./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b813f8c-22b1-4c13-8a9d-26d51f4cf269/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b813f8c-22b1-4c13-8a9d-26d51f4cf269/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b813f8c-22b1-4c13-8a9d-26d51f4cf269/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b813f8c-22b1-4c13-8a9d-26d51f4cf269/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b813f8c-22b1-4c13-8a9d-26d51f4cf269/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b813f8c-22b1-4c13-8a9d-26d51f4cf269/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 908fbcc4d3742ed9abcae99df082df11caf0d6bd4e74389f515555cf6e492354 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 19:56:26,401 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:56:26,404 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:56:26,444 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:56:26,445 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:56:26,450 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:56:26,452 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:56:26,453 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:56:26,455 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:56:26,456 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:56:26,457 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:56:26,458 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:56:26,458 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:56:26,459 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:56:26,460 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:56:26,461 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:56:26,462 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:56:26,463 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:56:26,464 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:56:26,466 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:56:26,470 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:56:26,473 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:56:26,474 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:56:26,475 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:56:26,478 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:56:26,479 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:56:26,479 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:56:26,480 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:56:26,481 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:56:26,482 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:56:26,482 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:56:26,483 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:56:26,484 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:56:26,484 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:56:26,485 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:56:26,486 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:56:26,497 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:56:26,499 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:56:26,499 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:56:26,500 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:56:26,501 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:56:26,502 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b813f8c-22b1-4c13-8a9d-26d51f4cf269/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 19:56:26,533 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:56:26,536 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:56:26,539 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:56:26,539 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:56:26,540 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:56:26,541 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:56:26,541 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:56:26,542 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:56:26,542 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:56:26,542 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:56:26,543 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 19:56:26,543 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 19:56:26,544 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:56:26,544 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 19:56:26,544 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:56:26,544 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 19:56:26,545 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:56:26,545 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 19:56:26,545 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 19:56:26,545 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 19:56:26,545 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 19:56:26,546 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:56:26,546 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 19:56:26,546 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:56:26,547 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:56:26,547 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:56:26,548 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:56:26,549 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:56:26,549 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:56:26,549 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 19:56:26,549 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:56:26,550 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:56:26,550 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 19:56:26,550 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 19:56:26,550 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 19:56:26,551 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b813f8c-22b1-4c13-8a9d-26d51f4cf269/bin/uautomizer-TMbwUNV5ro/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b813f8c-22b1-4c13-8a9d-26d51f4cf269/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 908fbcc4d3742ed9abcae99df082df11caf0d6bd4e74389f515555cf6e492354 [2022-11-18 19:56:26,816 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:56:26,848 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:56:26,850 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:56:26,851 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:56:26,852 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:56:26,853 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b813f8c-22b1-4c13-8a9d-26d51f4cf269/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c [2022-11-18 19:56:26,928 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b813f8c-22b1-4c13-8a9d-26d51f4cf269/bin/uautomizer-TMbwUNV5ro/data/d69618b58/425e55032d6d4b009c18b823196df12b/FLAG5cfb32148 [2022-11-18 19:56:27,482 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:56:27,483 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b813f8c-22b1-4c13-8a9d-26d51f4cf269/sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c [2022-11-18 19:56:27,490 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b813f8c-22b1-4c13-8a9d-26d51f4cf269/bin/uautomizer-TMbwUNV5ro/data/d69618b58/425e55032d6d4b009c18b823196df12b/FLAG5cfb32148 [2022-11-18 19:56:27,821 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b813f8c-22b1-4c13-8a9d-26d51f4cf269/bin/uautomizer-TMbwUNV5ro/data/d69618b58/425e55032d6d4b009c18b823196df12b [2022-11-18 19:56:27,824 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:56:27,825 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:56:27,830 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:56:27,831 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:56:27,834 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:56:27,835 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:56:27" (1/1) ... [2022-11-18 19:56:27,836 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24da57c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:56:27, skipping insertion in model container [2022-11-18 19:56:27,836 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:56:27" (1/1) ... [2022-11-18 19:56:27,844 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:56:27,872 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:56:28,122 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b813f8c-22b1-4c13-8a9d-26d51f4cf269/sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c[3856,3869] [2022-11-18 19:56:28,130 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:56:28,138 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:56:28,164 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b813f8c-22b1-4c13-8a9d-26d51f4cf269/sv-benchmarks/c/weaver/chl-name-comparator-symm.wvr.c[3856,3869] [2022-11-18 19:56:28,168 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:56:28,181 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:56:28,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:56:28 WrapperNode [2022-11-18 19:56:28,182 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:56:28,182 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:56:28,183 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:56:28,183 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:56:28,190 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:56:28" (1/1) ... [2022-11-18 19:56:28,198 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:56:28" (1/1) ... [2022-11-18 19:56:28,247 INFO L138 Inliner]: procedures = 25, calls = 34, calls flagged for inlining = 14, calls inlined = 16, statements flattened = 250 [2022-11-18 19:56:28,256 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:56:28,257 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:56:28,258 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:56:28,258 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:56:28,268 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:56:28" (1/1) ... [2022-11-18 19:56:28,268 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:56:28" (1/1) ... [2022-11-18 19:56:28,284 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:56:28" (1/1) ... [2022-11-18 19:56:28,284 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:56:28" (1/1) ... [2022-11-18 19:56:28,292 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:56:28" (1/1) ... [2022-11-18 19:56:28,315 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:56:28" (1/1) ... [2022-11-18 19:56:28,316 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:56:28" (1/1) ... [2022-11-18 19:56:28,318 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:56:28" (1/1) ... [2022-11-18 19:56:28,321 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:56:28,321 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:56:28,322 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:56:28,322 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:56:28,330 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:56:28" (1/1) ... [2022-11-18 19:56:28,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:56:28,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b813f8c-22b1-4c13-8a9d-26d51f4cf269/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:56:28,368 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b813f8c-22b1-4c13-8a9d-26d51f4cf269/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:56:28,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b813f8c-22b1-4c13-8a9d-26d51f4cf269/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:56:28,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:56:28,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 19:56:28,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 19:56:28,416 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 19:56:28,416 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 19:56:28,418 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 19:56:28,418 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 19:56:28,418 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 19:56:28,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 19:56:28,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 19:56:28,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:56:28,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:56:28,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 19:56:28,421 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 19:56:28,528 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:56:28,531 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:56:29,210 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:56:29,235 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:56:29,235 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-18 19:56:29,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:56:29 BoogieIcfgContainer [2022-11-18 19:56:29,239 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:56:29,241 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:56:29,243 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:56:29,247 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:56:29,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:56:27" (1/3) ... [2022-11-18 19:56:29,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67d2e1ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:56:29, skipping insertion in model container [2022-11-18 19:56:29,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:56:28" (2/3) ... [2022-11-18 19:56:29,249 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67d2e1ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:56:29, skipping insertion in model container [2022-11-18 19:56:29,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:56:29" (3/3) ... [2022-11-18 19:56:29,251 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-symm.wvr.c [2022-11-18 19:56:29,259 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 19:56:29,270 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:56:29,270 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2022-11-18 19:56:29,271 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 19:56:29,468 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-18 19:56:29,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 316 places, 332 transitions, 680 flow [2022-11-18 19:56:29,736 INFO L130 PetriNetUnfolder]: 23/330 cut-off events. [2022-11-18 19:56:29,736 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-18 19:56:29,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 339 conditions, 330 events. 23/330 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 724 event pairs, 0 based on Foata normal form. 0/287 useless extension candidates. Maximal degree in co-relation 206. Up to 2 conditions per place. [2022-11-18 19:56:29,748 INFO L82 GeneralOperation]: Start removeDead. Operand has 316 places, 332 transitions, 680 flow [2022-11-18 19:56:29,761 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 297 places, 312 transitions, 636 flow [2022-11-18 19:56:29,778 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:56:29,787 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;@de16ec9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:56:29,787 INFO L358 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2022-11-18 19:56:29,806 INFO L130 PetriNetUnfolder]: 3/92 cut-off events. [2022-11-18 19:56:29,806 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 19:56:29,807 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:56:29,808 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:56:29,808 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-18 19:56:29,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:56:29,814 INFO L85 PathProgramCache]: Analyzing trace with hash 322735784, now seen corresponding path program 1 times [2022-11-18 19:56:29,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:56:29,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84662447] [2022-11-18 19:56:29,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:56:29,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:56:29,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:30,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:56:30,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:56:30,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84662447] [2022-11-18 19:56:30,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84662447] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:56:30,256 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:56:30,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:56:30,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228551017] [2022-11-18 19:56:30,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:56:30,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:56:30,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:56:30,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:56:30,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:56:30,327 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 299 out of 332 [2022-11-18 19:56:30,335 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 312 transitions, 636 flow. Second operand has 4 states, 4 states have (on average 300.5) internal successors, (1202), 4 states have internal predecessors, (1202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:30,336 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:56:30,336 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 299 of 332 [2022-11-18 19:56:30,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:56:30,618 INFO L130 PetriNetUnfolder]: 17/513 cut-off events. [2022-11-18 19:56:30,618 INFO L131 PetriNetUnfolder]: For 18/20 co-relation queries the response was YES. [2022-11-18 19:56:30,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 557 conditions, 513 events. 17/513 cut-off events. For 18/20 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2133 event pairs, 0 based on Foata normal form. 34/477 useless extension candidates. Maximal degree in co-relation 337. Up to 17 conditions per place. [2022-11-18 19:56:30,628 INFO L137 encePairwiseOnDemand]: 311/332 looper letters, 22 selfloop transitions, 4 changer transitions 6/309 dead transitions. [2022-11-18 19:56:30,628 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 309 transitions, 698 flow [2022-11-18 19:56:30,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:56:30,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:56:30,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1553 transitions. [2022-11-18 19:56:30,648 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9355421686746987 [2022-11-18 19:56:30,649 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1553 transitions. [2022-11-18 19:56:30,650 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1553 transitions. [2022-11-18 19:56:30,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:56:30,655 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1553 transitions. [2022-11-18 19:56:30,661 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 310.6) internal successors, (1553), 5 states have internal predecessors, (1553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:30,672 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:30,673 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:30,675 INFO L175 Difference]: Start difference. First operand has 297 places, 312 transitions, 636 flow. Second operand 5 states and 1553 transitions. [2022-11-18 19:56:30,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 309 transitions, 698 flow [2022-11-18 19:56:30,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 309 transitions, 682 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 19:56:30,686 INFO L231 Difference]: Finished difference. Result has 298 places, 295 transitions, 617 flow [2022-11-18 19:56:30,689 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=598, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=617, PETRI_PLACES=298, PETRI_TRANSITIONS=295} [2022-11-18 19:56:30,692 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 1 predicate places. [2022-11-18 19:56:30,693 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 295 transitions, 617 flow [2022-11-18 19:56:30,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 300.5) internal successors, (1202), 4 states have internal predecessors, (1202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:30,694 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:56:30,694 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:56:30,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 19:56:30,695 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-18 19:56:30,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:56:30,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1266272972, now seen corresponding path program 1 times [2022-11-18 19:56:30,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:56:30,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396763477] [2022-11-18 19:56:30,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:56:30,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:56:30,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:30,953 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:56:30,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:56:30,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396763477] [2022-11-18 19:56:30,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396763477] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:56:30,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549817266] [2022-11-18 19:56:30,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:56:30,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:56:30,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b813f8c-22b1-4c13-8a9d-26d51f4cf269/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:56:30,962 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b813f8c-22b1-4c13-8a9d-26d51f4cf269/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:56:30,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b813f8c-22b1-4c13-8a9d-26d51f4cf269/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 19:56:31,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:31,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:56:31,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:56:31,237 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:56:31,237 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:56:31,320 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:56:31,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1549817266] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:56:31,320 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:56:31,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-18 19:56:31,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661840306] [2022-11-18 19:56:31,322 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:56:31,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 19:56:31,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:56:31,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 19:56:31,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-18 19:56:31,334 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 299 out of 332 [2022-11-18 19:56:31,338 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 295 transitions, 617 flow. Second operand has 12 states, 12 states have (on average 301.6666666666667) internal successors, (3620), 12 states have internal predecessors, (3620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:31,339 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:56:31,339 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 299 of 332 [2022-11-18 19:56:31,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:56:31,874 INFO L130 PetriNetUnfolder]: 41/1146 cut-off events. [2022-11-18 19:56:31,874 INFO L131 PetriNetUnfolder]: For 16/21 co-relation queries the response was YES. [2022-11-18 19:56:31,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1246 conditions, 1146 events. 41/1146 cut-off events. For 16/21 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 6979 event pairs, 0 based on Foata normal form. 3/984 useless extension candidates. Maximal degree in co-relation 928. Up to 11 conditions per place. [2022-11-18 19:56:31,892 INFO L137 encePairwiseOnDemand]: 325/332 looper letters, 43 selfloop transitions, 18 changer transitions 0/338 dead transitions. [2022-11-18 19:56:31,893 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 338 transitions, 859 flow [2022-11-18 19:56:31,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 19:56:31,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-18 19:56:31,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 5446 transitions. [2022-11-18 19:56:31,904 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9113119143239625 [2022-11-18 19:56:31,904 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 5446 transitions. [2022-11-18 19:56:31,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 5446 transitions. [2022-11-18 19:56:31,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:56:31,907 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 5446 transitions. [2022-11-18 19:56:31,920 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 302.55555555555554) internal successors, (5446), 18 states have internal predecessors, (5446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:31,932 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 332.0) internal successors, (6308), 19 states have internal predecessors, (6308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:31,936 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 332.0) internal successors, (6308), 19 states have internal predecessors, (6308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:31,936 INFO L175 Difference]: Start difference. First operand has 298 places, 295 transitions, 617 flow. Second operand 18 states and 5446 transitions. [2022-11-18 19:56:31,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 338 transitions, 859 flow [2022-11-18 19:56:31,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 338 transitions, 857 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:56:31,944 INFO L231 Difference]: Finished difference. Result has 313 places, 307 transitions, 721 flow [2022-11-18 19:56:31,945 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=615, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=721, PETRI_PLACES=313, PETRI_TRANSITIONS=307} [2022-11-18 19:56:31,945 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 16 predicate places. [2022-11-18 19:56:31,946 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 307 transitions, 721 flow [2022-11-18 19:56:31,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 301.6666666666667) internal successors, (3620), 12 states have internal predecessors, (3620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:31,948 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:56:31,949 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:56:31,960 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b813f8c-22b1-4c13-8a9d-26d51f4cf269/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 19:56:32,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b813f8c-22b1-4c13-8a9d-26d51f4cf269/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:56:32,161 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-18 19:56:32,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:56:32,161 INFO L85 PathProgramCache]: Analyzing trace with hash 599757052, now seen corresponding path program 1 times [2022-11-18 19:56:32,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:56:32,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512861637] [2022-11-18 19:56:32,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:56:32,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:56:32,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:32,350 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:56:32,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:56:32,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512861637] [2022-11-18 19:56:32,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512861637] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:56:32,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [33952847] [2022-11-18 19:56:32,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:56:32,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:56:32,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b813f8c-22b1-4c13-8a9d-26d51f4cf269/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:56:32,353 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b813f8c-22b1-4c13-8a9d-26d51f4cf269/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:56:32,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b813f8c-22b1-4c13-8a9d-26d51f4cf269/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 19:56:32,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:32,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:56:32,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:56:32,540 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:56:32,541 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:56:32,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [33952847] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:56:32,541 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:56:32,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 19:56:32,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846996330] [2022-11-18 19:56:32,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:56:32,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:56:32,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:56:32,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:56:32,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:56:32,550 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 299 out of 332 [2022-11-18 19:56:32,554 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 307 transitions, 721 flow. Second operand has 6 states, 6 states have (on average 301.3333333333333) internal successors, (1808), 6 states have internal predecessors, (1808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:32,554 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:56:32,554 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 299 of 332 [2022-11-18 19:56:32,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:56:32,871 INFO L130 PetriNetUnfolder]: 41/1142 cut-off events. [2022-11-18 19:56:32,871 INFO L131 PetriNetUnfolder]: For 52/57 co-relation queries the response was YES. [2022-11-18 19:56:32,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1264 conditions, 1142 events. 41/1142 cut-off events. For 52/57 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 6954 event pairs, 0 based on Foata normal form. 4/981 useless extension candidates. Maximal degree in co-relation 1001. Up to 28 conditions per place. [2022-11-18 19:56:32,887 INFO L137 encePairwiseOnDemand]: 327/332 looper letters, 23 selfloop transitions, 11 changer transitions 0/311 dead transitions. [2022-11-18 19:56:32,887 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 311 transitions, 783 flow [2022-11-18 19:56:32,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:56:32,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 19:56:32,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2119 transitions. [2022-11-18 19:56:32,892 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9117900172117039 [2022-11-18 19:56:32,892 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2119 transitions. [2022-11-18 19:56:32,892 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2119 transitions. [2022-11-18 19:56:32,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:56:32,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2119 transitions. [2022-11-18 19:56:32,898 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 302.7142857142857) internal successors, (2119), 7 states have internal predecessors, (2119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:32,903 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 332.0) internal successors, (2656), 8 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:32,904 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 332.0) internal successors, (2656), 8 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:32,904 INFO L175 Difference]: Start difference. First operand has 313 places, 307 transitions, 721 flow. Second operand 7 states and 2119 transitions. [2022-11-18 19:56:32,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 311 transitions, 783 flow [2022-11-18 19:56:32,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 311 transitions, 751 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-11-18 19:56:32,914 INFO L231 Difference]: Finished difference. Result has 309 places, 303 transitions, 684 flow [2022-11-18 19:56:32,915 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=662, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=684, PETRI_PLACES=309, PETRI_TRANSITIONS=303} [2022-11-18 19:56:32,918 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 12 predicate places. [2022-11-18 19:56:32,918 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 303 transitions, 684 flow [2022-11-18 19:56:32,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 301.3333333333333) internal successors, (1808), 6 states have internal predecessors, (1808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:32,919 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:56:32,919 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:56:32,930 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b813f8c-22b1-4c13-8a9d-26d51f4cf269/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 19:56:33,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b813f8c-22b1-4c13-8a9d-26d51f4cf269/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-11-18 19:56:33,126 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-18 19:56:33,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:56:33,126 INFO L85 PathProgramCache]: Analyzing trace with hash 889681398, now seen corresponding path program 1 times [2022-11-18 19:56:33,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:56:33,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323382213] [2022-11-18 19:56:33,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:56:33,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:56:33,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:33,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:56:33,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:56:33,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323382213] [2022-11-18 19:56:33,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323382213] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:56:33,277 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:56:33,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:56:33,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100575300] [2022-11-18 19:56:33,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:56:33,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:56:33,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:56:33,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:56:33,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:56:33,280 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 298 out of 332 [2022-11-18 19:56:33,282 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 303 transitions, 684 flow. Second operand has 4 states, 4 states have (on average 300.0) internal successors, (1200), 4 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:33,282 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:56:33,282 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 298 of 332 [2022-11-18 19:56:33,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:56:34,137 INFO L130 PetriNetUnfolder]: 246/4032 cut-off events. [2022-11-18 19:56:34,137 INFO L131 PetriNetUnfolder]: For 32/37 co-relation queries the response was YES. [2022-11-18 19:56:34,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4483 conditions, 4032 events. 246/4032 cut-off events. For 32/37 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 39545 event pairs, 15 based on Foata normal form. 0/3382 useless extension candidates. Maximal degree in co-relation 3583. Up to 177 conditions per place. [2022-11-18 19:56:34,183 INFO L137 encePairwiseOnDemand]: 324/332 looper letters, 22 selfloop transitions, 6 changer transitions 0/315 dead transitions. [2022-11-18 19:56:34,183 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 315 transitions, 768 flow [2022-11-18 19:56:34,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:56:34,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:56:34,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1520 transitions. [2022-11-18 19:56:34,187 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9156626506024096 [2022-11-18 19:56:34,188 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1520 transitions. [2022-11-18 19:56:34,188 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1520 transitions. [2022-11-18 19:56:34,189 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:56:34,189 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1520 transitions. [2022-11-18 19:56:34,192 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 304.0) internal successors, (1520), 5 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:34,239 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:34,240 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:34,240 INFO L175 Difference]: Start difference. First operand has 309 places, 303 transitions, 684 flow. Second operand 5 states and 1520 transitions. [2022-11-18 19:56:34,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 315 transitions, 768 flow [2022-11-18 19:56:34,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 315 transitions, 754 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 19:56:34,246 INFO L231 Difference]: Finished difference. Result has 311 places, 306 transitions, 706 flow [2022-11-18 19:56:34,248 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=670, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=706, PETRI_PLACES=311, PETRI_TRANSITIONS=306} [2022-11-18 19:56:34,249 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 14 predicate places. [2022-11-18 19:56:34,250 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 306 transitions, 706 flow [2022-11-18 19:56:34,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 300.0) internal successors, (1200), 4 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:34,250 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:56:34,251 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:56:34,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 19:56:34,251 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-18 19:56:34,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:56:34,252 INFO L85 PathProgramCache]: Analyzing trace with hash 127108922, now seen corresponding path program 1 times [2022-11-18 19:56:34,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:56:34,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925853] [2022-11-18 19:56:34,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:56:34,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:56:34,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:34,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:56:34,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:56:34,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925853] [2022-11-18 19:56:34,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925853] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:56:34,377 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:56:34,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:56:34,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663103858] [2022-11-18 19:56:34,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:56:34,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:56:34,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:56:34,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:56:34,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:56:34,380 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 299 out of 332 [2022-11-18 19:56:34,382 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 306 transitions, 706 flow. Second operand has 5 states, 5 states have (on average 300.8) internal successors, (1504), 5 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:34,382 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:56:34,382 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 299 of 332 [2022-11-18 19:56:34,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:56:34,740 INFO L130 PetriNetUnfolder]: 45/1290 cut-off events. [2022-11-18 19:56:34,741 INFO L131 PetriNetUnfolder]: For 57/65 co-relation queries the response was YES. [2022-11-18 19:56:34,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1441 conditions, 1290 events. 45/1290 cut-off events. For 57/65 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 8306 event pairs, 0 based on Foata normal form. 0/1110 useless extension candidates. Maximal degree in co-relation 1320. Up to 41 conditions per place. [2022-11-18 19:56:34,768 INFO L137 encePairwiseOnDemand]: 327/332 looper letters, 21 selfloop transitions, 4 changer transitions 0/308 dead transitions. [2022-11-18 19:56:34,768 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 308 transitions, 760 flow [2022-11-18 19:56:34,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:56:34,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:56:34,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1515 transitions. [2022-11-18 19:56:34,774 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9126506024096386 [2022-11-18 19:56:34,774 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1515 transitions. [2022-11-18 19:56:34,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1515 transitions. [2022-11-18 19:56:34,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:56:34,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1515 transitions. [2022-11-18 19:56:34,778 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 303.0) internal successors, (1515), 5 states have internal predecessors, (1515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:34,781 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:34,782 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:34,782 INFO L175 Difference]: Start difference. First operand has 311 places, 306 transitions, 706 flow. Second operand 5 states and 1515 transitions. [2022-11-18 19:56:34,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 308 transitions, 760 flow [2022-11-18 19:56:34,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 308 transitions, 756 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:56:34,788 INFO L231 Difference]: Finished difference. Result has 315 places, 306 transitions, 714 flow [2022-11-18 19:56:34,789 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=702, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=714, PETRI_PLACES=315, PETRI_TRANSITIONS=306} [2022-11-18 19:56:34,789 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 18 predicate places. [2022-11-18 19:56:34,789 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 306 transitions, 714 flow [2022-11-18 19:56:34,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 300.8) internal successors, (1504), 5 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:34,790 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:56:34,791 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:56:34,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 19:56:34,791 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-18 19:56:34,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:56:34,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1290018398, now seen corresponding path program 1 times [2022-11-18 19:56:34,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:56:34,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109637392] [2022-11-18 19:56:34,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:56:34,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:56:34,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:34,932 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:56:34,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:56:34,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109637392] [2022-11-18 19:56:34,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109637392] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:56:34,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420373428] [2022-11-18 19:56:34,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:56:34,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:56:34,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b813f8c-22b1-4c13-8a9d-26d51f4cf269/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:56:34,934 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b813f8c-22b1-4c13-8a9d-26d51f4cf269/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:56:34,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b813f8c-22b1-4c13-8a9d-26d51f4cf269/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 19:56:35,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:35,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 19:56:35,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:56:35,224 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:56:35,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:56:35,315 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:56:35,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420373428] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:56:35,315 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:56:35,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2022-11-18 19:56:35,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817049553] [2022-11-18 19:56:35,316 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:56:35,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 19:56:35,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:56:35,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 19:56:35,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-11-18 19:56:35,323 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 332 [2022-11-18 19:56:35,343 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 306 transitions, 714 flow. Second operand has 14 states, 14 states have (on average 296.85714285714283) internal successors, (4156), 14 states have internal predecessors, (4156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:35,343 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:56:35,344 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 332 [2022-11-18 19:56:35,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:56:35,656 INFO L130 PetriNetUnfolder]: 23/706 cut-off events. [2022-11-18 19:56:35,657 INFO L131 PetriNetUnfolder]: For 46/50 co-relation queries the response was YES. [2022-11-18 19:56:35,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 839 conditions, 706 events. 23/706 cut-off events. For 46/50 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3194 event pairs, 0 based on Foata normal form. 2/620 useless extension candidates. Maximal degree in co-relation 716. Up to 19 conditions per place. [2022-11-18 19:56:35,670 INFO L137 encePairwiseOnDemand]: 324/332 looper letters, 27 selfloop transitions, 13 changer transitions 0/315 dead transitions. [2022-11-18 19:56:35,670 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 315 transitions, 816 flow [2022-11-18 19:56:35,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 19:56:35,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 19:56:35,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3270 transitions. [2022-11-18 19:56:35,682 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8953997809419496 [2022-11-18 19:56:35,682 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3270 transitions. [2022-11-18 19:56:35,683 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3270 transitions. [2022-11-18 19:56:35,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:56:35,685 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3270 transitions. [2022-11-18 19:56:35,691 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 297.27272727272725) internal successors, (3270), 11 states have internal predecessors, (3270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:35,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 332.0) internal successors, (3984), 12 states have internal predecessors, (3984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:35,700 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 332.0) internal successors, (3984), 12 states have internal predecessors, (3984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:35,700 INFO L175 Difference]: Start difference. First operand has 315 places, 306 transitions, 714 flow. Second operand 11 states and 3270 transitions. [2022-11-18 19:56:35,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 315 transitions, 816 flow [2022-11-18 19:56:35,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 315 transitions, 808 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 19:56:35,713 INFO L231 Difference]: Finished difference. Result has 324 places, 307 transitions, 753 flow [2022-11-18 19:56:35,714 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=706, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=753, PETRI_PLACES=324, PETRI_TRANSITIONS=307} [2022-11-18 19:56:35,717 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 27 predicate places. [2022-11-18 19:56:35,717 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 307 transitions, 753 flow [2022-11-18 19:56:35,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 296.85714285714283) internal successors, (4156), 14 states have internal predecessors, (4156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:35,719 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:56:35,719 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:56:35,729 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b813f8c-22b1-4c13-8a9d-26d51f4cf269/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-18 19:56:35,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b813f8c-22b1-4c13-8a9d-26d51f4cf269/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:56:35,925 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-18 19:56:35,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:56:35,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1532116904, now seen corresponding path program 2 times [2022-11-18 19:56:35,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:56:35,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439276004] [2022-11-18 19:56:35,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:56:35,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:56:35,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:36,230 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 56 proven. 17 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 19:56:36,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:56:36,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439276004] [2022-11-18 19:56:36,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439276004] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:56:36,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062013436] [2022-11-18 19:56:36,231 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:56:36,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:56:36,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b813f8c-22b1-4c13-8a9d-26d51f4cf269/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:56:36,233 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b813f8c-22b1-4c13-8a9d-26d51f4cf269/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:56:36,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b813f8c-22b1-4c13-8a9d-26d51f4cf269/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 19:56:36,346 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 19:56:36,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:56:36,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:56:36,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:56:36,464 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-18 19:56:36,464 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:56:36,624 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-18 19:56:36,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062013436] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:56:36,625 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:56:36,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 17 [2022-11-18 19:56:36,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608790816] [2022-11-18 19:56:36,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:56:36,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-18 19:56:36,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:56:36,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-18 19:56:36,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2022-11-18 19:56:36,633 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 332 [2022-11-18 19:56:36,639 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 307 transitions, 753 flow. Second operand has 17 states, 17 states have (on average 297.94117647058823) internal successors, (5065), 17 states have internal predecessors, (5065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:36,640 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:56:36,640 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 332 [2022-11-18 19:56:36,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:56:37,055 INFO L130 PetriNetUnfolder]: 11/396 cut-off events. [2022-11-18 19:56:37,056 INFO L131 PetriNetUnfolder]: For 43/45 co-relation queries the response was YES. [2022-11-18 19:56:37,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 499 conditions, 396 events. 11/396 cut-off events. For 43/45 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1040 event pairs, 0 based on Foata normal form. 1/353 useless extension candidates. Maximal degree in co-relation 484. Up to 6 conditions per place. [2022-11-18 19:56:37,062 INFO L137 encePairwiseOnDemand]: 325/332 looper letters, 19 selfloop transitions, 13 changer transitions 0/307 dead transitions. [2022-11-18 19:56:37,062 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 307 transitions, 786 flow [2022-11-18 19:56:37,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 19:56:37,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-18 19:56:37,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 4443 transitions. [2022-11-18 19:56:37,073 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8921686746987951 [2022-11-18 19:56:37,073 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 4443 transitions. [2022-11-18 19:56:37,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 4443 transitions. [2022-11-18 19:56:37,076 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:56:37,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 4443 transitions. [2022-11-18 19:56:37,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 296.2) internal successors, (4443), 15 states have internal predecessors, (4443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:37,096 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 332.0) internal successors, (5312), 16 states have internal predecessors, (5312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:37,098 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 332.0) internal successors, (5312), 16 states have internal predecessors, (5312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:37,099 INFO L175 Difference]: Start difference. First operand has 324 places, 307 transitions, 753 flow. Second operand 15 states and 4443 transitions. [2022-11-18 19:56:37,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 307 transitions, 786 flow [2022-11-18 19:56:37,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 307 transitions, 741 flow, removed 3 selfloop flow, removed 17 redundant places. [2022-11-18 19:56:37,107 INFO L231 Difference]: Finished difference. Result has 319 places, 300 transitions, 691 flow [2022-11-18 19:56:37,108 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=657, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=691, PETRI_PLACES=319, PETRI_TRANSITIONS=300} [2022-11-18 19:56:37,108 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 22 predicate places. [2022-11-18 19:56:37,108 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 300 transitions, 691 flow [2022-11-18 19:56:37,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 297.94117647058823) internal successors, (5065), 17 states have internal predecessors, (5065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:37,111 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:56:37,111 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:56:37,124 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b813f8c-22b1-4c13-8a9d-26d51f4cf269/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 19:56:37,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b813f8c-22b1-4c13-8a9d-26d51f4cf269/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:56:37,317 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-18 19:56:37,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:56:37,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1433410082, now seen corresponding path program 2 times [2022-11-18 19:56:37,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:56:37,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210574437] [2022-11-18 19:56:37,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:56:37,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:56:37,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:37,465 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-18 19:56:37,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:56:37,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210574437] [2022-11-18 19:56:37,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210574437] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:56:37,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:56:37,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:56:37,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594491528] [2022-11-18 19:56:37,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:56:37,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:56:37,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:56:37,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:56:37,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:56:37,470 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 332 [2022-11-18 19:56:37,472 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 300 transitions, 691 flow. Second operand has 6 states, 6 states have (on average 279.1666666666667) internal successors, (1675), 6 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:37,473 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:56:37,473 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 332 [2022-11-18 19:56:37,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:56:37,929 INFO L130 PetriNetUnfolder]: 318/2012 cut-off events. [2022-11-18 19:56:37,929 INFO L131 PetriNetUnfolder]: For 51/51 co-relation queries the response was YES. [2022-11-18 19:56:37,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2766 conditions, 2012 events. 318/2012 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 15782 event pairs, 46 based on Foata normal form. 0/1748 useless extension candidates. Maximal degree in co-relation 2754. Up to 440 conditions per place. [2022-11-18 19:56:37,953 INFO L137 encePairwiseOnDemand]: 326/332 looper letters, 44 selfloop transitions, 5 changer transitions 0/312 dead transitions. [2022-11-18 19:56:37,953 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 312 transitions, 816 flow [2022-11-18 19:56:37,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:56:37,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 19:56:37,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1712 transitions. [2022-11-18 19:56:37,957 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8594377510040161 [2022-11-18 19:56:37,957 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1712 transitions. [2022-11-18 19:56:37,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1712 transitions. [2022-11-18 19:56:37,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:56:37,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1712 transitions. [2022-11-18 19:56:37,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 285.3333333333333) internal successors, (1712), 6 states have internal predecessors, (1712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:37,965 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 332.0) internal successors, (2324), 7 states have internal predecessors, (2324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:37,966 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 332.0) internal successors, (2324), 7 states have internal predecessors, (2324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:37,966 INFO L175 Difference]: Start difference. First operand has 319 places, 300 transitions, 691 flow. Second operand 6 states and 1712 transitions. [2022-11-18 19:56:37,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 312 transitions, 816 flow [2022-11-18 19:56:37,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 312 transitions, 791 flow, removed 1 selfloop flow, removed 12 redundant places. [2022-11-18 19:56:37,973 INFO L231 Difference]: Finished difference. Result has 311 places, 299 transitions, 674 flow [2022-11-18 19:56:37,973 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=664, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=674, PETRI_PLACES=311, PETRI_TRANSITIONS=299} [2022-11-18 19:56:37,974 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 14 predicate places. [2022-11-18 19:56:37,974 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 299 transitions, 674 flow [2022-11-18 19:56:37,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 279.1666666666667) internal successors, (1675), 6 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:37,975 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:56:37,975 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:56:37,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 19:56:37,975 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-18 19:56:37,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:56:37,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1486038735, now seen corresponding path program 1 times [2022-11-18 19:56:37,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:56:37,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18883666] [2022-11-18 19:56:37,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:56:37,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:56:37,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:38,066 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-18 19:56:38,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:56:38,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18883666] [2022-11-18 19:56:38,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18883666] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:56:38,066 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:56:38,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:56:38,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577723031] [2022-11-18 19:56:38,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:56:38,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:56:38,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:56:38,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:56:38,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:56:38,069 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 288 out of 332 [2022-11-18 19:56:38,070 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 299 transitions, 674 flow. Second operand has 4 states, 4 states have (on average 289.75) internal successors, (1159), 4 states have internal predecessors, (1159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:38,070 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:56:38,071 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 288 of 332 [2022-11-18 19:56:38,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:56:38,317 INFO L130 PetriNetUnfolder]: 85/1074 cut-off events. [2022-11-18 19:56:38,317 INFO L131 PetriNetUnfolder]: For 18/20 co-relation queries the response was YES. [2022-11-18 19:56:38,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1371 conditions, 1074 events. 85/1074 cut-off events. For 18/20 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 6481 event pairs, 24 based on Foata normal form. 0/932 useless extension candidates. Maximal degree in co-relation 1359. Up to 84 conditions per place. [2022-11-18 19:56:38,330 INFO L137 encePairwiseOnDemand]: 326/332 looper letters, 32 selfloop transitions, 4 changer transitions 0/310 dead transitions. [2022-11-18 19:56:38,330 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 310 transitions, 771 flow [2022-11-18 19:56:38,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:56:38,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 19:56:38,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1190 transitions. [2022-11-18 19:56:38,333 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8960843373493976 [2022-11-18 19:56:38,333 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1190 transitions. [2022-11-18 19:56:38,333 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1190 transitions. [2022-11-18 19:56:38,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:56:38,334 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1190 transitions. [2022-11-18 19:56:38,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 297.5) internal successors, (1190), 4 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:38,339 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 332.0) internal successors, (1660), 5 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:38,340 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 332.0) internal successors, (1660), 5 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:38,340 INFO L175 Difference]: Start difference. First operand has 311 places, 299 transitions, 674 flow. Second operand 4 states and 1190 transitions. [2022-11-18 19:56:38,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 310 transitions, 771 flow [2022-11-18 19:56:38,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 310 transitions, 762 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 19:56:38,346 INFO L231 Difference]: Finished difference. Result has 312 places, 300 transitions, 689 flow [2022-11-18 19:56:38,347 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=663, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=689, PETRI_PLACES=312, PETRI_TRANSITIONS=300} [2022-11-18 19:56:38,347 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 15 predicate places. [2022-11-18 19:56:38,348 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 300 transitions, 689 flow [2022-11-18 19:56:38,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 289.75) internal successors, (1159), 4 states have internal predecessors, (1159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:38,348 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:56:38,348 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:56:38,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 19:56:38,349 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-18 19:56:38,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:56:38,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1596674048, now seen corresponding path program 1 times [2022-11-18 19:56:38,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:56:38,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389171190] [2022-11-18 19:56:38,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:56:38,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:56:38,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:38,446 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-18 19:56:38,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:56:38,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389171190] [2022-11-18 19:56:38,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389171190] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:56:38,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:56:38,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:56:38,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606967017] [2022-11-18 19:56:38,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:56:38,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:56:38,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:56:38,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:56:38,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:56:38,449 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 298 out of 332 [2022-11-18 19:56:38,450 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 300 transitions, 689 flow. Second operand has 4 states, 4 states have (on average 300.25) internal successors, (1201), 4 states have internal predecessors, (1201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:38,451 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:56:38,451 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 298 of 332 [2022-11-18 19:56:38,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:56:38,826 INFO L130 PetriNetUnfolder]: 162/1689 cut-off events. [2022-11-18 19:56:38,826 INFO L131 PetriNetUnfolder]: For 128/134 co-relation queries the response was YES. [2022-11-18 19:56:38,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2014 conditions, 1689 events. 162/1689 cut-off events. For 128/134 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 13140 event pairs, 18 based on Foata normal form. 0/1377 useless extension candidates. Maximal degree in co-relation 2000. Up to 147 conditions per place. [2022-11-18 19:56:38,846 INFO L137 encePairwiseOnDemand]: 324/332 looper letters, 21 selfloop transitions, 6 changer transitions 0/311 dead transitions. [2022-11-18 19:56:38,846 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 311 transitions, 768 flow [2022-11-18 19:56:38,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:56:38,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:56:38,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1519 transitions. [2022-11-18 19:56:38,850 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9150602409638554 [2022-11-18 19:56:38,850 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1519 transitions. [2022-11-18 19:56:38,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1519 transitions. [2022-11-18 19:56:38,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:56:38,851 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1519 transitions. [2022-11-18 19:56:38,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 303.8) internal successors, (1519), 5 states have internal predecessors, (1519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:38,857 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:38,858 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 332.0) internal successors, (1992), 6 states have internal predecessors, (1992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:38,858 INFO L175 Difference]: Start difference. First operand has 312 places, 300 transitions, 689 flow. Second operand 5 states and 1519 transitions. [2022-11-18 19:56:38,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 311 transitions, 768 flow [2022-11-18 19:56:38,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 311 transitions, 768 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 19:56:38,864 INFO L231 Difference]: Finished difference. Result has 319 places, 303 transitions, 725 flow [2022-11-18 19:56:38,865 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=689, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=725, PETRI_PLACES=319, PETRI_TRANSITIONS=303} [2022-11-18 19:56:38,866 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 22 predicate places. [2022-11-18 19:56:38,866 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 303 transitions, 725 flow [2022-11-18 19:56:38,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 300.25) internal successors, (1201), 4 states have internal predecessors, (1201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:38,866 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:56:38,867 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:56:38,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 19:56:38,867 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-18 19:56:38,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:56:38,867 INFO L85 PathProgramCache]: Analyzing trace with hash 569044688, now seen corresponding path program 1 times [2022-11-18 19:56:38,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:56:38,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241611321] [2022-11-18 19:56:38,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:56:38,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:56:38,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:38,980 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-18 19:56:38,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:56:38,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241611321] [2022-11-18 19:56:38,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241611321] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:56:38,981 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:56:38,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:56:38,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306563019] [2022-11-18 19:56:38,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:56:38,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:56:38,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:56:38,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:56:38,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:56:38,984 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 332 [2022-11-18 19:56:38,986 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 303 transitions, 725 flow. Second operand has 6 states, 6 states have (on average 279.3333333333333) internal successors, (1676), 6 states have internal predecessors, (1676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:38,986 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:56:38,986 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 332 [2022-11-18 19:56:38,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:56:39,872 INFO L130 PetriNetUnfolder]: 664/4235 cut-off events. [2022-11-18 19:56:39,872 INFO L131 PetriNetUnfolder]: For 318/318 co-relation queries the response was YES. [2022-11-18 19:56:39,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5859 conditions, 4235 events. 664/4235 cut-off events. For 318/318 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 43115 event pairs, 92 based on Foata normal form. 0/3620 useless extension candidates. Maximal degree in co-relation 5841. Up to 930 conditions per place. [2022-11-18 19:56:39,916 INFO L137 encePairwiseOnDemand]: 326/332 looper letters, 43 selfloop transitions, 5 changer transitions 0/314 dead transitions. [2022-11-18 19:56:39,916 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 314 transitions, 845 flow [2022-11-18 19:56:39,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:56:39,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 19:56:39,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1711 transitions. [2022-11-18 19:56:39,920 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8589357429718876 [2022-11-18 19:56:39,920 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1711 transitions. [2022-11-18 19:56:39,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1711 transitions. [2022-11-18 19:56:39,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:56:39,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1711 transitions. [2022-11-18 19:56:39,925 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 285.1666666666667) internal successors, (1711), 6 states have internal predecessors, (1711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:39,928 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 332.0) internal successors, (2324), 7 states have internal predecessors, (2324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:39,929 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 332.0) internal successors, (2324), 7 states have internal predecessors, (2324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:39,929 INFO L175 Difference]: Start difference. First operand has 319 places, 303 transitions, 725 flow. Second operand 6 states and 1711 transitions. [2022-11-18 19:56:39,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 314 transitions, 845 flow [2022-11-18 19:56:39,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 314 transitions, 841 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:56:39,936 INFO L231 Difference]: Finished difference. Result has 322 places, 302 transitions, 729 flow [2022-11-18 19:56:39,937 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=719, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=729, PETRI_PLACES=322, PETRI_TRANSITIONS=302} [2022-11-18 19:56:39,937 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 25 predicate places. [2022-11-18 19:56:39,937 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 302 transitions, 729 flow [2022-11-18 19:56:39,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 279.3333333333333) internal successors, (1676), 6 states have internal predecessors, (1676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:39,938 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:56:39,938 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:56:39,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 19:56:39,944 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-18 19:56:39,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:56:39,944 INFO L85 PathProgramCache]: Analyzing trace with hash 460517087, now seen corresponding path program 1 times [2022-11-18 19:56:39,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:56:39,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591092217] [2022-11-18 19:56:39,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:56:39,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:56:39,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:40,026 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-18 19:56:40,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:56:40,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591092217] [2022-11-18 19:56:40,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591092217] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:56:40,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:56:40,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:56:40,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365456891] [2022-11-18 19:56:40,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:56:40,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:56:40,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:56:40,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:56:40,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:56:40,030 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 288 out of 332 [2022-11-18 19:56:40,031 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 302 transitions, 729 flow. Second operand has 4 states, 4 states have (on average 290.0) internal successors, (1160), 4 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:40,031 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:56:40,031 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 288 of 332 [2022-11-18 19:56:40,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:56:40,541 INFO L130 PetriNetUnfolder]: 370/1958 cut-off events. [2022-11-18 19:56:40,541 INFO L131 PetriNetUnfolder]: For 372/378 co-relation queries the response was YES. [2022-11-18 19:56:40,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2832 conditions, 1958 events. 370/1958 cut-off events. For 372/378 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 19192 event pairs, 144 based on Foata normal form. 0/1462 useless extension candidates. Maximal degree in co-relation 2814. Up to 352 conditions per place. [2022-11-18 19:56:40,568 INFO L137 encePairwiseOnDemand]: 326/332 looper letters, 31 selfloop transitions, 4 changer transitions 0/312 dead transitions. [2022-11-18 19:56:40,569 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 312 transitions, 821 flow [2022-11-18 19:56:40,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:56:40,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 19:56:40,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1189 transitions. [2022-11-18 19:56:40,572 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8953313253012049 [2022-11-18 19:56:40,572 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1189 transitions. [2022-11-18 19:56:40,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1189 transitions. [2022-11-18 19:56:40,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:56:40,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1189 transitions. [2022-11-18 19:56:40,576 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 297.25) internal successors, (1189), 4 states have internal predecessors, (1189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:40,578 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 332.0) internal successors, (1660), 5 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:40,578 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 332.0) internal successors, (1660), 5 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:40,579 INFO L175 Difference]: Start difference. First operand has 322 places, 302 transitions, 729 flow. Second operand 4 states and 1189 transitions. [2022-11-18 19:56:40,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 312 transitions, 821 flow [2022-11-18 19:56:40,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 312 transitions, 812 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 19:56:40,585 INFO L231 Difference]: Finished difference. Result has 323 places, 303 transitions, 744 flow [2022-11-18 19:56:40,586 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=718, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=744, PETRI_PLACES=323, PETRI_TRANSITIONS=303} [2022-11-18 19:56:40,586 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 26 predicate places. [2022-11-18 19:56:40,587 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 303 transitions, 744 flow [2022-11-18 19:56:40,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 290.0) internal successors, (1160), 4 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:40,587 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:56:40,587 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:56:40,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 19:56:40,588 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-18 19:56:40,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:56:40,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1256828441, now seen corresponding path program 1 times [2022-11-18 19:56:40,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:56:40,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031287945] [2022-11-18 19:56:40,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:56:40,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:56:40,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:40,666 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-18 19:56:40,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:56:40,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031287945] [2022-11-18 19:56:40,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031287945] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:56:40,667 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:56:40,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:56:40,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111216359] [2022-11-18 19:56:40,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:56:40,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:56:40,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:56:40,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:56:40,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:56:40,670 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 288 out of 332 [2022-11-18 19:56:40,671 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 303 transitions, 744 flow. Second operand has 4 states, 4 states have (on average 290.25) internal successors, (1161), 4 states have internal predecessors, (1161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:40,671 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:56:40,672 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 288 of 332 [2022-11-18 19:56:40,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:56:41,094 INFO L130 PetriNetUnfolder]: 86/1865 cut-off events. [2022-11-18 19:56:41,095 INFO L131 PetriNetUnfolder]: For 98/100 co-relation queries the response was YES. [2022-11-18 19:56:41,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2374 conditions, 1865 events. 86/1865 cut-off events. For 98/100 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 13234 event pairs, 24 based on Foata normal form. 4/1665 useless extension candidates. Maximal degree in co-relation 2354. Up to 79 conditions per place. [2022-11-18 19:56:41,124 INFO L137 encePairwiseOnDemand]: 328/332 looper letters, 32 selfloop transitions, 3 changer transitions 0/312 dead transitions. [2022-11-18 19:56:41,125 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 312 transitions, 831 flow [2022-11-18 19:56:41,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:56:41,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 19:56:41,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1188 transitions. [2022-11-18 19:56:41,128 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8945783132530121 [2022-11-18 19:56:41,128 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1188 transitions. [2022-11-18 19:56:41,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1188 transitions. [2022-11-18 19:56:41,129 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:56:41,129 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1188 transitions. [2022-11-18 19:56:41,131 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 297.0) internal successors, (1188), 4 states have internal predecessors, (1188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:41,134 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 332.0) internal successors, (1660), 5 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:41,134 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 332.0) internal successors, (1660), 5 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:41,134 INFO L175 Difference]: Start difference. First operand has 323 places, 303 transitions, 744 flow. Second operand 4 states and 1188 transitions. [2022-11-18 19:56:41,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 312 transitions, 831 flow [2022-11-18 19:56:41,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 312 transitions, 829 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:56:41,141 INFO L231 Difference]: Finished difference. Result has 325 places, 302 transitions, 742 flow [2022-11-18 19:56:41,142 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=736, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=742, PETRI_PLACES=325, PETRI_TRANSITIONS=302} [2022-11-18 19:56:41,148 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 28 predicate places. [2022-11-18 19:56:41,148 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 302 transitions, 742 flow [2022-11-18 19:56:41,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 290.25) internal successors, (1161), 4 states have internal predecessors, (1161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:41,148 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:56:41,149 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:56:41,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 19:56:41,149 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-18 19:56:41,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:56:41,151 INFO L85 PathProgramCache]: Analyzing trace with hash 306976875, now seen corresponding path program 1 times [2022-11-18 19:56:41,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:56:41,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987031023] [2022-11-18 19:56:41,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:56:41,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:56:41,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:41,270 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-18 19:56:41,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:56:41,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987031023] [2022-11-18 19:56:41,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987031023] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:56:41,271 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:56:41,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:56:41,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995545711] [2022-11-18 19:56:41,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:56:41,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:56:41,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:56:41,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:56:41,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:56:41,274 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 332 [2022-11-18 19:56:41,276 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 302 transitions, 742 flow. Second operand has 6 states, 6 states have (on average 279.5) internal successors, (1677), 6 states have internal predecessors, (1677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:41,276 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:56:41,277 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 332 [2022-11-18 19:56:41,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:56:42,325 INFO L130 PetriNetUnfolder]: 561/4525 cut-off events. [2022-11-18 19:56:42,328 INFO L131 PetriNetUnfolder]: For 212/212 co-relation queries the response was YES. [2022-11-18 19:56:42,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6269 conditions, 4525 events. 561/4525 cut-off events. For 212/212 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 45551 event pairs, 70 based on Foata normal form. 0/4058 useless extension candidates. Maximal degree in co-relation 6249. Up to 848 conditions per place. [2022-11-18 19:56:42,370 INFO L137 encePairwiseOnDemand]: 326/332 looper letters, 42 selfloop transitions, 5 changer transitions 0/314 dead transitions. [2022-11-18 19:56:42,370 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 314 transitions, 863 flow [2022-11-18 19:56:42,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:56:42,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 19:56:42,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1710 transitions. [2022-11-18 19:56:42,377 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.858433734939759 [2022-11-18 19:56:42,377 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1710 transitions. [2022-11-18 19:56:42,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1710 transitions. [2022-11-18 19:56:42,379 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:56:42,379 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1710 transitions. [2022-11-18 19:56:42,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 285.0) internal successors, (1710), 6 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:42,390 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 332.0) internal successors, (2324), 7 states have internal predecessors, (2324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:42,391 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 332.0) internal successors, (2324), 7 states have internal predecessors, (2324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:42,391 INFO L175 Difference]: Start difference. First operand has 325 places, 302 transitions, 742 flow. Second operand 6 states and 1710 transitions. [2022-11-18 19:56:42,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 314 transitions, 863 flow [2022-11-18 19:56:42,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 314 transitions, 858 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 19:56:42,402 INFO L231 Difference]: Finished difference. Result has 327 places, 301 transitions, 745 flow [2022-11-18 19:56:42,402 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=735, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=745, PETRI_PLACES=327, PETRI_TRANSITIONS=301} [2022-11-18 19:56:42,403 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 30 predicate places. [2022-11-18 19:56:42,404 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 301 transitions, 745 flow [2022-11-18 19:56:42,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 279.5) internal successors, (1677), 6 states have internal predecessors, (1677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:42,404 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:56:42,405 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:56:42,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 19:56:42,405 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-18 19:56:42,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:56:42,406 INFO L85 PathProgramCache]: Analyzing trace with hash -928316752, now seen corresponding path program 1 times [2022-11-18 19:56:42,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:56:42,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892073180] [2022-11-18 19:56:42,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:56:42,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:56:42,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:42,539 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-18 19:56:42,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:56:42,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892073180] [2022-11-18 19:56:42,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892073180] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:56:42,540 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:56:42,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:56:42,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957209320] [2022-11-18 19:56:42,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:56:42,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:56:42,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:56:42,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:56:42,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:56:42,544 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 288 out of 332 [2022-11-18 19:56:42,546 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 301 transitions, 745 flow. Second operand has 4 states, 4 states have (on average 290.5) internal successors, (1162), 4 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:42,546 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:56:42,546 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 288 of 332 [2022-11-18 19:56:42,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:56:43,029 INFO L130 PetriNetUnfolder]: 98/1967 cut-off events. [2022-11-18 19:56:43,029 INFO L131 PetriNetUnfolder]: For 66/68 co-relation queries the response was YES. [2022-11-18 19:56:43,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2543 conditions, 1967 events. 98/1967 cut-off events. For 66/68 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 14493 event pairs, 36 based on Foata normal form. 4/1759 useless extension candidates. Maximal degree in co-relation 2523. Up to 117 conditions per place. [2022-11-18 19:56:43,061 INFO L137 encePairwiseOnDemand]: 328/332 looper letters, 29 selfloop transitions, 3 changer transitions 0/310 dead transitions. [2022-11-18 19:56:43,061 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 310 transitions, 828 flow [2022-11-18 19:56:43,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:56:43,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 19:56:43,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1185 transitions. [2022-11-18 19:56:43,064 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8923192771084337 [2022-11-18 19:56:43,064 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1185 transitions. [2022-11-18 19:56:43,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1185 transitions. [2022-11-18 19:56:43,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:56:43,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1185 transitions. [2022-11-18 19:56:43,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 296.25) internal successors, (1185), 4 states have internal predecessors, (1185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:43,069 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 332.0) internal successors, (1660), 5 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:43,070 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 332.0) internal successors, (1660), 5 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:43,070 INFO L175 Difference]: Start difference. First operand has 327 places, 301 transitions, 745 flow. Second operand 4 states and 1185 transitions. [2022-11-18 19:56:43,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 310 transitions, 828 flow [2022-11-18 19:56:43,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 310 transitions, 817 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 19:56:43,077 INFO L231 Difference]: Finished difference. Result has 325 places, 301 transitions, 743 flow [2022-11-18 19:56:43,078 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=730, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=743, PETRI_PLACES=325, PETRI_TRANSITIONS=301} [2022-11-18 19:56:43,079 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 28 predicate places. [2022-11-18 19:56:43,079 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 301 transitions, 743 flow [2022-11-18 19:56:43,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 290.5) internal successors, (1162), 4 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:43,080 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:56:43,080 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:56:43,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-18 19:56:43,080 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-18 19:56:43,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:56:43,081 INFO L85 PathProgramCache]: Analyzing trace with hash 815556039, now seen corresponding path program 1 times [2022-11-18 19:56:43,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:56:43,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270692804] [2022-11-18 19:56:43,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:56:43,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:56:43,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:43,241 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-18 19:56:43,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:56:43,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270692804] [2022-11-18 19:56:43,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270692804] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:56:43,241 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:56:43,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:56:43,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684117420] [2022-11-18 19:56:43,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:56:43,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:56:43,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:56:43,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:56:43,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:56:43,244 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 288 out of 332 [2022-11-18 19:56:43,245 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 301 transitions, 743 flow. Second operand has 4 states, 4 states have (on average 290.5) internal successors, (1162), 4 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:43,246 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:56:43,246 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 288 of 332 [2022-11-18 19:56:43,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:56:43,853 INFO L130 PetriNetUnfolder]: 468/2420 cut-off events. [2022-11-18 19:56:43,853 INFO L131 PetriNetUnfolder]: For 656/664 co-relation queries the response was YES. [2022-11-18 19:56:43,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3690 conditions, 2420 events. 468/2420 cut-off events. For 656/664 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 25052 event pairs, 192 based on Foata normal form. 18/1816 useless extension candidates. Maximal degree in co-relation 3669. Up to 456 conditions per place. [2022-11-18 19:56:43,892 INFO L137 encePairwiseOnDemand]: 328/332 looper letters, 31 selfloop transitions, 3 changer transitions 0/309 dead transitions. [2022-11-18 19:56:43,892 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 309 transitions, 825 flow [2022-11-18 19:56:43,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:56:43,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 19:56:43,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1187 transitions. [2022-11-18 19:56:43,894 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8938253012048193 [2022-11-18 19:56:43,895 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1187 transitions. [2022-11-18 19:56:43,895 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1187 transitions. [2022-11-18 19:56:43,895 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:56:43,896 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1187 transitions. [2022-11-18 19:56:43,897 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 296.75) internal successors, (1187), 4 states have internal predecessors, (1187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:43,900 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 332.0) internal successors, (1660), 5 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:43,900 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 332.0) internal successors, (1660), 5 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:43,900 INFO L175 Difference]: Start difference. First operand has 325 places, 301 transitions, 743 flow. Second operand 4 states and 1187 transitions. [2022-11-18 19:56:43,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 309 transitions, 825 flow [2022-11-18 19:56:43,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 309 transitions, 821 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 19:56:43,908 INFO L231 Difference]: Finished difference. Result has 326 places, 300 transitions, 739 flow [2022-11-18 19:56:43,909 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=733, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=739, PETRI_PLACES=326, PETRI_TRANSITIONS=300} [2022-11-18 19:56:43,909 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 29 predicate places. [2022-11-18 19:56:43,909 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 300 transitions, 739 flow [2022-11-18 19:56:43,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 290.5) internal successors, (1162), 4 states have internal predecessors, (1162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:43,910 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:56:43,910 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:56:43,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-18 19:56:43,910 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-18 19:56:43,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:56:43,911 INFO L85 PathProgramCache]: Analyzing trace with hash -487565603, now seen corresponding path program 1 times [2022-11-18 19:56:43,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:56:43,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953818989] [2022-11-18 19:56:43,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:56:43,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:56:43,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:44,076 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-18 19:56:44,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:56:44,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953818989] [2022-11-18 19:56:44,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953818989] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:56:44,077 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:56:44,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:56:44,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598667014] [2022-11-18 19:56:44,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:56:44,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:56:44,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:56:44,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:56:44,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:56:44,080 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 332 [2022-11-18 19:56:44,082 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 300 transitions, 739 flow. Second operand has 6 states, 6 states have (on average 279.6666666666667) internal successors, (1678), 6 states have internal predecessors, (1678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:44,082 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:56:44,082 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 332 [2022-11-18 19:56:44,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:56:45,332 INFO L130 PetriNetUnfolder]: 864/6027 cut-off events. [2022-11-18 19:56:45,332 INFO L131 PetriNetUnfolder]: For 594/594 co-relation queries the response was YES. [2022-11-18 19:56:45,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8579 conditions, 6027 events. 864/6027 cut-off events. For 594/594 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 68650 event pairs, 104 based on Foata normal form. 0/5221 useless extension candidates. Maximal degree in co-relation 8559. Up to 1354 conditions per place. [2022-11-18 19:56:45,373 INFO L137 encePairwiseOnDemand]: 326/332 looper letters, 41 selfloop transitions, 5 changer transitions 0/311 dead transitions. [2022-11-18 19:56:45,373 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 311 transitions, 855 flow [2022-11-18 19:56:45,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:56:45,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 19:56:45,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1709 transitions. [2022-11-18 19:56:45,380 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8579317269076305 [2022-11-18 19:56:45,380 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1709 transitions. [2022-11-18 19:56:45,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1709 transitions. [2022-11-18 19:56:45,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:56:45,382 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1709 transitions. [2022-11-18 19:56:45,387 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 284.8333333333333) internal successors, (1709), 6 states have internal predecessors, (1709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:45,391 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 332.0) internal successors, (2324), 7 states have internal predecessors, (2324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:45,392 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 332.0) internal successors, (2324), 7 states have internal predecessors, (2324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:45,392 INFO L175 Difference]: Start difference. First operand has 326 places, 300 transitions, 739 flow. Second operand 6 states and 1709 transitions. [2022-11-18 19:56:45,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 311 transitions, 855 flow [2022-11-18 19:56:45,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 311 transitions, 850 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 19:56:45,402 INFO L231 Difference]: Finished difference. Result has 328 places, 299 transitions, 742 flow [2022-11-18 19:56:45,403 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=732, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=742, PETRI_PLACES=328, PETRI_TRANSITIONS=299} [2022-11-18 19:56:45,403 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 31 predicate places. [2022-11-18 19:56:45,404 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 299 transitions, 742 flow [2022-11-18 19:56:45,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 279.6666666666667) internal successors, (1678), 6 states have internal predecessors, (1678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:45,404 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:56:45,405 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:56:45,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-18 19:56:45,405 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-18 19:56:45,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:56:45,405 INFO L85 PathProgramCache]: Analyzing trace with hash 162595504, now seen corresponding path program 1 times [2022-11-18 19:56:45,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:56:45,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308437326] [2022-11-18 19:56:45,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:56:45,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:56:45,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:45,608 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-18 19:56:45,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:56:45,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308437326] [2022-11-18 19:56:45,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308437326] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:56:45,608 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:56:45,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:56:45,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374242707] [2022-11-18 19:56:45,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:56:45,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 19:56:45,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:56:45,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 19:56:45,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:56:45,613 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 332 [2022-11-18 19:56:45,615 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 299 transitions, 742 flow. Second operand has 8 states, 8 states have (on average 274.25) internal successors, (2194), 8 states have internal predecessors, (2194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:45,615 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:56:45,615 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 332 [2022-11-18 19:56:45,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:56:46,834 INFO L130 PetriNetUnfolder]: 795/5197 cut-off events. [2022-11-18 19:56:46,835 INFO L131 PetriNetUnfolder]: For 398/398 co-relation queries the response was YES. [2022-11-18 19:56:46,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7798 conditions, 5197 events. 795/5197 cut-off events. For 398/398 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 54775 event pairs, 70 based on Foata normal form. 0/4763 useless extension candidates. Maximal degree in co-relation 7778. Up to 786 conditions per place. [2022-11-18 19:56:46,880 INFO L137 encePairwiseOnDemand]: 322/332 looper letters, 57 selfloop transitions, 9 changer transitions 0/326 dead transitions. [2022-11-18 19:56:46,880 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 326 transitions, 941 flow [2022-11-18 19:56:46,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 19:56:46,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 19:56:46,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2243 transitions. [2022-11-18 19:56:46,885 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8445030120481928 [2022-11-18 19:56:46,886 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2243 transitions. [2022-11-18 19:56:46,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2243 transitions. [2022-11-18 19:56:46,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:56:46,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2243 transitions. [2022-11-18 19:56:46,892 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 280.375) internal successors, (2243), 8 states have internal predecessors, (2243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:46,897 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 332.0) internal successors, (2988), 9 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:46,898 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 332.0) internal successors, (2988), 9 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:46,898 INFO L175 Difference]: Start difference. First operand has 328 places, 299 transitions, 742 flow. Second operand 8 states and 2243 transitions. [2022-11-18 19:56:46,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 326 transitions, 941 flow [2022-11-18 19:56:46,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 326 transitions, 924 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 19:56:46,910 INFO L231 Difference]: Finished difference. Result has 333 places, 300 transitions, 763 flow [2022-11-18 19:56:46,911 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=733, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=763, PETRI_PLACES=333, PETRI_TRANSITIONS=300} [2022-11-18 19:56:46,911 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 36 predicate places. [2022-11-18 19:56:46,912 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 300 transitions, 763 flow [2022-11-18 19:56:46,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 274.25) internal successors, (2194), 8 states have internal predecessors, (2194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:46,913 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:56:46,914 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:56:46,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-18 19:56:46,914 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-18 19:56:46,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:56:46,915 INFO L85 PathProgramCache]: Analyzing trace with hash 745494208, now seen corresponding path program 1 times [2022-11-18 19:56:46,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:56:46,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032932332] [2022-11-18 19:56:46,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:56:46,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:56:46,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:47,153 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-18 19:56:47,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:56:47,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032932332] [2022-11-18 19:56:47,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032932332] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:56:47,154 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:56:47,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:56:47,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280380738] [2022-11-18 19:56:47,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:56:47,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 19:56:47,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:56:47,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 19:56:47,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:56:47,158 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 332 [2022-11-18 19:56:47,160 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 300 transitions, 763 flow. Second operand has 8 states, 8 states have (on average 274.375) internal successors, (2195), 8 states have internal predecessors, (2195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:47,160 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:56:47,160 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 332 [2022-11-18 19:56:47,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:56:48,250 INFO L130 PetriNetUnfolder]: 687/5049 cut-off events. [2022-11-18 19:56:48,250 INFO L131 PetriNetUnfolder]: For 404/404 co-relation queries the response was YES. [2022-11-18 19:56:48,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7518 conditions, 5049 events. 687/5049 cut-off events. For 404/404 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 52949 event pairs, 70 based on Foata normal form. 0/4675 useless extension candidates. Maximal degree in co-relation 7496. Up to 710 conditions per place. [2022-11-18 19:56:48,312 INFO L137 encePairwiseOnDemand]: 322/332 looper letters, 60 selfloop transitions, 9 changer transitions 0/329 dead transitions. [2022-11-18 19:56:48,312 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 329 transitions, 971 flow [2022-11-18 19:56:48,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 19:56:48,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 19:56:48,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2245 transitions. [2022-11-18 19:56:48,316 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8452560240963856 [2022-11-18 19:56:48,316 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2245 transitions. [2022-11-18 19:56:48,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2245 transitions. [2022-11-18 19:56:48,317 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:56:48,317 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2245 transitions. [2022-11-18 19:56:48,320 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 280.625) internal successors, (2245), 8 states have internal predecessors, (2245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:48,324 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 332.0) internal successors, (2988), 9 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:48,326 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 332.0) internal successors, (2988), 9 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:48,326 INFO L175 Difference]: Start difference. First operand has 333 places, 300 transitions, 763 flow. Second operand 8 states and 2245 transitions. [2022-11-18 19:56:48,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 329 transitions, 971 flow [2022-11-18 19:56:48,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 329 transitions, 962 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 19:56:48,336 INFO L231 Difference]: Finished difference. Result has 338 places, 301 transitions, 784 flow [2022-11-18 19:56:48,337 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=754, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=784, PETRI_PLACES=338, PETRI_TRANSITIONS=301} [2022-11-18 19:56:48,337 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 41 predicate places. [2022-11-18 19:56:48,338 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 301 transitions, 784 flow [2022-11-18 19:56:48,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 274.375) internal successors, (2195), 8 states have internal predecessors, (2195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:48,339 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:56:48,339 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:56:48,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-18 19:56:48,339 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-18 19:56:48,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:56:48,340 INFO L85 PathProgramCache]: Analyzing trace with hash 20543650, now seen corresponding path program 1 times [2022-11-18 19:56:48,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:56:48,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237027346] [2022-11-18 19:56:48,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:56:48,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:56:48,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:48,424 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-18 19:56:48,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:56:48,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237027346] [2022-11-18 19:56:48,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237027346] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:56:48,425 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:56:48,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:56:48,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235904366] [2022-11-18 19:56:48,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:56:48,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:56:48,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:56:48,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:56:48,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:56:48,427 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 288 out of 332 [2022-11-18 19:56:48,428 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 301 transitions, 784 flow. Second operand has 4 states, 4 states have (on average 290.75) internal successors, (1163), 4 states have internal predecessors, (1163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:48,429 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:56:48,429 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 288 of 332 [2022-11-18 19:56:48,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:56:49,073 INFO L130 PetriNetUnfolder]: 578/2900 cut-off events. [2022-11-18 19:56:49,074 INFO L131 PetriNetUnfolder]: For 641/649 co-relation queries the response was YES. [2022-11-18 19:56:49,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4474 conditions, 2900 events. 578/2900 cut-off events. For 641/649 co-relation queries the response was YES. Maximal size of possible extension queue 543. Compared 32471 event pairs, 288 based on Foata normal form. 18/2160 useless extension candidates. Maximal degree in co-relation 4450. Up to 623 conditions per place. [2022-11-18 19:56:49,092 INFO L137 encePairwiseOnDemand]: 328/332 looper letters, 28 selfloop transitions, 3 changer transitions 0/309 dead transitions. [2022-11-18 19:56:49,092 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 309 transitions, 862 flow [2022-11-18 19:56:49,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:56:49,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 19:56:49,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1184 transitions. [2022-11-18 19:56:49,095 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.891566265060241 [2022-11-18 19:56:49,095 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1184 transitions. [2022-11-18 19:56:49,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1184 transitions. [2022-11-18 19:56:49,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:56:49,096 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1184 transitions. [2022-11-18 19:56:49,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 296.0) internal successors, (1184), 4 states have internal predecessors, (1184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:49,100 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 332.0) internal successors, (1660), 5 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:49,100 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 332.0) internal successors, (1660), 5 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:49,100 INFO L175 Difference]: Start difference. First operand has 338 places, 301 transitions, 784 flow. Second operand 4 states and 1184 transitions. [2022-11-18 19:56:49,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 309 transitions, 862 flow [2022-11-18 19:56:49,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 309 transitions, 851 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 19:56:49,108 INFO L231 Difference]: Finished difference. Result has 336 places, 301 transitions, 782 flow [2022-11-18 19:56:49,108 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=769, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=782, PETRI_PLACES=336, PETRI_TRANSITIONS=301} [2022-11-18 19:56:49,109 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 39 predicate places. [2022-11-18 19:56:49,109 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 301 transitions, 782 flow [2022-11-18 19:56:49,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 290.75) internal successors, (1163), 4 states have internal predecessors, (1163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:49,110 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:56:49,110 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:56:49,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-18 19:56:49,110 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-18 19:56:49,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:56:49,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1066628924, now seen corresponding path program 1 times [2022-11-18 19:56:49,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:56:49,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728452364] [2022-11-18 19:56:49,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:56:49,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:56:49,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:49,277 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-18 19:56:49,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:56:49,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728452364] [2022-11-18 19:56:49,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728452364] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:56:49,278 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:56:49,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 19:56:49,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100040345] [2022-11-18 19:56:49,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:56:49,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:56:49,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:56:49,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:56:49,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:56:49,281 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 332 [2022-11-18 19:56:49,283 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 301 transitions, 782 flow. Second operand has 6 states, 6 states have (on average 279.5) internal successors, (1677), 6 states have internal predecessors, (1677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:49,283 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:56:49,283 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 332 [2022-11-18 19:56:49,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:56:49,632 INFO L130 PetriNetUnfolder]: 66/849 cut-off events. [2022-11-18 19:56:49,633 INFO L131 PetriNetUnfolder]: For 51/51 co-relation queries the response was YES. [2022-11-18 19:56:49,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1319 conditions, 849 events. 66/849 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 4488 event pairs, 36 based on Foata normal form. 0/793 useless extension candidates. Maximal degree in co-relation 1294. Up to 117 conditions per place. [2022-11-18 19:56:49,651 INFO L137 encePairwiseOnDemand]: 319/332 looper letters, 51 selfloop transitions, 13 changer transitions 0/325 dead transitions. [2022-11-18 19:56:49,652 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 325 transitions, 967 flow [2022-11-18 19:56:49,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:56:49,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 19:56:49,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2549 transitions. [2022-11-18 19:56:49,655 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8530789825970548 [2022-11-18 19:56:49,656 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2549 transitions. [2022-11-18 19:56:49,656 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2549 transitions. [2022-11-18 19:56:49,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:56:49,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2549 transitions. [2022-11-18 19:56:49,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 283.22222222222223) internal successors, (2549), 9 states have internal predecessors, (2549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:49,664 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 332.0) internal successors, (3320), 10 states have internal predecessors, (3320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:49,665 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 332.0) internal successors, (3320), 10 states have internal predecessors, (3320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:49,665 INFO L175 Difference]: Start difference. First operand has 336 places, 301 transitions, 782 flow. Second operand 9 states and 2549 transitions. [2022-11-18 19:56:49,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 325 transitions, 967 flow [2022-11-18 19:56:49,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 325 transitions, 965 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:56:49,673 INFO L231 Difference]: Finished difference. Result has 348 places, 307 transitions, 850 flow [2022-11-18 19:56:49,673 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=780, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=850, PETRI_PLACES=348, PETRI_TRANSITIONS=307} [2022-11-18 19:56:49,674 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 51 predicate places. [2022-11-18 19:56:49,674 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 307 transitions, 850 flow [2022-11-18 19:56:49,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 279.5) internal successors, (1677), 6 states have internal predecessors, (1677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:49,675 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:56:49,675 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:56:49,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-18 19:56:49,675 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-18 19:56:49,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:56:49,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1861800013, now seen corresponding path program 1 times [2022-11-18 19:56:49,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:56:49,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536287343] [2022-11-18 19:56:49,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:56:49,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:56:49,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:49,814 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-18 19:56:49,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:56:49,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536287343] [2022-11-18 19:56:49,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536287343] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:56:49,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099386349] [2022-11-18 19:56:49,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:56:49,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:56:49,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b813f8c-22b1-4c13-8a9d-26d51f4cf269/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:56:49,819 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b813f8c-22b1-4c13-8a9d-26d51f4cf269/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:56:49,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b813f8c-22b1-4c13-8a9d-26d51f4cf269/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 19:56:49,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:49,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:56:49,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:56:50,036 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-18 19:56:50,037 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:56:50,135 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-18 19:56:50,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2099386349] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:56:50,135 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:56:50,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-18 19:56:50,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741421296] [2022-11-18 19:56:50,138 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:56:50,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 19:56:50,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:56:50,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 19:56:50,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-18 19:56:50,143 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 298 out of 332 [2022-11-18 19:56:50,146 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 307 transitions, 850 flow. Second operand has 12 states, 12 states have (on average 300.8333333333333) internal successors, (3610), 12 states have internal predecessors, (3610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:50,146 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:56:50,146 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 298 of 332 [2022-11-18 19:56:50,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:56:51,008 INFO L130 PetriNetUnfolder]: 51/2824 cut-off events. [2022-11-18 19:56:51,008 INFO L131 PetriNetUnfolder]: For 183/184 co-relation queries the response was YES. [2022-11-18 19:56:51,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3870 conditions, 2824 events. 51/2824 cut-off events. For 183/184 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 22781 event pairs, 3 based on Foata normal form. 6/2668 useless extension candidates. Maximal degree in co-relation 3841. Up to 69 conditions per place. [2022-11-18 19:56:51,046 INFO L137 encePairwiseOnDemand]: 323/332 looper letters, 50 selfloop transitions, 20 changer transitions 0/357 dead transitions. [2022-11-18 19:56:51,046 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 357 transitions, 1138 flow [2022-11-18 19:56:51,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 19:56:51,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-18 19:56:51,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 5437 transitions. [2022-11-18 19:56:51,056 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.909805890227577 [2022-11-18 19:56:51,057 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 5437 transitions. [2022-11-18 19:56:51,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 5437 transitions. [2022-11-18 19:56:51,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:56:51,059 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 5437 transitions. [2022-11-18 19:56:51,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 302.05555555555554) internal successors, (5437), 18 states have internal predecessors, (5437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:51,079 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 332.0) internal successors, (6308), 19 states have internal predecessors, (6308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:51,081 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 332.0) internal successors, (6308), 19 states have internal predecessors, (6308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:51,082 INFO L175 Difference]: Start difference. First operand has 348 places, 307 transitions, 850 flow. Second operand 18 states and 5437 transitions. [2022-11-18 19:56:51,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 357 transitions, 1138 flow [2022-11-18 19:56:51,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 357 transitions, 1138 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 19:56:51,093 INFO L231 Difference]: Finished difference. Result has 369 places, 319 transitions, 962 flow [2022-11-18 19:56:51,093 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=850, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=962, PETRI_PLACES=369, PETRI_TRANSITIONS=319} [2022-11-18 19:56:51,094 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 72 predicate places. [2022-11-18 19:56:51,094 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 319 transitions, 962 flow [2022-11-18 19:56:51,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 300.8333333333333) internal successors, (3610), 12 states have internal predecessors, (3610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:51,095 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:56:51,096 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:56:51,107 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b813f8c-22b1-4c13-8a9d-26d51f4cf269/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 19:56:51,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b813f8c-22b1-4c13-8a9d-26d51f4cf269/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-18 19:56:51,302 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-18 19:56:51,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:56:51,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1881224706, now seen corresponding path program 1 times [2022-11-18 19:56:51,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:56:51,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944019681] [2022-11-18 19:56:51,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:56:51,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:56:51,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:51,430 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-18 19:56:51,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:56:51,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944019681] [2022-11-18 19:56:51,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944019681] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:56:51,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [997880294] [2022-11-18 19:56:51,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:56:51,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:56:51,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b813f8c-22b1-4c13-8a9d-26d51f4cf269/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:56:51,432 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b813f8c-22b1-4c13-8a9d-26d51f4cf269/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:56:51,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b813f8c-22b1-4c13-8a9d-26d51f4cf269/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 19:56:51,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:51,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:56:51,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:56:51,642 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-18 19:56:51,642 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:56:51,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [997880294] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:56:51,643 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:56:51,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 19:56:51,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69153461] [2022-11-18 19:56:51,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:56:51,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:56:51,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:56:51,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:56:51,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:56:51,646 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 298 out of 332 [2022-11-18 19:56:51,648 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 319 transitions, 962 flow. Second operand has 6 states, 6 states have (on average 300.6666666666667) internal successors, (1804), 6 states have internal predecessors, (1804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:51,648 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:56:51,648 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 298 of 332 [2022-11-18 19:56:51,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:56:52,278 INFO L130 PetriNetUnfolder]: 43/1680 cut-off events. [2022-11-18 19:56:52,278 INFO L131 PetriNetUnfolder]: For 272/272 co-relation queries the response was YES. [2022-11-18 19:56:52,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2585 conditions, 1680 events. 43/1680 cut-off events. For 272/272 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 10346 event pairs, 0 based on Foata normal form. 8/1648 useless extension candidates. Maximal degree in co-relation 2552. Up to 71 conditions per place. [2022-11-18 19:56:52,312 INFO L137 encePairwiseOnDemand]: 325/332 looper letters, 25 selfloop transitions, 13 changer transitions 0/325 dead transitions. [2022-11-18 19:56:52,312 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 325 transitions, 1039 flow [2022-11-18 19:56:52,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:56:52,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 19:56:52,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2116 transitions. [2022-11-18 19:56:52,315 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9104991394148021 [2022-11-18 19:56:52,315 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2116 transitions. [2022-11-18 19:56:52,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2116 transitions. [2022-11-18 19:56:52,316 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:56:52,317 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2116 transitions. [2022-11-18 19:56:52,319 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 302.2857142857143) internal successors, (2116), 7 states have internal predecessors, (2116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:52,322 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 332.0) internal successors, (2656), 8 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:52,323 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 332.0) internal successors, (2656), 8 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:52,323 INFO L175 Difference]: Start difference. First operand has 369 places, 319 transitions, 962 flow. Second operand 7 states and 2116 transitions. [2022-11-18 19:56:52,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 325 transitions, 1039 flow [2022-11-18 19:56:52,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 325 transitions, 1003 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-11-18 19:56:52,333 INFO L231 Difference]: Finished difference. Result has 365 places, 315 transitions, 925 flow [2022-11-18 19:56:52,334 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=899, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=925, PETRI_PLACES=365, PETRI_TRANSITIONS=315} [2022-11-18 19:56:52,335 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 68 predicate places. [2022-11-18 19:56:52,335 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 315 transitions, 925 flow [2022-11-18 19:56:52,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 300.6666666666667) internal successors, (1804), 6 states have internal predecessors, (1804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:52,335 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:56:52,336 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:56:52,342 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b813f8c-22b1-4c13-8a9d-26d51f4cf269/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 19:56:52,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b813f8c-22b1-4c13-8a9d-26d51f4cf269/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-18 19:56:52,542 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-18 19:56:52,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:56:52,542 INFO L85 PathProgramCache]: Analyzing trace with hash -914602078, now seen corresponding path program 1 times [2022-11-18 19:56:52,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:56:52,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486744705] [2022-11-18 19:56:52,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:56:52,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:56:52,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:52,745 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-18 19:56:52,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:56:52,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486744705] [2022-11-18 19:56:52,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486744705] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:56:52,746 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:56:52,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:56:52,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663934154] [2022-11-18 19:56:52,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:56:52,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 19:56:52,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:56:52,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 19:56:52,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:56:52,751 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 332 [2022-11-18 19:56:52,753 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 315 transitions, 925 flow. Second operand has 8 states, 8 states have (on average 274.375) internal successors, (2195), 8 states have internal predecessors, (2195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:52,754 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:56:52,754 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 332 [2022-11-18 19:56:52,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:56:55,997 INFO L130 PetriNetUnfolder]: 2629/14411 cut-off events. [2022-11-18 19:56:55,998 INFO L131 PetriNetUnfolder]: For 2135/2135 co-relation queries the response was YES. [2022-11-18 19:56:56,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22811 conditions, 14411 events. 2629/14411 cut-off events. For 2135/2135 co-relation queries the response was YES. Maximal size of possible extension queue 712. Compared 187670 event pairs, 214 based on Foata normal form. 0/12915 useless extension candidates. Maximal degree in co-relation 22779. Up to 2412 conditions per place. [2022-11-18 19:56:56,124 INFO L137 encePairwiseOnDemand]: 322/332 looper letters, 56 selfloop transitions, 9 changer transitions 0/341 dead transitions. [2022-11-18 19:56:56,125 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 341 transitions, 1111 flow [2022-11-18 19:56:56,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 19:56:56,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 19:56:56,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2242 transitions. [2022-11-18 19:56:56,128 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8441265060240963 [2022-11-18 19:56:56,128 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2242 transitions. [2022-11-18 19:56:56,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2242 transitions. [2022-11-18 19:56:56,129 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:56:56,129 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2242 transitions. [2022-11-18 19:56:56,132 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 280.25) internal successors, (2242), 8 states have internal predecessors, (2242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:56,135 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 332.0) internal successors, (2988), 9 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:56,135 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 332.0) internal successors, (2988), 9 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:56,135 INFO L175 Difference]: Start difference. First operand has 365 places, 315 transitions, 925 flow. Second operand 8 states and 2242 transitions. [2022-11-18 19:56:56,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 341 transitions, 1111 flow [2022-11-18 19:56:56,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 341 transitions, 1093 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 19:56:56,162 INFO L231 Difference]: Finished difference. Result has 369 places, 316 transitions, 937 flow [2022-11-18 19:56:56,162 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=907, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=937, PETRI_PLACES=369, PETRI_TRANSITIONS=316} [2022-11-18 19:56:56,163 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 72 predicate places. [2022-11-18 19:56:56,163 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 316 transitions, 937 flow [2022-11-18 19:56:56,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 274.375) internal successors, (2195), 8 states have internal predecessors, (2195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:56,164 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:56:56,164 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:56:56,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-18 19:56:56,164 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-18 19:56:56,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:56:56,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1712107630, now seen corresponding path program 1 times [2022-11-18 19:56:56,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:56:56,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061535050] [2022-11-18 19:56:56,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:56:56,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:56:56,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:56,330 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-18 19:56:56,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:56:56,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061535050] [2022-11-18 19:56:56,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061535050] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:56:56,331 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:56:56,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:56:56,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610991128] [2022-11-18 19:56:56,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:56:56,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 19:56:56,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:56:56,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 19:56:56,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:56:56,335 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 332 [2022-11-18 19:56:56,336 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 316 transitions, 937 flow. Second operand has 8 states, 8 states have (on average 274.5) internal successors, (2196), 8 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:56,336 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:56:56,337 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 332 [2022-11-18 19:56:56,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:56:59,321 INFO L130 PetriNetUnfolder]: 2233/13879 cut-off events. [2022-11-18 19:56:59,321 INFO L131 PetriNetUnfolder]: For 2505/2505 co-relation queries the response was YES. [2022-11-18 19:56:59,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22399 conditions, 13879 events. 2233/13879 cut-off events. For 2505/2505 co-relation queries the response was YES. Maximal size of possible extension queue 568. Compared 178004 event pairs, 214 based on Foata normal form. 0/12675 useless extension candidates. Maximal degree in co-relation 22365. Up to 2144 conditions per place. [2022-11-18 19:56:59,435 INFO L137 encePairwiseOnDemand]: 322/332 looper letters, 59 selfloop transitions, 9 changer transitions 0/344 dead transitions. [2022-11-18 19:56:59,435 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 344 transitions, 1140 flow [2022-11-18 19:56:59,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 19:56:59,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 19:56:59,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2244 transitions. [2022-11-18 19:56:59,438 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8448795180722891 [2022-11-18 19:56:59,439 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2244 transitions. [2022-11-18 19:56:59,439 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2244 transitions. [2022-11-18 19:56:59,440 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:56:59,440 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2244 transitions. [2022-11-18 19:56:59,443 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 280.5) internal successors, (2244), 8 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:59,446 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 332.0) internal successors, (2988), 9 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:59,446 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 332.0) internal successors, (2988), 9 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:59,446 INFO L175 Difference]: Start difference. First operand has 369 places, 316 transitions, 937 flow. Second operand 8 states and 2244 transitions. [2022-11-18 19:56:59,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 344 transitions, 1140 flow [2022-11-18 19:56:59,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 344 transitions, 1131 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 19:56:59,491 INFO L231 Difference]: Finished difference. Result has 374 places, 317 transitions, 958 flow [2022-11-18 19:56:59,491 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=928, PETRI_DIFFERENCE_MINUEND_PLACES=365, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=958, PETRI_PLACES=374, PETRI_TRANSITIONS=317} [2022-11-18 19:56:59,492 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 77 predicate places. [2022-11-18 19:56:59,492 INFO L495 AbstractCegarLoop]: Abstraction has has 374 places, 317 transitions, 958 flow [2022-11-18 19:56:59,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 274.5) internal successors, (2196), 8 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:59,493 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:56:59,493 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:56:59,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-18 19:56:59,493 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-18 19:56:59,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:56:59,494 INFO L85 PathProgramCache]: Analyzing trace with hash 135936754, now seen corresponding path program 1 times [2022-11-18 19:56:59,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:56:59,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869931355] [2022-11-18 19:56:59,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:56:59,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:56:59,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:59,669 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-18 19:56:59,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:56:59,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869931355] [2022-11-18 19:56:59,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869931355] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:56:59,671 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:56:59,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 19:56:59,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688440403] [2022-11-18 19:56:59,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:56:59,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:56:59,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:56:59,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:56:59,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:56:59,674 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 332 [2022-11-18 19:56:59,675 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 317 transitions, 958 flow. Second operand has 6 states, 6 states have (on average 279.6666666666667) internal successors, (1678), 6 states have internal predecessors, (1678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:59,675 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:56:59,676 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 332 [2022-11-18 19:56:59,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:57:00,970 INFO L130 PetriNetUnfolder]: 1090/5125 cut-off events. [2022-11-18 19:57:00,970 INFO L131 PetriNetUnfolder]: For 1515/1532 co-relation queries the response was YES. [2022-11-18 19:57:01,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8670 conditions, 5125 events. 1090/5125 cut-off events. For 1515/1532 co-relation queries the response was YES. Maximal size of possible extension queue 596. Compared 62249 event pairs, 646 based on Foata normal form. 0/3998 useless extension candidates. Maximal degree in co-relation 8634. Up to 1282 conditions per place. [2022-11-18 19:57:01,019 INFO L137 encePairwiseOnDemand]: 319/332 looper letters, 43 selfloop transitions, 13 changer transitions 6/339 dead transitions. [2022-11-18 19:57:01,019 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 339 transitions, 1133 flow [2022-11-18 19:57:01,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:57:01,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 19:57:01,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2547 transitions. [2022-11-18 19:57:01,023 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8524096385542169 [2022-11-18 19:57:01,023 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2547 transitions. [2022-11-18 19:57:01,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2547 transitions. [2022-11-18 19:57:01,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:57:01,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2547 transitions. [2022-11-18 19:57:01,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 283.0) internal successors, (2547), 9 states have internal predecessors, (2547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:01,028 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 332.0) internal successors, (3320), 10 states have internal predecessors, (3320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:01,028 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 332.0) internal successors, (3320), 10 states have internal predecessors, (3320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:01,028 INFO L175 Difference]: Start difference. First operand has 374 places, 317 transitions, 958 flow. Second operand 9 states and 2547 transitions. [2022-11-18 19:57:01,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 339 transitions, 1133 flow [2022-11-18 19:57:01,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 339 transitions, 1124 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 19:57:01,040 INFO L231 Difference]: Finished difference. Result has 383 places, 323 transitions, 1019 flow [2022-11-18 19:57:01,041 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=949, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1019, PETRI_PLACES=383, PETRI_TRANSITIONS=323} [2022-11-18 19:57:01,041 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 86 predicate places. [2022-11-18 19:57:01,042 INFO L495 AbstractCegarLoop]: Abstraction has has 383 places, 323 transitions, 1019 flow [2022-11-18 19:57:01,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 279.6666666666667) internal successors, (1678), 6 states have internal predecessors, (1678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:01,042 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:57:01,042 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:57:01,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-18 19:57:01,043 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-18 19:57:01,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:57:01,043 INFO L85 PathProgramCache]: Analyzing trace with hash -659234335, now seen corresponding path program 1 times [2022-11-18 19:57:01,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:57:01,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720487139] [2022-11-18 19:57:01,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:57:01,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:57:01,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:01,160 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-18 19:57:01,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:57:01,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720487139] [2022-11-18 19:57:01,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720487139] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:57:01,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758289731] [2022-11-18 19:57:01,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:57:01,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:57:01,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b813f8c-22b1-4c13-8a9d-26d51f4cf269/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:57:01,162 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b813f8c-22b1-4c13-8a9d-26d51f4cf269/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:57:01,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b813f8c-22b1-4c13-8a9d-26d51f4cf269/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 19:57:01,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:01,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:57:01,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:57:01,469 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-18 19:57:01,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:57:01,557 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-18 19:57:01,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [758289731] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:57:01,558 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:57:01,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-18 19:57:01,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428175891] [2022-11-18 19:57:01,559 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:57:01,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 19:57:01,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:57:01,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 19:57:01,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-18 19:57:01,564 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 298 out of 332 [2022-11-18 19:57:01,568 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 323 transitions, 1019 flow. Second operand has 12 states, 12 states have (on average 300.9166666666667) internal successors, (3611), 12 states have internal predecessors, (3611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:01,568 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:57:01,568 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 298 of 332 [2022-11-18 19:57:01,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:57:05,265 INFO L130 PetriNetUnfolder]: 767/12066 cut-off events. [2022-11-18 19:57:05,266 INFO L131 PetriNetUnfolder]: For 2136/2153 co-relation queries the response was YES. [2022-11-18 19:57:05,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19053 conditions, 12066 events. 767/12066 cut-off events. For 2136/2153 co-relation queries the response was YES. Maximal size of possible extension queue 578. Compared 156559 event pairs, 51 based on Foata normal form. 54/11550 useless extension candidates. Maximal degree in co-relation 19013. Up to 765 conditions per place. [2022-11-18 19:57:05,377 INFO L137 encePairwiseOnDemand]: 323/332 looper letters, 46 selfloop transitions, 20 changer transitions 0/369 dead transitions. [2022-11-18 19:57:05,378 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 369 transitions, 1287 flow [2022-11-18 19:57:05,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 19:57:05,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-18 19:57:05,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 5433 transitions. [2022-11-18 19:57:05,385 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9091365461847389 [2022-11-18 19:57:05,386 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 5433 transitions. [2022-11-18 19:57:05,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 5433 transitions. [2022-11-18 19:57:05,388 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:57:05,388 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 5433 transitions. [2022-11-18 19:57:05,398 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 301.8333333333333) internal successors, (5433), 18 states have internal predecessors, (5433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:05,406 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 332.0) internal successors, (6308), 19 states have internal predecessors, (6308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:05,408 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 332.0) internal successors, (6308), 19 states have internal predecessors, (6308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:05,408 INFO L175 Difference]: Start difference. First operand has 383 places, 323 transitions, 1019 flow. Second operand 18 states and 5433 transitions. [2022-11-18 19:57:05,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 369 transitions, 1287 flow [2022-11-18 19:57:05,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 369 transitions, 1287 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 19:57:05,463 INFO L231 Difference]: Finished difference. Result has 404 places, 335 transitions, 1131 flow [2022-11-18 19:57:05,464 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=1019, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1131, PETRI_PLACES=404, PETRI_TRANSITIONS=335} [2022-11-18 19:57:05,464 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 107 predicate places. [2022-11-18 19:57:05,464 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 335 transitions, 1131 flow [2022-11-18 19:57:05,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 300.9166666666667) internal successors, (3611), 12 states have internal predecessors, (3611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:05,465 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:57:05,466 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:57:05,480 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b813f8c-22b1-4c13-8a9d-26d51f4cf269/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 19:57:05,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b813f8c-22b1-4c13-8a9d-26d51f4cf269/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-18 19:57:05,681 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-18 19:57:05,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:57:05,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1038573040, now seen corresponding path program 1 times [2022-11-18 19:57:05,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:57:05,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981107676] [2022-11-18 19:57:05,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:57:05,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:57:05,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:05,841 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-18 19:57:05,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:57:05,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981107676] [2022-11-18 19:57:05,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981107676] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:57:05,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499940321] [2022-11-18 19:57:05,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:57:05,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:57:05,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b813f8c-22b1-4c13-8a9d-26d51f4cf269/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:57:05,844 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b813f8c-22b1-4c13-8a9d-26d51f4cf269/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:57:05,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b813f8c-22b1-4c13-8a9d-26d51f4cf269/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 19:57:05,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:05,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:57:06,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:57:06,074 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-18 19:57:06,075 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:57:06,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1499940321] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:57:06,075 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:57:06,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 19:57:06,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240761184] [2022-11-18 19:57:06,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:57:06,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:57:06,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:57:06,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:57:06,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:57:06,079 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 298 out of 332 [2022-11-18 19:57:06,081 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 335 transitions, 1131 flow. Second operand has 6 states, 6 states have (on average 300.8333333333333) internal successors, (1805), 6 states have internal predecessors, (1805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:06,082 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:57:06,082 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 298 of 332 [2022-11-18 19:57:06,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:57:09,428 INFO L130 PetriNetUnfolder]: 699/11926 cut-off events. [2022-11-18 19:57:09,428 INFO L131 PetriNetUnfolder]: For 2836/2853 co-relation queries the response was YES. [2022-11-18 19:57:09,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19212 conditions, 11926 events. 699/11926 cut-off events. For 2836/2853 co-relation queries the response was YES. Maximal size of possible extension queue 523. Compared 152216 event pairs, 51 based on Foata normal form. 72/11356 useless extension candidates. Maximal degree in co-relation 19168. Up to 697 conditions per place. [2022-11-18 19:57:09,544 INFO L137 encePairwiseOnDemand]: 325/332 looper letters, 24 selfloop transitions, 13 changer transitions 0/340 dead transitions. [2022-11-18 19:57:09,544 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 340 transitions, 1203 flow [2022-11-18 19:57:09,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:57:09,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 19:57:09,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2115 transitions. [2022-11-18 19:57:09,548 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9100688468158348 [2022-11-18 19:57:09,548 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2115 transitions. [2022-11-18 19:57:09,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2115 transitions. [2022-11-18 19:57:09,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:57:09,549 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2115 transitions. [2022-11-18 19:57:09,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 302.14285714285717) internal successors, (2115), 7 states have internal predecessors, (2115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:09,553 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 332.0) internal successors, (2656), 8 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:09,554 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 332.0) internal successors, (2656), 8 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:09,554 INFO L175 Difference]: Start difference. First operand has 404 places, 335 transitions, 1131 flow. Second operand 7 states and 2115 transitions. [2022-11-18 19:57:09,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 340 transitions, 1203 flow [2022-11-18 19:57:09,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 340 transitions, 1167 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-11-18 19:57:09,606 INFO L231 Difference]: Finished difference. Result has 400 places, 331 transitions, 1094 flow [2022-11-18 19:57:09,607 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=1068, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1094, PETRI_PLACES=400, PETRI_TRANSITIONS=331} [2022-11-18 19:57:09,608 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 103 predicate places. [2022-11-18 19:57:09,608 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 331 transitions, 1094 flow [2022-11-18 19:57:09,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 300.8333333333333) internal successors, (1805), 6 states have internal predecessors, (1805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:09,608 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:57:09,608 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:57:09,616 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b813f8c-22b1-4c13-8a9d-26d51f4cf269/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 19:57:09,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b813f8c-22b1-4c13-8a9d-26d51f4cf269/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-18 19:57:09,816 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-18 19:57:09,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:57:09,817 INFO L85 PathProgramCache]: Analyzing trace with hash 156945189, now seen corresponding path program 1 times [2022-11-18 19:57:09,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:57:09,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718296452] [2022-11-18 19:57:09,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:57:09,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:57:09,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:10,041 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-18 19:57:10,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:57:10,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718296452] [2022-11-18 19:57:10,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718296452] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:57:10,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216428977] [2022-11-18 19:57:10,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:57:10,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:57:10,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b813f8c-22b1-4c13-8a9d-26d51f4cf269/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:57:10,044 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b813f8c-22b1-4c13-8a9d-26d51f4cf269/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:57:10,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b813f8c-22b1-4c13-8a9d-26d51f4cf269/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 19:57:10,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:10,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 19:57:10,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:57:10,325 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-18 19:57:10,325 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:57:10,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1216428977] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:57:10,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:57:10,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 12 [2022-11-18 19:57:10,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279850289] [2022-11-18 19:57:10,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:57:10,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:57:10,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:57:10,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:57:10,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-18 19:57:10,329 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 332 [2022-11-18 19:57:10,330 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 331 transitions, 1094 flow. Second operand has 6 states, 6 states have (on average 272.6666666666667) internal successors, (1636), 6 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:10,330 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:57:10,330 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 332 [2022-11-18 19:57:10,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:57:11,934 INFO L130 PetriNetUnfolder]: 271/3373 cut-off events. [2022-11-18 19:57:11,934 INFO L131 PetriNetUnfolder]: For 501/501 co-relation queries the response was YES. [2022-11-18 19:57:12,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6007 conditions, 3373 events. 271/3373 cut-off events. For 501/501 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 28626 event pairs, 198 based on Foata normal form. 8/3355 useless extension candidates. Maximal degree in co-relation 5964. Up to 602 conditions per place. [2022-11-18 19:57:12,004 INFO L137 encePairwiseOnDemand]: 325/332 looper letters, 58 selfloop transitions, 6 changer transitions 0/345 dead transitions. [2022-11-18 19:57:12,004 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 345 transitions, 1261 flow [2022-11-18 19:57:12,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 19:57:12,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 19:57:12,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2203 transitions. [2022-11-18 19:57:12,007 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8294427710843374 [2022-11-18 19:57:12,007 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2203 transitions. [2022-11-18 19:57:12,007 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2203 transitions. [2022-11-18 19:57:12,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:57:12,008 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2203 transitions. [2022-11-18 19:57:12,011 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 275.375) internal successors, (2203), 8 states have internal predecessors, (2203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:12,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 332.0) internal successors, (2988), 9 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:12,014 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 332.0) internal successors, (2988), 9 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:12,014 INFO L175 Difference]: Start difference. First operand has 400 places, 331 transitions, 1094 flow. Second operand 8 states and 2203 transitions. [2022-11-18 19:57:12,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 345 transitions, 1261 flow [2022-11-18 19:57:12,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 345 transitions, 1241 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-18 19:57:12,029 INFO L231 Difference]: Finished difference. Result has 403 places, 333 transitions, 1100 flow [2022-11-18 19:57:12,029 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=1070, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1100, PETRI_PLACES=403, PETRI_TRANSITIONS=333} [2022-11-18 19:57:12,030 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 106 predicate places. [2022-11-18 19:57:12,031 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 333 transitions, 1100 flow [2022-11-18 19:57:12,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 272.6666666666667) internal successors, (1636), 6 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:12,031 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:57:12,031 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:57:12,042 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b813f8c-22b1-4c13-8a9d-26d51f4cf269/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-18 19:57:12,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b813f8c-22b1-4c13-8a9d-26d51f4cf269/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-18 19:57:12,238 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-18 19:57:12,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:57:12,238 INFO L85 PathProgramCache]: Analyzing trace with hash 383004182, now seen corresponding path program 1 times [2022-11-18 19:57:12,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:57:12,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348650760] [2022-11-18 19:57:12,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:57:12,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:57:12,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:12,482 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-18 19:57:12,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:57:12,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348650760] [2022-11-18 19:57:12,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348650760] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:57:12,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47865457] [2022-11-18 19:57:12,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:57:12,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:57:12,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b813f8c-22b1-4c13-8a9d-26d51f4cf269/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:57:12,485 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b813f8c-22b1-4c13-8a9d-26d51f4cf269/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:57:12,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b813f8c-22b1-4c13-8a9d-26d51f4cf269/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 19:57:12,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:12,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 19:57:12,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:57:12,948 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-18 19:57:12,949 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:57:12,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [47865457] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:57:12,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:57:12,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 12 [2022-11-18 19:57:12,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915890131] [2022-11-18 19:57:12,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:57:12,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:57:12,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:57:12,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:57:12,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-18 19:57:12,953 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 332 [2022-11-18 19:57:12,955 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 333 transitions, 1100 flow. Second operand has 6 states, 6 states have (on average 272.8333333333333) internal successors, (1637), 6 states have internal predecessors, (1637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:12,955 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:57:12,956 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 332 [2022-11-18 19:57:12,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:57:14,583 INFO L130 PetriNetUnfolder]: 255/3349 cut-off events. [2022-11-18 19:57:14,583 INFO L131 PetriNetUnfolder]: For 563/563 co-relation queries the response was YES. [2022-11-18 19:57:14,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6018 conditions, 3349 events. 255/3349 cut-off events. For 563/563 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 28305 event pairs, 170 based on Foata normal form. 8/3331 useless extension candidates. Maximal degree in co-relation 5973. Up to 518 conditions per place. [2022-11-18 19:57:14,661 INFO L137 encePairwiseOnDemand]: 323/332 looper letters, 63 selfloop transitions, 8 changer transitions 0/352 dead transitions. [2022-11-18 19:57:14,661 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 410 places, 352 transitions, 1307 flow [2022-11-18 19:57:14,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:57:14,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 19:57:14,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2475 transitions. [2022-11-18 19:57:14,664 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8283132530120482 [2022-11-18 19:57:14,664 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2475 transitions. [2022-11-18 19:57:14,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2475 transitions. [2022-11-18 19:57:14,664 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:57:14,664 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2475 transitions. [2022-11-18 19:57:14,667 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 275.0) internal successors, (2475), 9 states have internal predecessors, (2475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:14,670 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 332.0) internal successors, (3320), 10 states have internal predecessors, (3320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:14,671 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 332.0) internal successors, (3320), 10 states have internal predecessors, (3320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:14,671 INFO L175 Difference]: Start difference. First operand has 403 places, 333 transitions, 1100 flow. Second operand 9 states and 2475 transitions. [2022-11-18 19:57:14,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 410 places, 352 transitions, 1307 flow [2022-11-18 19:57:14,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 352 transitions, 1295 flow, removed 1 selfloop flow, removed 3 redundant places. [2022-11-18 19:57:14,682 INFO L231 Difference]: Finished difference. Result has 412 places, 337 transitions, 1134 flow [2022-11-18 19:57:14,683 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=1086, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1134, PETRI_PLACES=412, PETRI_TRANSITIONS=337} [2022-11-18 19:57:14,683 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 115 predicate places. [2022-11-18 19:57:14,683 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 337 transitions, 1134 flow [2022-11-18 19:57:14,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 272.8333333333333) internal successors, (1637), 6 states have internal predecessors, (1637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:14,684 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:57:14,684 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:57:14,689 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b813f8c-22b1-4c13-8a9d-26d51f4cf269/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-18 19:57:14,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b813f8c-22b1-4c13-8a9d-26d51f4cf269/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:57:14,886 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-18 19:57:14,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:57:14,886 INFO L85 PathProgramCache]: Analyzing trace with hash 413209171, now seen corresponding path program 1 times [2022-11-18 19:57:14,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:57:14,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201874296] [2022-11-18 19:57:14,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:57:14,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:57:14,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:15,103 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-18 19:57:15,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:57:15,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201874296] [2022-11-18 19:57:15,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201874296] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:57:15,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337627251] [2022-11-18 19:57:15,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:57:15,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:57:15,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b813f8c-22b1-4c13-8a9d-26d51f4cf269/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:57:15,106 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b813f8c-22b1-4c13-8a9d-26d51f4cf269/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:57:15,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b813f8c-22b1-4c13-8a9d-26d51f4cf269/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-18 19:57:15,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:15,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 19:57:15,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:57:15,443 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-18 19:57:15,443 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:57:15,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337627251] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:57:15,444 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:57:15,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 12 [2022-11-18 19:57:15,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733918243] [2022-11-18 19:57:15,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:57:15,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:57:15,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:57:15,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:57:15,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-18 19:57:15,447 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 332 [2022-11-18 19:57:15,448 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 337 transitions, 1134 flow. Second operand has 6 states, 6 states have (on average 272.8333333333333) internal successors, (1637), 6 states have internal predecessors, (1637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:15,449 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:57:15,449 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 332 [2022-11-18 19:57:15,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:57:20,975 INFO L130 PetriNetUnfolder]: 4541/15637 cut-off events. [2022-11-18 19:57:20,975 INFO L131 PetriNetUnfolder]: For 6643/6677 co-relation queries the response was YES. [2022-11-18 19:57:21,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30568 conditions, 15637 events. 4541/15637 cut-off events. For 6643/6677 co-relation queries the response was YES. Maximal size of possible extension queue 3830. Compared 261306 event pairs, 3366 based on Foata normal form. 89/11467 useless extension candidates. Maximal degree in co-relation 30519. Up to 6950 conditions per place. [2022-11-18 19:57:21,155 INFO L137 encePairwiseOnDemand]: 325/332 looper letters, 51 selfloop transitions, 6 changer transitions 5/349 dead transitions. [2022-11-18 19:57:21,155 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 349 transitions, 1291 flow [2022-11-18 19:57:21,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 19:57:21,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 19:57:21,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2201 transitions. [2022-11-18 19:57:21,158 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8286897590361446 [2022-11-18 19:57:21,158 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2201 transitions. [2022-11-18 19:57:21,158 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2201 transitions. [2022-11-18 19:57:21,158 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:57:21,159 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2201 transitions. [2022-11-18 19:57:21,161 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 275.125) internal successors, (2201), 8 states have internal predecessors, (2201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:21,164 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 332.0) internal successors, (2988), 9 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:21,164 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 332.0) internal successors, (2988), 9 states have internal predecessors, (2988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:21,164 INFO L175 Difference]: Start difference. First operand has 412 places, 337 transitions, 1134 flow. Second operand 8 states and 2201 transitions. [2022-11-18 19:57:21,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 349 transitions, 1291 flow [2022-11-18 19:57:21,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 349 transitions, 1279 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-11-18 19:57:21,218 INFO L231 Difference]: Finished difference. Result has 418 places, 339 transitions, 1148 flow [2022-11-18 19:57:21,219 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=1118, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1148, PETRI_PLACES=418, PETRI_TRANSITIONS=339} [2022-11-18 19:57:21,219 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 121 predicate places. [2022-11-18 19:57:21,219 INFO L495 AbstractCegarLoop]: Abstraction has has 418 places, 339 transitions, 1148 flow [2022-11-18 19:57:21,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 272.8333333333333) internal successors, (1637), 6 states have internal predecessors, (1637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:21,220 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:57:21,220 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:57:21,226 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b813f8c-22b1-4c13-8a9d-26d51f4cf269/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-11-18 19:57:21,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b813f8c-22b1-4c13-8a9d-26d51f4cf269/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2022-11-18 19:57:21,426 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-18 19:57:21,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:57:21,426 INFO L85 PathProgramCache]: Analyzing trace with hash -262746872, now seen corresponding path program 1 times [2022-11-18 19:57:21,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:57:21,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760911236] [2022-11-18 19:57:21,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:57:21,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:57:21,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:21,637 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-18 19:57:21,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:57:21,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760911236] [2022-11-18 19:57:21,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760911236] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:57:21,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855861216] [2022-11-18 19:57:21,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:57:21,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:57:21,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b813f8c-22b1-4c13-8a9d-26d51f4cf269/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:57:21,640 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b813f8c-22b1-4c13-8a9d-26d51f4cf269/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:57:21,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b813f8c-22b1-4c13-8a9d-26d51f4cf269/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-18 19:57:21,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:21,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 19:57:21,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:57:21,944 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-18 19:57:21,944 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:57:21,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [855861216] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:57:21,945 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:57:21,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 12 [2022-11-18 19:57:21,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201304353] [2022-11-18 19:57:21,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:57:21,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:57:21,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:57:21,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:57:21,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-18 19:57:21,948 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 332 [2022-11-18 19:57:21,959 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 339 transitions, 1148 flow. Second operand has 6 states, 6 states have (on average 273.0) internal successors, (1638), 6 states have internal predecessors, (1638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:21,959 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:57:21,959 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 332 [2022-11-18 19:57:21,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:57:27,357 INFO L130 PetriNetUnfolder]: 4269/15293 cut-off events. [2022-11-18 19:57:27,357 INFO L131 PetriNetUnfolder]: For 7195/7229 co-relation queries the response was YES. [2022-11-18 19:57:27,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30726 conditions, 15293 events. 4269/15293 cut-off events. For 7195/7229 co-relation queries the response was YES. Maximal size of possible extension queue 3570. Compared 253465 event pairs, 2890 based on Foata normal form. 89/11397 useless extension candidates. Maximal degree in co-relation 30675. Up to 5970 conditions per place. [2022-11-18 19:57:27,537 INFO L137 encePairwiseOnDemand]: 323/332 looper letters, 55 selfloop transitions, 8 changer transitions 7/357 dead transitions. [2022-11-18 19:57:27,537 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 357 transitions, 1350 flow [2022-11-18 19:57:27,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:57:27,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 19:57:27,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2474 transitions. [2022-11-18 19:57:27,540 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8279785809906292 [2022-11-18 19:57:27,540 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2474 transitions. [2022-11-18 19:57:27,540 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2474 transitions. [2022-11-18 19:57:27,541 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:57:27,541 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2474 transitions. [2022-11-18 19:57:27,544 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 274.8888888888889) internal successors, (2474), 9 states have internal predecessors, (2474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:27,547 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 332.0) internal successors, (3320), 10 states have internal predecessors, (3320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:27,547 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 332.0) internal successors, (3320), 10 states have internal predecessors, (3320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:27,548 INFO L175 Difference]: Start difference. First operand has 418 places, 339 transitions, 1148 flow. Second operand 9 states and 2474 transitions. [2022-11-18 19:57:27,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 357 transitions, 1350 flow [2022-11-18 19:57:27,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 357 transitions, 1338 flow, removed 1 selfloop flow, removed 3 redundant places. [2022-11-18 19:57:27,619 INFO L231 Difference]: Finished difference. Result has 427 places, 343 transitions, 1182 flow [2022-11-18 19:57:27,620 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=1134, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1182, PETRI_PLACES=427, PETRI_TRANSITIONS=343} [2022-11-18 19:57:27,620 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 130 predicate places. [2022-11-18 19:57:27,620 INFO L495 AbstractCegarLoop]: Abstraction has has 427 places, 343 transitions, 1182 flow [2022-11-18 19:57:27,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 273.0) internal successors, (1638), 6 states have internal predecessors, (1638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:27,621 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:57:27,621 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:57:27,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b813f8c-22b1-4c13-8a9d-26d51f4cf269/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-18 19:57:27,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b813f8c-22b1-4c13-8a9d-26d51f4cf269/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:57:27,827 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-18 19:57:27,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:57:27,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1809336150, now seen corresponding path program 2 times [2022-11-18 19:57:27,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:57:27,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111553384] [2022-11-18 19:57:27,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:57:27,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:57:27,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:28,109 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 0 proven. 188 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-18 19:57:28,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:57:28,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111553384] [2022-11-18 19:57:28,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111553384] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:57:28,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680522668] [2022-11-18 19:57:28,110 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:57:28,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:57:28,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b813f8c-22b1-4c13-8a9d-26d51f4cf269/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:57:28,111 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b813f8c-22b1-4c13-8a9d-26d51f4cf269/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:57:28,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b813f8c-22b1-4c13-8a9d-26d51f4cf269/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-18 19:57:28,252 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 19:57:28,252 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:57:28,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 19:57:28,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:57:28,331 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2022-11-18 19:57:28,331 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:57:28,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680522668] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:57:28,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:57:28,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 13 [2022-11-18 19:57:28,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262010256] [2022-11-18 19:57:28,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:57:28,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:57:28,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:57:28,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:57:28,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2022-11-18 19:57:28,335 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 332 [2022-11-18 19:57:28,336 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 343 transitions, 1182 flow. Second operand has 6 states, 6 states have (on average 283.5) internal successors, (1701), 6 states have internal predecessors, (1701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:28,336 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:57:28,337 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 332 [2022-11-18 19:57:28,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:57:29,591 INFO L130 PetriNetUnfolder]: 182/2094 cut-off events. [2022-11-18 19:57:29,591 INFO L131 PetriNetUnfolder]: For 480/480 co-relation queries the response was YES. [2022-11-18 19:57:29,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4077 conditions, 2094 events. 182/2094 cut-off events. For 480/480 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 14792 event pairs, 100 based on Foata normal form. 2/2081 useless extension candidates. Maximal degree in co-relation 4022. Up to 320 conditions per place. [2022-11-18 19:57:29,673 INFO L137 encePairwiseOnDemand]: 317/332 looper letters, 44 selfloop transitions, 27 changer transitions 0/356 dead transitions. [2022-11-18 19:57:29,673 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 435 places, 356 transitions, 1351 flow [2022-11-18 19:57:29,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 19:57:29,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-18 19:57:29,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2852 transitions. [2022-11-18 19:57:29,683 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8590361445783132 [2022-11-18 19:57:29,683 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2852 transitions. [2022-11-18 19:57:29,683 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2852 transitions. [2022-11-18 19:57:29,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:57:29,684 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2852 transitions. [2022-11-18 19:57:29,687 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 285.2) internal successors, (2852), 10 states have internal predecessors, (2852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:29,690 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 332.0) internal successors, (3652), 11 states have internal predecessors, (3652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:29,691 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 332.0) internal successors, (3652), 11 states have internal predecessors, (3652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:29,691 INFO L175 Difference]: Start difference. First operand has 427 places, 343 transitions, 1182 flow. Second operand 10 states and 2852 transitions. [2022-11-18 19:57:29,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 435 places, 356 transitions, 1351 flow [2022-11-18 19:57:29,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 356 transitions, 1333 flow, removed 2 selfloop flow, removed 6 redundant places. [2022-11-18 19:57:29,706 INFO L231 Difference]: Finished difference. Result has 430 places, 345 transitions, 1218 flow [2022-11-18 19:57:29,706 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=1154, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1218, PETRI_PLACES=430, PETRI_TRANSITIONS=345} [2022-11-18 19:57:29,707 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 133 predicate places. [2022-11-18 19:57:29,707 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 345 transitions, 1218 flow [2022-11-18 19:57:29,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 283.5) internal successors, (1701), 6 states have internal predecessors, (1701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:29,707 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:57:29,708 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:57:29,718 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b813f8c-22b1-4c13-8a9d-26d51f4cf269/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-18 19:57:29,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b813f8c-22b1-4c13-8a9d-26d51f4cf269/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-11-18 19:57:29,913 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 35 more)] === [2022-11-18 19:57:29,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:57:29,913 INFO L85 PathProgramCache]: Analyzing trace with hash 372914308, now seen corresponding path program 2 times [2022-11-18 19:57:29,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:57:29,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135201340] [2022-11-18 19:57:29,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:57:29,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:57:29,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:30,387 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 0 proven. 188 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-18 19:57:30,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:57:30,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135201340] [2022-11-18 19:57:30,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135201340] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:57:30,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461225760] [2022-11-18 19:57:30,388 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:57:30,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:57:30,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b813f8c-22b1-4c13-8a9d-26d51f4cf269/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:57:30,390 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b813f8c-22b1-4c13-8a9d-26d51f4cf269/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:57:30,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b813f8c-22b1-4c13-8a9d-26d51f4cf269/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-18 19:57:30,542 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 19:57:30,542 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:57:30,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 19:57:30,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:57:30,629 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2022-11-18 19:57:30,630 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:57:30,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [461225760] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:57:30,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:57:30,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 13 [2022-11-18 19:57:30,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118508756] [2022-11-18 19:57:30,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:57:30,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:57:30,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:57:30,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:57:30,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2022-11-18 19:57:30,634 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 332 [2022-11-18 19:57:30,636 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 345 transitions, 1218 flow. Second operand has 6 states, 6 states have (on average 283.6666666666667) internal successors, (1702), 6 states have internal predecessors, (1702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:30,636 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:57:30,636 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 332 [2022-11-18 19:57:30,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:57:35,404 INFO L130 PetriNetUnfolder]: 3062/14305 cut-off events. [2022-11-18 19:57:35,404 INFO L131 PetriNetUnfolder]: For 6029/6046 co-relation queries the response was YES. [2022-11-18 19:57:35,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27900 conditions, 14305 events. 3062/14305 cut-off events. For 6029/6046 co-relation queries the response was YES. Maximal size of possible extension queue 2436. Compared 222538 event pairs, 221 based on Foata normal form. 18/11484 useless extension candidates. Maximal degree in co-relation 27848. Up to 3521 conditions per place. [2022-11-18 19:57:35,562 INFO L137 encePairwiseOnDemand]: 317/332 looper letters, 0 selfloop transitions, 0 changer transitions 357/357 dead transitions. [2022-11-18 19:57:35,562 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 357 transitions, 1382 flow [2022-11-18 19:57:35,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 19:57:35,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-18 19:57:35,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2851 transitions. [2022-11-18 19:57:35,565 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8587349397590361 [2022-11-18 19:57:35,566 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2851 transitions. [2022-11-18 19:57:35,566 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2851 transitions. [2022-11-18 19:57:35,566 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:57:35,566 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2851 transitions. [2022-11-18 19:57:35,568 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 285.1) internal successors, (2851), 10 states have internal predecessors, (2851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:35,570 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 332.0) internal successors, (3652), 11 states have internal predecessors, (3652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:35,571 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 332.0) internal successors, (3652), 11 states have internal predecessors, (3652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:35,571 INFO L175 Difference]: Start difference. First operand has 430 places, 345 transitions, 1218 flow. Second operand 10 states and 2851 transitions. [2022-11-18 19:57:35,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 357 transitions, 1382 flow [2022-11-18 19:57:35,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 357 transitions, 1347 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-18 19:57:35,635 INFO L231 Difference]: Finished difference. Result has 431 places, 0 transitions, 0 flow [2022-11-18 19:57:35,636 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=332, PETRI_DIFFERENCE_MINUEND_FLOW=1173, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=0, PETRI_PLACES=431, PETRI_TRANSITIONS=0} [2022-11-18 19:57:35,636 INFO L288 CegarLoopForPetriNet]: 297 programPoint places, 134 predicate places. [2022-11-18 19:57:35,636 INFO L495 AbstractCegarLoop]: Abstraction has has 431 places, 0 transitions, 0 flow [2022-11-18 19:57:35,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 283.6666666666667) internal successors, (1702), 6 states have internal predecessors, (1702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:35,638 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 38 remaining) [2022-11-18 19:57:35,639 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 38 remaining) [2022-11-18 19:57:35,639 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 38 remaining) [2022-11-18 19:57:35,639 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 38 remaining) [2022-11-18 19:57:35,639 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 38 remaining) [2022-11-18 19:57:35,639 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 38 remaining) [2022-11-18 19:57:35,639 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 38 remaining) [2022-11-18 19:57:35,639 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 38 remaining) [2022-11-18 19:57:35,639 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 38 remaining) [2022-11-18 19:57:35,640 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 38 remaining) [2022-11-18 19:57:35,640 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 38 remaining) [2022-11-18 19:57:35,640 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 38 remaining) [2022-11-18 19:57:35,640 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 38 remaining) [2022-11-18 19:57:35,640 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 38 remaining) [2022-11-18 19:57:35,640 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 38 remaining) [2022-11-18 19:57:35,640 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 38 remaining) [2022-11-18 19:57:35,640 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 38 remaining) [2022-11-18 19:57:35,640 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 38 remaining) [2022-11-18 19:57:35,640 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 38 remaining) [2022-11-18 19:57:35,641 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 38 remaining) [2022-11-18 19:57:35,641 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 38 remaining) [2022-11-18 19:57:35,641 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 38 remaining) [2022-11-18 19:57:35,641 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 38 remaining) [2022-11-18 19:57:35,641 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 38 remaining) [2022-11-18 19:57:35,641 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 38 remaining) [2022-11-18 19:57:35,641 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 38 remaining) [2022-11-18 19:57:35,641 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 38 remaining) [2022-11-18 19:57:35,642 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 38 remaining) [2022-11-18 19:57:35,642 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 38 remaining) [2022-11-18 19:57:35,642 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 38 remaining) [2022-11-18 19:57:35,642 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 38 remaining) [2022-11-18 19:57:35,642 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 38 remaining) [2022-11-18 19:57:35,642 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 38 remaining) [2022-11-18 19:57:35,643 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 38 remaining) [2022-11-18 19:57:35,643 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 38 remaining) [2022-11-18 19:57:35,643 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 38 remaining) [2022-11-18 19:57:35,643 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 38 remaining) [2022-11-18 19:57:35,643 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 38 remaining) [2022-11-18 19:57:35,649 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b813f8c-22b1-4c13-8a9d-26d51f4cf269/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-18 19:57:35,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b813f8c-22b1-4c13-8a9d-26d51f4cf269/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-11-18 19:57:35,847 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:57:35,853 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-18 19:57:35,855 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-18 19:57:35,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 07:57:35 BasicIcfg [2022-11-18 19:57:35,861 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-18 19:57:35,862 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-18 19:57:35,862 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-18 19:57:35,862 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-18 19:57:35,863 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:56:29" (3/4) ... [2022-11-18 19:57:35,866 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-18 19:57:35,872 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-18 19:57:35,872 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-18 19:57:35,879 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2022-11-18 19:57:35,880 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-18 19:57:35,880 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-18 19:57:35,880 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-18 19:57:35,937 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b813f8c-22b1-4c13-8a9d-26d51f4cf269/bin/uautomizer-TMbwUNV5ro/witness.graphml [2022-11-18 19:57:35,938 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-18 19:57:35,939 INFO L158 Benchmark]: Toolchain (without parser) took 68113.46ms. Allocated memory was 104.9MB in the beginning and 11.4GB in the end (delta: 11.3GB). Free memory was 64.6MB in the beginning and 9.5GB in the end (delta: -9.5GB). Peak memory consumption was 1.9GB. Max. memory is 16.1GB. [2022-11-18 19:57:35,939 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 104.9MB. Free memory was 81.5MB in the beginning and 81.4MB in the end (delta: 92.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 19:57:35,939 INFO L158 Benchmark]: CACSL2BoogieTranslator took 351.75ms. Allocated memory is still 104.9MB. Free memory was 64.4MB in the beginning and 77.3MB in the end (delta: -12.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-18 19:57:35,940 INFO L158 Benchmark]: Boogie Procedure Inliner took 73.99ms. Allocated memory is still 104.9MB. Free memory was 77.3MB in the beginning and 74.9MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 19:57:35,944 INFO L158 Benchmark]: Boogie Preprocessor took 63.86ms. Allocated memory is still 104.9MB. Free memory was 74.4MB in the beginning and 72.8MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 19:57:35,944 INFO L158 Benchmark]: RCFGBuilder took 918.04ms. Allocated memory is still 104.9MB. Free memory was 72.8MB in the beginning and 48.4MB in the end (delta: 24.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2022-11-18 19:57:35,945 INFO L158 Benchmark]: TraceAbstraction took 66620.07ms. Allocated memory was 104.9MB in the beginning and 11.4GB in the end (delta: 11.3GB). Free memory was 47.6MB in the beginning and 9.6GB in the end (delta: -9.5GB). Peak memory consumption was 2.3GB. Max. memory is 16.1GB. [2022-11-18 19:57:35,945 INFO L158 Benchmark]: Witness Printer took 75.91ms. Allocated memory is still 11.4GB. Free memory was 9.6GB in the beginning and 9.5GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-18 19:57:35,947 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 104.9MB. Free memory was 81.5MB in the beginning and 81.4MB in the end (delta: 92.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 351.75ms. Allocated memory is still 104.9MB. Free memory was 64.4MB in the beginning and 77.3MB in the end (delta: -12.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 73.99ms. Allocated memory is still 104.9MB. Free memory was 77.3MB in the beginning and 74.9MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 63.86ms. Allocated memory is still 104.9MB. Free memory was 74.4MB in the beginning and 72.8MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 918.04ms. Allocated memory is still 104.9MB. Free memory was 72.8MB in the beginning and 48.4MB in the end (delta: 24.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 66620.07ms. Allocated memory was 104.9MB in the beginning and 11.4GB in the end (delta: 11.3GB). Free memory was 47.6MB in the beginning and 9.6GB in the end (delta: -9.5GB). Peak memory consumption was 2.3GB. Max. memory is 16.1GB. * Witness Printer took 75.91ms. Allocated memory is still 11.4GB. Free memory was 9.6GB in the beginning and 9.5GB 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: - PositiveResult [Line: 130]: 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: 130]: 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: 131]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 131]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 132]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 132]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 130]: 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: 130]: 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: 131]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 131]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 132]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 132]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 123]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 123]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 112]: 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 5 procedures, 488 locations, 38 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: 66.3s, OverallIterations: 34, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 52.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1771 SdHoareTripleChecker+Valid, 3.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1771 mSDsluCounter, 1124 SdHoareTripleChecker+Invalid, 2.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 680 mSDsCounter, 115 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3185 IncrementalHoareTripleChecker+Invalid, 3300 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 115 mSolverCounterUnsat, 444 mSDtfsCounter, 3185 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3164 GetRequests, 2823 SyntacticMatches, 3 SemanticMatches, 338 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 679 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1218occurred in iteration=33, InterpolantAutomatonStates: 273, 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: 0.4s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 7.2s InterpolantComputationTime, 7245 NumberOfCodeBlocks, 6995 NumberOfCodeBlocksAsserted, 48 NumberOfCheckSat, 7837 ConstructedInterpolants, 0 QuantifiedInterpolants, 14153 SizeOfPredicates, 47 NumberOfNonLiveVariables, 3869 ConjunctsInSsa, 83 ConjunctsInUnsatCore, 53 InterpolantComputations, 29 PerfectInterpolantSequences, 1770/2373 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 20 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-18 19:57:35,982 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b813f8c-22b1-4c13-8a9d-26d51f4cf269/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE