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:39:52,054 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:39:52,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:39:52,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604951534] [2022-12-13 21:39:52,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604951534] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:39:52,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1269482343] [2022-12-13 21:39:52,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:39:52,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:39:52,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396f09d9-2c8b-43b8-98a8-7109a5d5f8f8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:39:52,056 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396f09d9-2c8b-43b8-98a8-7109a5d5f8f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:39:52,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396f09d9-2c8b-43b8-98a8-7109a5d5f8f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 21:39:52,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:39:52,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 21:39:52,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:39:52,163 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-13 21:39:52,163 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:39:52,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1269482343] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:39:52,163 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 21:39:52,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2022-12-13 21:39:52,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388906893] [2022-12-13 21:39:52,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:39:52,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:39:52,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:39:52,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:39:52,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 21:39:52,180 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 428 out of 1016 [2022-12-13 21:39:52,181 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 38 transitions, 103 flow. Second operand has 3 states, 3 states have (on average 430.3333333333333) internal successors, (1291), 3 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:52,181 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:39:52,181 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 428 of 1016 [2022-12-13 21:39:52,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:39:52,634 INFO L130 PetriNetUnfolder]: 2601/3734 cut-off events. [2022-12-13 21:39:52,634 INFO L131 PetriNetUnfolder]: For 402/402 co-relation queries the response was YES. [2022-12-13 21:39:52,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8298 conditions, 3734 events. 2601/3734 cut-off events. For 402/402 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 17186 event pairs, 2187 based on Foata normal form. 0/1920 useless extension candidates. Maximal degree in co-relation 8289. Up to 3734 conditions per place. [2022-12-13 21:39:52,643 INFO L137 encePairwiseOnDemand]: 1013/1016 looper letters, 35 selfloop transitions, 1 changer transitions 0/36 dead transitions. [2022-12-13 21:39:52,643 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 36 transitions, 169 flow [2022-12-13 21:39:52,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:39:52,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:39:52,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1319 transitions. [2022-12-13 21:39:52,645 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.432742782152231 [2022-12-13 21:39:52,645 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1319 transitions. [2022-12-13 21:39:52,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1319 transitions. [2022-12-13 21:39:52,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:39:52,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1319 transitions. [2022-12-13 21:39:52,647 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 439.6666666666667) internal successors, (1319), 3 states have internal predecessors, (1319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:52,658 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1016.0) internal successors, (4064), 4 states have internal predecessors, (4064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:52,658 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1016.0) internal successors, (4064), 4 states have internal predecessors, (4064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:52,658 INFO L175 Difference]: Start difference. First operand has 46 places, 38 transitions, 103 flow. Second operand 3 states and 1319 transitions. [2022-12-13 21:39:52,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 36 transitions, 169 flow [2022-12-13 21:39:52,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 36 transitions, 168 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 21:39:52,659 INFO L231 Difference]: Finished difference. Result has 45 places, 36 transitions, 98 flow [2022-12-13 21:39:52,659 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1016, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=45, PETRI_TRANSITIONS=36} [2022-12-13 21:39:52,659 INFO L288 CegarLoopForPetriNet]: 54 programPoint places, -9 predicate places. [2022-12-13 21:39:52,659 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 36 transitions, 98 flow [2022-12-13 21:39:52,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 430.3333333333333) internal successors, (1291), 3 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:52,660 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:39:52,660 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2022-12-13 21:39:52,665 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396f09d9-2c8b-43b8-98a8-7109a5d5f8f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 21:39:52,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396f09d9-2c8b-43b8-98a8-7109a5d5f8f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-12-13 21:39:52,861 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-12-13 21:39:52,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:39:52,862 INFO L85 PathProgramCache]: Analyzing trace with hash 542724713, now seen corresponding path program 1 times [2022-12-13 21:39:52,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:39:52,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409906750] [2022-12-13 21:39:52,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:39:52,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:39:52,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:39:52,968 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:39:52,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:39:52,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409906750] [2022-12-13 21:39:52,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409906750] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:39:52,969 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:39:52,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 21:39:52,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088173727] [2022-12-13 21:39:52,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:39:52,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:39:52,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:39:52,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:39:52,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:39:52,986 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 426 out of 1016 [2022-12-13 21:39:52,986 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 36 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 428.3333333333333) internal successors, (1285), 3 states have internal predecessors, (1285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:52,987 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:39:52,987 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 426 of 1016 [2022-12-13 21:39:52,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:39:53,394 INFO L130 PetriNetUnfolder]: 2327/3346 cut-off events. [2022-12-13 21:39:53,394 INFO L131 PetriNetUnfolder]: For 402/402 co-relation queries the response was YES. [2022-12-13 21:39:53,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7392 conditions, 3346 events. 2327/3346 cut-off events. For 402/402 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 15076 event pairs, 1943 based on Foata normal form. 0/1794 useless extension candidates. Maximal degree in co-relation 7382. Up to 3346 conditions per place. [2022-12-13 21:39:53,402 INFO L137 encePairwiseOnDemand]: 1014/1016 looper letters, 34 selfloop transitions, 1 changer transitions 0/35 dead transitions. [2022-12-13 21:39:53,402 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 35 transitions, 164 flow [2022-12-13 21:39:53,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:39:53,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:39:53,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1311 transitions. [2022-12-13 21:39:53,404 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4301181102362205 [2022-12-13 21:39:53,405 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1311 transitions. [2022-12-13 21:39:53,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1311 transitions. [2022-12-13 21:39:53,405 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:39:53,405 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1311 transitions. [2022-12-13 21:39:53,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 437.0) internal successors, (1311), 3 states have internal predecessors, (1311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:53,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1016.0) internal successors, (4064), 4 states have internal predecessors, (4064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:53,408 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1016.0) internal successors, (4064), 4 states have internal predecessors, (4064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:53,408 INFO L175 Difference]: Start difference. First operand has 45 places, 36 transitions, 98 flow. Second operand 3 states and 1311 transitions. [2022-12-13 21:39:53,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 35 transitions, 164 flow [2022-12-13 21:39:53,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 35 transitions, 163 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 21:39:53,409 INFO L231 Difference]: Finished difference. Result has 45 places, 35 transitions, 95 flow [2022-12-13 21:39:53,409 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1016, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=95, PETRI_PLACES=45, PETRI_TRANSITIONS=35} [2022-12-13 21:39:53,410 INFO L288 CegarLoopForPetriNet]: 54 programPoint places, -9 predicate places. [2022-12-13 21:39:53,410 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 35 transitions, 95 flow [2022-12-13 21:39:53,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 428.3333333333333) internal successors, (1285), 3 states have internal predecessors, (1285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:53,410 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:39:53,410 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2022-12-13 21:39:53,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 21:39:53,410 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-12-13 21:39:53,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:39:53,411 INFO L85 PathProgramCache]: Analyzing trace with hash 542724701, now seen corresponding path program 2 times [2022-12-13 21:39:53,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:39:53,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6109473] [2022-12-13 21:39:53,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:39:53,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:39:53,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:39:53,464 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:39:53,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:39:53,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6109473] [2022-12-13 21:39:53,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6109473] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:39:53,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041324472] [2022-12-13 21:39:53,464 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 21:39:53,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:39:53,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396f09d9-2c8b-43b8-98a8-7109a5d5f8f8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:39:53,466 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396f09d9-2c8b-43b8-98a8-7109a5d5f8f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:39:53,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396f09d9-2c8b-43b8-98a8-7109a5d5f8f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 21:39:53,553 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 21:39:53,553 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 21:39:53,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 21:39:53,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:39:53,568 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-13 21:39:53,568 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:39:53,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041324472] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:39:53,568 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 21:39:53,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2022-12-13 21:39:53,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110980479] [2022-12-13 21:39:53,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:39:53,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:39:53,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:39:53,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:39:53,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 21:39:53,582 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 428 out of 1016 [2022-12-13 21:39:53,583 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 35 transitions, 95 flow. Second operand has 3 states, 3 states have (on average 430.3333333333333) internal successors, (1291), 3 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:53,583 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:39:53,583 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 428 of 1016 [2022-12-13 21:39:53,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:39:53,883 INFO L130 PetriNetUnfolder]: 1801/2598 cut-off events. [2022-12-13 21:39:53,883 INFO L131 PetriNetUnfolder]: For 352/352 co-relation queries the response was YES. [2022-12-13 21:39:53,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5698 conditions, 2598 events. 1801/2598 cut-off events. For 352/352 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 11083 event pairs, 1477 based on Foata normal form. 0/1494 useless extension candidates. Maximal degree in co-relation 5687. Up to 2598 conditions per place. [2022-12-13 21:39:53,889 INFO L137 encePairwiseOnDemand]: 1013/1016 looper letters, 32 selfloop transitions, 1 changer transitions 0/33 dead transitions. [2022-12-13 21:39:53,889 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 33 transitions, 155 flow [2022-12-13 21:39:53,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:39:53,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:39:53,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1316 transitions. [2022-12-13 21:39:53,891 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.431758530183727 [2022-12-13 21:39:53,891 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1316 transitions. [2022-12-13 21:39:53,892 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1316 transitions. [2022-12-13 21:39:53,892 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:39:53,892 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1316 transitions. [2022-12-13 21:39:53,894 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 438.6666666666667) internal successors, (1316), 3 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:53,898 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1016.0) internal successors, (4064), 4 states have internal predecessors, (4064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:53,898 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1016.0) internal successors, (4064), 4 states have internal predecessors, (4064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:53,898 INFO L175 Difference]: Start difference. First operand has 45 places, 35 transitions, 95 flow. Second operand 3 states and 1316 transitions. [2022-12-13 21:39:53,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 33 transitions, 155 flow [2022-12-13 21:39:53,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 33 transitions, 154 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 21:39:53,899 INFO L231 Difference]: Finished difference. Result has 44 places, 33 transitions, 90 flow [2022-12-13 21:39:53,899 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1016, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=44, PETRI_TRANSITIONS=33} [2022-12-13 21:39:53,900 INFO L288 CegarLoopForPetriNet]: 54 programPoint places, -10 predicate places. [2022-12-13 21:39:53,900 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 33 transitions, 90 flow [2022-12-13 21:39:53,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 430.3333333333333) internal successors, (1291), 3 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:53,901 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:39:53,901 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2022-12-13 21:39:53,905 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396f09d9-2c8b-43b8-98a8-7109a5d5f8f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 21:39:54,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396f09d9-2c8b-43b8-98a8-7109a5d5f8f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-12-13 21:39:54,102 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-12-13 21:39:54,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:39:54,102 INFO L85 PathProgramCache]: Analyzing trace with hash 542724700, now seen corresponding path program 1 times [2022-12-13 21:39:54,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:39:54,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704678058] [2022-12-13 21:39:54,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:39:54,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:39:54,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:39:54,162 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:39:54,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:39:54,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704678058] [2022-12-13 21:39:54,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704678058] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:39:54,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1908791068] [2022-12-13 21:39:54,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:39:54,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:39:54,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396f09d9-2c8b-43b8-98a8-7109a5d5f8f8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:39:54,164 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396f09d9-2c8b-43b8-98a8-7109a5d5f8f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:39:54,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396f09d9-2c8b-43b8-98a8-7109a5d5f8f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 21:39:54,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:39:54,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 21:39:54,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:39:54,254 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-13 21:39:54,254 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:39:54,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1908791068] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:39:54,254 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 21:39:54,254 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2022-12-13 21:39:54,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049662941] [2022-12-13 21:39:54,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:39:54,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:39:54,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:39:54,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:39:54,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 21:39:54,266 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 428 out of 1016 [2022-12-13 21:39:54,266 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 33 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 430.3333333333333) internal successors, (1291), 3 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:54,267 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:39:54,267 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 428 of 1016 [2022-12-13 21:39:54,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:39:54,501 INFO L130 PetriNetUnfolder]: 1343/1946 cut-off events. [2022-12-13 21:39:54,501 INFO L131 PetriNetUnfolder]: For 302/302 co-relation queries the response was YES. [2022-12-13 21:39:54,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4228 conditions, 1946 events. 1343/1946 cut-off events. For 302/302 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 7815 event pairs, 1075 based on Foata normal form. 0/1218 useless extension candidates. Maximal degree in co-relation 4216. Up to 1946 conditions per place. [2022-12-13 21:39:54,506 INFO L137 encePairwiseOnDemand]: 1013/1016 looper letters, 30 selfloop transitions, 1 changer transitions 0/31 dead transitions. [2022-12-13 21:39:54,506 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 31 transitions, 146 flow [2022-12-13 21:39:54,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:39:54,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:39:54,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1314 transitions. [2022-12-13 21:39:54,508 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4311023622047244 [2022-12-13 21:39:54,508 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1314 transitions. [2022-12-13 21:39:54,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1314 transitions. [2022-12-13 21:39:54,509 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:39:54,509 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1314 transitions. [2022-12-13 21:39:54,510 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 438.0) internal successors, (1314), 3 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:54,512 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1016.0) internal successors, (4064), 4 states have internal predecessors, (4064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:54,512 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1016.0) internal successors, (4064), 4 states have internal predecessors, (4064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:54,512 INFO L175 Difference]: Start difference. First operand has 44 places, 33 transitions, 90 flow. Second operand 3 states and 1314 transitions. [2022-12-13 21:39:54,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 31 transitions, 146 flow [2022-12-13 21:39:54,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 31 transitions, 145 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 21:39:54,513 INFO L231 Difference]: Finished difference. Result has 43 places, 31 transitions, 85 flow [2022-12-13 21:39:54,513 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1016, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=85, PETRI_PLACES=43, PETRI_TRANSITIONS=31} [2022-12-13 21:39:54,513 INFO L288 CegarLoopForPetriNet]: 54 programPoint places, -11 predicate places. [2022-12-13 21:39:54,513 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 31 transitions, 85 flow [2022-12-13 21:39:54,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 430.3333333333333) internal successors, (1291), 3 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:54,513 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:39:54,513 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:39:54,517 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396f09d9-2c8b-43b8-98a8-7109a5d5f8f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 21:39:54,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396f09d9-2c8b-43b8-98a8-7109a5d5f8f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-13 21:39:54,715 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-12-13 21:39:54,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:39:54,716 INFO L85 PathProgramCache]: Analyzing trace with hash -356390235, now seen corresponding path program 1 times [2022-12-13 21:39:54,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:39:54,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968030878] [2022-12-13 21:39:54,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:39:54,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:39:54,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:39:54,772 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:39:54,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:39:54,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968030878] [2022-12-13 21:39:54,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968030878] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:39:54,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:39:54,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 21:39:54,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039813058] [2022-12-13 21:39:54,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:39:54,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:39:54,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:39:54,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:39:54,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:39:54,787 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 428 out of 1016 [2022-12-13 21:39:54,788 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 31 transitions, 85 flow. Second operand has 3 states, 3 states have (on average 430.6666666666667) internal successors, (1292), 3 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:54,788 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:39:54,788 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 428 of 1016 [2022-12-13 21:39:54,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:39:54,968 INFO L130 PetriNetUnfolder]: 956/1391 cut-off events. [2022-12-13 21:39:54,969 INFO L131 PetriNetUnfolder]: For 212/212 co-relation queries the response was YES. [2022-12-13 21:39:54,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3037 conditions, 1391 events. 956/1391 cut-off events. For 212/212 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 5125 event pairs, 740 based on Foata normal form. 0/929 useless extension candidates. Maximal degree in co-relation 3024. Up to 1391 conditions per place. [2022-12-13 21:39:54,972 INFO L137 encePairwiseOnDemand]: 1013/1016 looper letters, 28 selfloop transitions, 1 changer transitions 0/29 dead transitions. [2022-12-13 21:39:54,972 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 29 transitions, 139 flow [2022-12-13 21:39:54,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:39:54,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:39:54,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1312 transitions. [2022-12-13 21:39:54,974 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4304461942257218 [2022-12-13 21:39:54,974 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1312 transitions. [2022-12-13 21:39:54,975 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1312 transitions. [2022-12-13 21:39:54,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:39:54,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1312 transitions. [2022-12-13 21:39:54,976 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 437.3333333333333) internal successors, (1312), 3 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:54,978 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1016.0) internal successors, (4064), 4 states have internal predecessors, (4064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:54,978 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1016.0) internal successors, (4064), 4 states have internal predecessors, (4064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:54,978 INFO L175 Difference]: Start difference. First operand has 43 places, 31 transitions, 85 flow. Second operand 3 states and 1312 transitions. [2022-12-13 21:39:54,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 29 transitions, 139 flow [2022-12-13 21:39:54,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 29 transitions, 138 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 21:39:54,979 INFO L231 Difference]: Finished difference. Result has 42 places, 29 transitions, 82 flow [2022-12-13 21:39:54,979 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1016, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=82, PETRI_PLACES=42, PETRI_TRANSITIONS=29} [2022-12-13 21:39:54,979 INFO L288 CegarLoopForPetriNet]: 54 programPoint places, -12 predicate places. [2022-12-13 21:39:54,979 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 29 transitions, 82 flow [2022-12-13 21:39:54,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 430.6666666666667) internal successors, (1292), 3 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:54,979 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:39:54,980 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:39:54,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 21:39:54,980 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-12-13 21:39:54,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:39:54,980 INFO L85 PathProgramCache]: Analyzing trace with hash -356390177, now seen corresponding path program 1 times [2022-12-13 21:39:54,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:39:54,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37604620] [2022-12-13 21:39:54,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:39:54,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:39:54,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:39:55,026 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:39:55,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:39:55,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37604620] [2022-12-13 21:39:55,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37604620] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:39:55,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:39:55,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 21:39:55,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456492709] [2022-12-13 21:39:55,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:39:55,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:39:55,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:39:55,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:39:55,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:39:55,037 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 426 out of 1016 [2022-12-13 21:39:55,038 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 29 transitions, 82 flow. Second operand has 3 states, 3 states have (on average 428.6666666666667) internal successors, (1286), 3 states have internal predecessors, (1286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:55,038 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:39:55,038 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 426 of 1016 [2022-12-13 21:39:55,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:39:55,357 INFO L130 PetriNetUnfolder]: 1346/1961 cut-off events. [2022-12-13 21:39:55,357 INFO L131 PetriNetUnfolder]: For 316/316 co-relation queries the response was YES. [2022-12-13 21:39:55,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4270 conditions, 1961 events. 1346/1961 cut-off events. For 316/316 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 8116 event pairs, 740 based on Foata normal form. 0/1323 useless extension candidates. Maximal degree in co-relation 4256. Up to 1392 conditions per place. [2022-12-13 21:39:55,361 INFO L137 encePairwiseOnDemand]: 1012/1016 looper letters, 45 selfloop transitions, 2 changer transitions 0/47 dead transitions. [2022-12-13 21:39:55,361 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 47 transitions, 222 flow [2022-12-13 21:39:55,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:39:55,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:39:55,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1323 transitions. [2022-12-13 21:39:55,363 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4340551181102362 [2022-12-13 21:39:55,363 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1323 transitions. [2022-12-13 21:39:55,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1323 transitions. [2022-12-13 21:39:55,364 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:39:55,364 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1323 transitions. [2022-12-13 21:39:55,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 441.0) internal successors, (1323), 3 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:55,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1016.0) internal successors, (4064), 4 states have internal predecessors, (4064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:55,367 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1016.0) internal successors, (4064), 4 states have internal predecessors, (4064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:55,367 INFO L175 Difference]: Start difference. First operand has 42 places, 29 transitions, 82 flow. Second operand 3 states and 1323 transitions. [2022-12-13 21:39:55,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 47 transitions, 222 flow [2022-12-13 21:39:55,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 47 transitions, 221 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 21:39:55,368 INFO L231 Difference]: Finished difference. Result has 44 places, 30 transitions, 95 flow [2022-12-13 21:39:55,368 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1016, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=95, PETRI_PLACES=44, PETRI_TRANSITIONS=30} [2022-12-13 21:39:55,368 INFO L288 CegarLoopForPetriNet]: 54 programPoint places, -10 predicate places. [2022-12-13 21:39:55,368 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 30 transitions, 95 flow [2022-12-13 21:39:55,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 428.6666666666667) internal successors, (1286), 3 states have internal predecessors, (1286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:55,369 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:39:55,369 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:39:55,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 21:39:55,369 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-12-13 21:39:55,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:39:55,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1836807399, now seen corresponding path program 1 times [2022-12-13 21:39:55,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:39:55,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366150270] [2022-12-13 21:39:55,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:39:55,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:39:55,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:39:55,424 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:39:55,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:39:55,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366150270] [2022-12-13 21:39:55,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366150270] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:39:55,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344473349] [2022-12-13 21:39:55,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:39:55,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:39:55,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396f09d9-2c8b-43b8-98a8-7109a5d5f8f8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:39:55,425 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396f09d9-2c8b-43b8-98a8-7109a5d5f8f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:39:55,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396f09d9-2c8b-43b8-98a8-7109a5d5f8f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 21:39:55,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:39:55,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 21:39:55,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:39:55,522 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-13 21:39:55,522 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:39:55,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344473349] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:39:55,522 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 21:39:55,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2022-12-13 21:39:55,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328038978] [2022-12-13 21:39:55,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:39:55,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:39:55,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:39:55,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:39:55,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 21:39:55,537 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 428 out of 1016 [2022-12-13 21:39:55,538 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 30 transitions, 95 flow. Second operand has 3 states, 3 states have (on average 431.0) internal successors, (1293), 3 states have internal predecessors, (1293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:55,538 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:39:55,538 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 428 of 1016 [2022-12-13 21:39:55,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:39:55,742 INFO L130 PetriNetUnfolder]: 955/1398 cut-off events. [2022-12-13 21:39:55,743 INFO L131 PetriNetUnfolder]: For 505/505 co-relation queries the response was YES. [2022-12-13 21:39:55,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3393 conditions, 1398 events. 955/1398 cut-off events. For 505/505 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 5142 event pairs, 735 based on Foata normal form. 0/1148 useless extension candidates. Maximal degree in co-relation 3378. Up to 1398 conditions per place. [2022-12-13 21:39:55,746 INFO L137 encePairwiseOnDemand]: 1013/1016 looper letters, 27 selfloop transitions, 1 changer transitions 0/28 dead transitions. [2022-12-13 21:39:55,746 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 28 transitions, 145 flow [2022-12-13 21:39:55,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:39:55,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:39:55,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1310 transitions. [2022-12-13 21:39:55,748 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42979002624671914 [2022-12-13 21:39:55,748 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1310 transitions. [2022-12-13 21:39:55,748 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1310 transitions. [2022-12-13 21:39:55,749 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:39:55,749 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1310 transitions. [2022-12-13 21:39:55,750 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 436.6666666666667) internal successors, (1310), 3 states have internal predecessors, (1310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:55,751 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1016.0) internal successors, (4064), 4 states have internal predecessors, (4064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:55,752 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1016.0) internal successors, (4064), 4 states have internal predecessors, (4064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:55,752 INFO L175 Difference]: Start difference. First operand has 44 places, 30 transitions, 95 flow. Second operand 3 states and 1310 transitions. [2022-12-13 21:39:55,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 28 transitions, 145 flow [2022-12-13 21:39:55,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 28 transitions, 143 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 21:39:55,753 INFO L231 Difference]: Finished difference. Result has 43 places, 28 transitions, 89 flow [2022-12-13 21:39:55,753 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1016, PETRI_DIFFERENCE_MINUEND_FLOW=87, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=89, PETRI_PLACES=43, PETRI_TRANSITIONS=28} [2022-12-13 21:39:55,753 INFO L288 CegarLoopForPetriNet]: 54 programPoint places, -11 predicate places. [2022-12-13 21:39:55,753 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 28 transitions, 89 flow [2022-12-13 21:39:55,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 431.0) internal successors, (1293), 3 states have internal predecessors, (1293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:55,753 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:39:55,753 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:39:55,758 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396f09d9-2c8b-43b8-98a8-7109a5d5f8f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 21:39:55,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396f09d9-2c8b-43b8-98a8-7109a5d5f8f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-13 21:39:55,955 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-12-13 21:39:55,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:39:55,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1836807371, now seen corresponding path program 1 times [2022-12-13 21:39:55,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:39:55,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339507427] [2022-12-13 21:39:55,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:39:55,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:39:56,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:39:56,034 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:39:56,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:39:56,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339507427] [2022-12-13 21:39:56,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339507427] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 21:39:56,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451004321] [2022-12-13 21:39:56,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:39:56,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 21:39:56,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396f09d9-2c8b-43b8-98a8-7109a5d5f8f8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 21:39:56,036 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396f09d9-2c8b-43b8-98a8-7109a5d5f8f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 21:39:56,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396f09d9-2c8b-43b8-98a8-7109a5d5f8f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 21:39:56,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:39:56,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 21:39:56,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 21:39:56,134 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:39:56,135 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 21:39:56,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1451004321] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:39:56,135 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 21:39:56,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-12-13 21:39:56,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391234033] [2022-12-13 21:39:56,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:39:56,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 21:39:56,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:39:56,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 21:39:56,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 21:39:56,149 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 426 out of 1016 [2022-12-13 21:39:56,150 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 28 transitions, 89 flow. Second operand has 4 states, 4 states have (on average 428.25) internal successors, (1713), 4 states have internal predecessors, (1713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:56,150 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:39:56,151 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 426 of 1016 [2022-12-13 21:39:56,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:39:56,377 INFO L130 PetriNetUnfolder]: 803/1180 cut-off events. [2022-12-13 21:39:56,377 INFO L131 PetriNetUnfolder]: For 249/249 co-relation queries the response was YES. [2022-12-13 21:39:56,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2786 conditions, 1180 events. 803/1180 cut-off events. For 249/249 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4550 event pairs, 71 based on Foata normal form. 0/1024 useless extension candidates. Maximal degree in co-relation 2770. Up to 534 conditions per place. [2022-12-13 21:39:56,380 INFO L137 encePairwiseOnDemand]: 1013/1016 looper letters, 51 selfloop transitions, 2 changer transitions 3/56 dead transitions. [2022-12-13 21:39:56,381 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 56 transitions, 274 flow [2022-12-13 21:39:56,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 21:39:56,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 21:39:56,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1756 transitions. [2022-12-13 21:39:56,383 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43208661417322836 [2022-12-13 21:39:56,383 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1756 transitions. [2022-12-13 21:39:56,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1756 transitions. [2022-12-13 21:39:56,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:39:56,384 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1756 transitions. [2022-12-13 21:39:56,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 439.0) internal successors, (1756), 4 states have internal predecessors, (1756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:56,387 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1016.0) internal successors, (5080), 5 states have internal predecessors, (5080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:56,388 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1016.0) internal successors, (5080), 5 states have internal predecessors, (5080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:56,388 INFO L175 Difference]: Start difference. First operand has 43 places, 28 transitions, 89 flow. Second operand 4 states and 1756 transitions. [2022-12-13 21:39:56,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 56 transitions, 274 flow [2022-12-13 21:39:56,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 56 transitions, 273 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 21:39:56,389 INFO L231 Difference]: Finished difference. Result has 44 places, 26 transitions, 86 flow [2022-12-13 21:39:56,389 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1016, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=86, PETRI_PLACES=44, PETRI_TRANSITIONS=26} [2022-12-13 21:39:56,389 INFO L288 CegarLoopForPetriNet]: 54 programPoint places, -10 predicate places. [2022-12-13 21:39:56,389 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 26 transitions, 86 flow [2022-12-13 21:39:56,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 428.25) internal successors, (1713), 4 states have internal predecessors, (1713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:56,390 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:39:56,390 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:39:56,394 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396f09d9-2c8b-43b8-98a8-7109a5d5f8f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 21:39:56,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396f09d9-2c8b-43b8-98a8-7109a5d5f8f8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-13 21:39:56,591 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-12-13 21:39:56,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:39:56,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1108203708, now seen corresponding path program 1 times [2022-12-13 21:39:56,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:39:56,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117006483] [2022-12-13 21:39:56,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:39:56,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:39:56,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:39:56,669 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:39:56,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:39:56,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117006483] [2022-12-13 21:39:56,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117006483] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:39:56,670 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:39:56,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 21:39:56,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360549277] [2022-12-13 21:39:56,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:39:56,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:39:56,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:39:56,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:39:56,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:39:56,680 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 426 out of 1016 [2022-12-13 21:39:56,681 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 26 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 429.3333333333333) internal successors, (1288), 3 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:56,681 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:39:56,681 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 426 of 1016 [2022-12-13 21:39:56,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:39:56,870 INFO L130 PetriNetUnfolder]: 803/1180 cut-off events. [2022-12-13 21:39:56,870 INFO L131 PetriNetUnfolder]: For 603/603 co-relation queries the response was YES. [2022-12-13 21:39:56,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2918 conditions, 1180 events. 803/1180 cut-off events. For 603/603 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 4273 event pairs, 458 based on Foata normal form. 0/1102 useless extension candidates. Maximal degree in co-relation 2902. Up to 930 conditions per place. [2022-12-13 21:39:56,874 INFO L137 encePairwiseOnDemand]: 1013/1016 looper letters, 38 selfloop transitions, 2 changer transitions 0/40 dead transitions. [2022-12-13 21:39:56,874 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 40 transitions, 212 flow [2022-12-13 21:39:56,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:39:56,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:39:56,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1313 transitions. [2022-12-13 21:39:56,876 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.43077427821522307 [2022-12-13 21:39:56,876 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1313 transitions. [2022-12-13 21:39:56,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1313 transitions. [2022-12-13 21:39:56,876 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:39:56,876 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1313 transitions. [2022-12-13 21:39:56,877 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 437.6666666666667) internal successors, (1313), 3 states have internal predecessors, (1313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:56,879 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1016.0) internal successors, (4064), 4 states have internal predecessors, (4064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:56,879 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1016.0) internal successors, (4064), 4 states have internal predecessors, (4064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:56,879 INFO L175 Difference]: Start difference. First operand has 44 places, 26 transitions, 86 flow. Second operand 3 states and 1313 transitions. [2022-12-13 21:39:56,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 40 transitions, 212 flow [2022-12-13 21:39:56,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 40 transitions, 206 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 21:39:56,880 INFO L231 Difference]: Finished difference. Result has 44 places, 27 transitions, 95 flow [2022-12-13 21:39:56,880 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1016, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=95, PETRI_PLACES=44, PETRI_TRANSITIONS=27} [2022-12-13 21:39:56,880 INFO L288 CegarLoopForPetriNet]: 54 programPoint places, -10 predicate places. [2022-12-13 21:39:56,880 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 27 transitions, 95 flow [2022-12-13 21:39:56,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 429.3333333333333) internal successors, (1288), 3 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:56,880 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 21:39:56,881 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:39:56,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 21:39:56,881 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 50 more)] === [2022-12-13 21:39:56,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 21:39:56,881 INFO L85 PathProgramCache]: Analyzing trace with hash -5421579, now seen corresponding path program 1 times [2022-12-13 21:39:56,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 21:39:56,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40651692] [2022-12-13 21:39:56,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 21:39:56,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 21:39:56,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 21:39:56,907 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 21:39:56,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 21:39:56,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40651692] [2022-12-13 21:39:56,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40651692] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 21:39:56,907 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 21:39:56,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 21:39:56,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249499876] [2022-12-13 21:39:56,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 21:39:56,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 21:39:56,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 21:39:56,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 21:39:56,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 21:39:56,916 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 426 out of 1016 [2022-12-13 21:39:56,917 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 27 transitions, 95 flow. Second operand has 3 states, 3 states have (on average 429.6666666666667) internal successors, (1289), 3 states have internal predecessors, (1289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:56,917 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 21:39:56,917 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 426 of 1016 [2022-12-13 21:39:56,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 21:39:57,078 INFO L130 PetriNetUnfolder]: 630/929 cut-off events. [2022-12-13 21:39:57,078 INFO L131 PetriNetUnfolder]: For 553/553 co-relation queries the response was YES. [2022-12-13 21:39:57,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2577 conditions, 929 events. 630/929 cut-off events. For 553/553 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 3064 event pairs, 458 based on Foata normal form. 0/929 useless extension candidates. Maximal degree in co-relation 2560. Up to 929 conditions per place. [2022-12-13 21:39:57,080 INFO L137 encePairwiseOnDemand]: 1014/1016 looper letters, 0 selfloop transitions, 0 changer transitions 26/26 dead transitions. [2022-12-13 21:39:57,080 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 26 transitions, 143 flow [2022-12-13 21:39:57,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 21:39:57,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 21:39:57,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1300 transitions. [2022-12-13 21:39:57,082 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.42650918635170604 [2022-12-13 21:39:57,082 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1300 transitions. [2022-12-13 21:39:57,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1300 transitions. [2022-12-13 21:39:57,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 21:39:57,082 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1300 transitions. [2022-12-13 21:39:57,084 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 433.3333333333333) internal successors, (1300), 3 states have internal predecessors, (1300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:57,085 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1016.0) internal successors, (4064), 4 states have internal predecessors, (4064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:57,085 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1016.0) internal successors, (4064), 4 states have internal predecessors, (4064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:57,085 INFO L175 Difference]: Start difference. First operand has 44 places, 27 transitions, 95 flow. Second operand 3 states and 1300 transitions. [2022-12-13 21:39:57,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 26 transitions, 143 flow [2022-12-13 21:39:57,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 26 transitions, 139 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-13 21:39:57,086 INFO L231 Difference]: Finished difference. Result has 44 places, 0 transitions, 0 flow [2022-12-13 21:39:57,086 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1016, PETRI_DIFFERENCE_MINUEND_FLOW=87, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=44, PETRI_TRANSITIONS=0} [2022-12-13 21:39:57,087 INFO L288 CegarLoopForPetriNet]: 54 programPoint places, -10 predicate places. [2022-12-13 21:39:57,087 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 0 transitions, 0 flow [2022-12-13 21:39:57,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 429.6666666666667) internal successors, (1289), 3 states have internal predecessors, (1289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 21:39:57,089 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (52 of 53 remaining) [2022-12-13 21:39:57,089 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (51 of 53 remaining) [2022-12-13 21:39:57,089 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (50 of 53 remaining) [2022-12-13 21:39:57,089 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (49 of 53 remaining) [2022-12-13 21:39:57,089 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (48 of 53 remaining) [2022-12-13 21:39:57,089 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (47 of 53 remaining) [2022-12-13 21:39:57,089 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (46 of 53 remaining) [2022-12-13 21:39:57,089 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (45 of 53 remaining) [2022-12-13 21:39:57,089 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (44 of 53 remaining) [2022-12-13 21:39:57,090 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (43 of 53 remaining) [2022-12-13 21:39:57,090 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (42 of 53 remaining) [2022-12-13 21:39:57,090 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (41 of 53 remaining) [2022-12-13 21:39:57,090 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (40 of 53 remaining) [2022-12-13 21:39:57,090 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (39 of 53 remaining) [2022-12-13 21:39:57,090 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 53 remaining) [2022-12-13 21:39:57,090 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 53 remaining) [2022-12-13 21:39:57,090 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 53 remaining) [2022-12-13 21:39:57,090 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 53 remaining) [2022-12-13 21:39:57,090 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 53 remaining) [2022-12-13 21:39:57,090 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 53 remaining) [2022-12-13 21:39:57,090 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 53 remaining) [2022-12-13 21:39:57,090 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 53 remaining) [2022-12-13 21:39:57,090 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 53 remaining) [2022-12-13 21:39:57,090 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 53 remaining) [2022-12-13 21:39:57,090 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 53 remaining) [2022-12-13 21:39:57,091 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 53 remaining) [2022-12-13 21:39:57,091 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (26 of 53 remaining) [2022-12-13 21:39:57,091 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (25 of 53 remaining) [2022-12-13 21:39:57,091 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 53 remaining) [2022-12-13 21:39:57,091 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 53 remaining) [2022-12-13 21:39:57,091 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 53 remaining) [2022-12-13 21:39:57,091 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 53 remaining) [2022-12-13 21:39:57,091 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 53 remaining) [2022-12-13 21:39:57,091 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 53 remaining) [2022-12-13 21:39:57,091 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 53 remaining) [2022-12-13 21:39:57,091 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 53 remaining) [2022-12-13 21:39:57,091 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 53 remaining) [2022-12-13 21:39:57,091 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 53 remaining) [2022-12-13 21:39:57,091 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 53 remaining) [2022-12-13 21:39:57,091 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 53 remaining) [2022-12-13 21:39:57,091 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 53 remaining) [2022-12-13 21:39:57,091 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 53 remaining) [2022-12-13 21:39:57,092 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 53 remaining) [2022-12-13 21:39:57,092 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 53 remaining) [2022-12-13 21:39:57,092 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 53 remaining) [2022-12-13 21:39:57,092 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 53 remaining) [2022-12-13 21:39:57,092 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 53 remaining) [2022-12-13 21:39:57,092 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 53 remaining) [2022-12-13 21:39:57,092 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 53 remaining) [2022-12-13 21:39:57,092 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 53 remaining) [2022-12-13 21:39:57,092 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 53 remaining) [2022-12-13 21:39:57,092 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 53 remaining) [2022-12-13 21:39:57,092 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 53 remaining) [2022-12-13 21:39:57,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-13 21:39:57,092 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 21:39:57,096 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 21:39:57,096 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 21:39:57,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 09:39:57 BasicIcfg [2022-12-13 21:39:57,098 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 21:39:57,099 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 21:39:57,099 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 21:39:57,099 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 21:39:57,099 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 09:39:17" (3/4) ... [2022-12-13 21:39:57,101 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 21:39:57,105 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-12-13 21:39:57,105 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-12-13 21:39:57,105 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-12-13 21:39:57,108 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 23 nodes and edges [2022-12-13 21:39:57,108 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-12-13 21:39:57,108 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-12-13 21:39:57,108 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-13 21:39:57,133 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396f09d9-2c8b-43b8-98a8-7109a5d5f8f8/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 21:39:57,133 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 21:39:57,134 INFO L158 Benchmark]: Toolchain (without parser) took 40196.59ms. Allocated memory was 144.7MB in the beginning and 2.5GB in the end (delta: 2.3GB). Free memory was 109.6MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. [2022-12-13 21:39:57,134 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 144.7MB. Free memory is still 114.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 21:39:57,134 INFO L158 Benchmark]: CACSL2BoogieTranslator took 210.12ms. Allocated memory is still 144.7MB. Free memory was 109.6MB in the beginning and 96.7MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-13 21:39:57,134 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.71ms. Allocated memory is still 144.7MB. Free memory was 96.7MB in the beginning and 93.5MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-13 21:39:57,134 INFO L158 Benchmark]: Boogie Preprocessor took 25.92ms. Allocated memory is still 144.7MB. Free memory was 93.5MB in the beginning and 91.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 21:39:57,135 INFO L158 Benchmark]: RCFGBuilder took 599.85ms. Allocated memory is still 144.7MB. Free memory was 91.4MB in the beginning and 62.0MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2022-12-13 21:39:57,135 INFO L158 Benchmark]: TraceAbstraction took 39286.56ms. Allocated memory was 144.7MB in the beginning and 2.5GB in the end (delta: 2.3GB). Free memory was 61.5MB in the beginning and 1.3GB in the end (delta: -1.3GB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. [2022-12-13 21:39:57,135 INFO L158 Benchmark]: Witness Printer took 34.75ms. Allocated memory is still 2.5GB. Free memory was 1.3GB in the beginning and 1.3GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-13 21:39:57,136 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 144.7MB. Free memory is still 114.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 210.12ms. Allocated memory is still 144.7MB. Free memory was 109.6MB in the beginning and 96.7MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.71ms. Allocated memory is still 144.7MB. Free memory was 96.7MB in the beginning and 93.5MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.92ms. Allocated memory is still 144.7MB. Free memory was 93.5MB in the beginning and 91.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 599.85ms. Allocated memory is still 144.7MB. Free memory was 91.4MB in the beginning and 62.0MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * TraceAbstraction took 39286.56ms. Allocated memory was 144.7MB in the beginning and 2.5GB in the end (delta: 2.3GB). Free memory was 61.5MB in the beginning and 1.3GB in the end (delta: -1.3GB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. * Witness Printer took 34.75ms. Allocated memory is still 2.5GB. Free memory was 1.3GB in the beginning and 1.3GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 17.8s, 411 PlacesBefore, 54 PlacesAfterwards, 432 TransitionsBefore, 48 TransitionsAfterwards, 62208 CoEnabledTransitionPairs, 8 FixpointIterations, 121 TrivialSequentialCompositions, 332 ConcurrentSequentialCompositions, 9 TrivialYvCompositions, 71 ConcurrentYvCompositions, 27 ChoiceCompositions, 560 TotalNumberOfCompositions, 57673 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 57210, independent: 57187, independent conditional: 0, independent unconditional: 57187, dependent: 23, dependent conditional: 0, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 36544, independent: 36529, independent conditional: 0, independent unconditional: 36529, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 57210, independent: 20658, independent conditional: 0, independent unconditional: 20658, dependent: 8, dependent conditional: 0, dependent unconditional: 8, unknown: 36544, unknown conditional: 0, unknown unconditional: 36544] , Statistics on independence cache: Total cache size (in pairs): 160, Positive cache size: 158, Positive conditional cache size: 0, Positive unconditional cache size: 158, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 159]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 159]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 160]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 160]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 161]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 161]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 81]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 159]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 81]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 159]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 160]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 160]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 161]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 161]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 103]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 159]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 103]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 159]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 160]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 160]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 161]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 161]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 152]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 152]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 692 locations, 53 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 39.1s, OverallIterations: 18, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 17.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 18.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1200 SdHoareTripleChecker+Valid, 1.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 892 mSDsluCounter, 70 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 67 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1519 IncrementalHoareTripleChecker+Invalid, 1586 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 67 mSolverCounterUnsat, 70 mSDtfsCounter, 1519 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 102 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=141occurred in iteration=4, InterpolantAutomatonStates: 63, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 203 NumberOfCodeBlocks, 199 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 186 ConstructedInterpolants, 0 QuantifiedInterpolants, 442 SizeOfPredicates, 3 NumberOfNonLiveVariables, 1339 ConjunctsInSsa, 29 ConjunctsInUnsatCore, 27 InterpolantComputations, 16 PerfectInterpolantSequences, 119/130 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 26 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-13 21:39:57,151 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_396f09d9-2c8b-43b8-98a8-7109a5d5f8f8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE