./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-word-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7865cfd-0ad8-4ac7-b03a-c2aae245a334/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7865cfd-0ad8-4ac7-b03a-c2aae245a334/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7865cfd-0ad8-4ac7-b03a-c2aae245a334/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7865cfd-0ad8-4ac7-b03a-c2aae245a334/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-word-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7865cfd-0ad8-4ac7-b03a-c2aae245a334/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7865cfd-0ad8-4ac7-b03a-c2aae245a334/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4ca4c99e545bc332635ee8b9969d24118d6fd539f8535aa6ae4c72d296ec330e --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 22:15:05,608 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 22:15:05,610 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 22:15:05,628 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 22:15:05,629 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 22:15:05,630 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 22:15:05,631 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 22:15:05,633 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 22:15:05,634 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 22:15:05,635 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 22:15:05,636 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 22:15:05,637 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 22:15:05,637 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 22:15:05,638 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 22:15:05,639 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 22:15:05,640 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 22:15:05,641 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 22:15:05,642 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 22:15:05,644 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 22:15:05,645 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 22:15:05,647 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 22:15:05,648 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 22:15:05,649 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 22:15:05,650 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 22:15:05,654 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 22:15:05,654 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 22:15:05,654 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 22:15:05,655 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 22:15:05,656 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 22:15:05,657 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 22:15:05,657 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 22:15:05,658 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 22:15:05,659 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 22:15:05,660 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 22:15:05,661 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 22:15:05,661 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 22:15:05,661 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 22:15:05,662 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 22:15:05,662 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 22:15:05,663 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 22:15:05,663 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 22:15:05,664 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7865cfd-0ad8-4ac7-b03a-c2aae245a334/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-12-13 22:15:05,685 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 22:15:05,685 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 22:15:05,686 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 22:15:05,686 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 22:15:05,687 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 22:15:05,687 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 22:15:05,687 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 22:15:05,688 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 22:15:05,688 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 22:15:05,688 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 22:15:05,688 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 22:15:05,688 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 22:15:05,689 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 22:15:05,689 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 22:15:05,689 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 22:15:05,689 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 22:15:05,689 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 22:15:05,690 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 22:15:05,690 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 22:15:05,690 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 22:15:05,690 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 22:15:05,690 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 22:15:05,691 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 22:15:05,691 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 22:15:05,691 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 22:15:05,691 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 22:15:05,691 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 22:15:05,692 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 22:15:05,692 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 22:15:05,692 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 22:15:05,692 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 22:15:05,692 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 22:15:05,693 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 22:15:05,693 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 22:15:05,693 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 22:15:05,693 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 22:15:05,693 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 22:15:05,693 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7865cfd-0ad8-4ac7-b03a-c2aae245a334/bin/uautomizer-uyxdKDjOR8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7865cfd-0ad8-4ac7-b03a-c2aae245a334/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ca4c99e545bc332635ee8b9969d24118d6fd539f8535aa6ae4c72d296ec330e [2022-12-13 22:15:05,870 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 22:15:05,888 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 22:15:05,889 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 22:15:05,890 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 22:15:05,890 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 22:15:05,891 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7865cfd-0ad8-4ac7-b03a-c2aae245a334/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/weaver/chl-word-symm.wvr.c [2022-12-13 22:15:08,448 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 22:15:08,600 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 22:15:08,600 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7865cfd-0ad8-4ac7-b03a-c2aae245a334/sv-benchmarks/c/weaver/chl-word-symm.wvr.c [2022-12-13 22:15:08,605 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7865cfd-0ad8-4ac7-b03a-c2aae245a334/bin/uautomizer-uyxdKDjOR8/data/86654e74a/a69d26f2d8354d7fa0bf141136827c16/FLAGaa8c24a7e [2022-12-13 22:15:09,022 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7865cfd-0ad8-4ac7-b03a-c2aae245a334/bin/uautomizer-uyxdKDjOR8/data/86654e74a/a69d26f2d8354d7fa0bf141136827c16 [2022-12-13 22:15:09,024 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 22:15:09,025 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 22:15:09,026 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 22:15:09,026 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 22:15:09,029 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 22:15:09,030 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 10:15:09" (1/1) ... [2022-12-13 22:15:09,030 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ed17486 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:15:09, skipping insertion in model container [2022-12-13 22:15:09,031 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 10:15:09" (1/1) ... [2022-12-13 22:15:09,036 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 22:15:09,051 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 22:15:09,175 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7865cfd-0ad8-4ac7-b03a-c2aae245a334/sv-benchmarks/c/weaver/chl-word-symm.wvr.c[2848,2861] [2022-12-13 22:15:09,178 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 22:15:09,185 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 22:15:09,201 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7865cfd-0ad8-4ac7-b03a-c2aae245a334/sv-benchmarks/c/weaver/chl-word-symm.wvr.c[2848,2861] [2022-12-13 22:15:09,203 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 22:15:09,213 INFO L208 MainTranslator]: Completed translation [2022-12-13 22:15:09,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:15:09 WrapperNode [2022-12-13 22:15:09,214 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 22:15:09,214 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 22:15:09,214 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 22:15:09,215 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 22:15:09,219 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:15:09" (1/1) ... [2022-12-13 22:15:09,225 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:15:09" (1/1) ... [2022-12-13 22:15:09,241 INFO L138 Inliner]: procedures = 24, calls = 35, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 132 [2022-12-13 22:15:09,241 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 22:15:09,242 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 22:15:09,242 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 22:15:09,242 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 22:15:09,249 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:15:09" (1/1) ... [2022-12-13 22:15:09,250 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:15:09" (1/1) ... [2022-12-13 22:15:09,252 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:15:09" (1/1) ... [2022-12-13 22:15:09,253 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:15:09" (1/1) ... [2022-12-13 22:15:09,260 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:15:09" (1/1) ... [2022-12-13 22:15:09,264 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:15:09" (1/1) ... [2022-12-13 22:15:09,266 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:15:09" (1/1) ... [2022-12-13 22:15:09,267 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:15:09" (1/1) ... [2022-12-13 22:15:09,270 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 22:15:09,271 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 22:15:09,271 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 22:15:09,272 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 22:15:09,272 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:15:09" (1/1) ... [2022-12-13 22:15:09,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 22:15:09,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7865cfd-0ad8-4ac7-b03a-c2aae245a334/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:15:09,300 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7865cfd-0ad8-4ac7-b03a-c2aae245a334/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 22:15:09,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7865cfd-0ad8-4ac7-b03a-c2aae245a334/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 22:15:09,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 22:15:09,327 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-13 22:15:09,327 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-13 22:15:09,327 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-13 22:15:09,327 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-13 22:15:09,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 22:15:09,327 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 22:15:09,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 22:15:09,328 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 22:15:09,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 22:15:09,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 22:15:09,328 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 22:15:09,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 22:15:09,329 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 22:15:09,419 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 22:15:09,421 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 22:15:09,699 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 22:15:09,706 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 22:15:09,706 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-13 22:15:09,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:15:09 BoogieIcfgContainer [2022-12-13 22:15:09,708 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 22:15:09,710 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 22:15:09,710 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 22:15:09,713 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 22:15:09,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 10:15:09" (1/3) ... [2022-12-13 22:15:09,713 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cc9a8fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 10:15:09, skipping insertion in model container [2022-12-13 22:15:09,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:15:09" (2/3) ... [2022-12-13 22:15:09,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cc9a8fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 10:15:09, skipping insertion in model container [2022-12-13 22:15:09,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:15:09" (3/3) ... [2022-12-13 22:15:09,715 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-word-symm.wvr.c [2022-12-13 22:15:09,721 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 22:15:09,728 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 22:15:09,729 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-12-13 22:15:09,729 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 22:15:09,802 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 22:15:09,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 235 places, 249 transitions, 514 flow [2022-12-13 22:15:09,908 INFO L130 PetriNetUnfolder]: 21/247 cut-off events. [2022-12-13 22:15:09,908 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-13 22:15:09,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 256 conditions, 247 events. 21/247 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 330 event pairs, 0 based on Foata normal form. 0/214 useless extension candidates. Maximal degree in co-relation 169. Up to 3 conditions per place. [2022-12-13 22:15:09,914 INFO L82 GeneralOperation]: Start removeDead. Operand has 235 places, 249 transitions, 514 flow [2022-12-13 22:15:09,919 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 201 places, 212 transitions, 433 flow [2022-12-13 22:15:09,923 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 22:15:09,934 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 201 places, 212 transitions, 433 flow [2022-12-13 22:15:09,937 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 201 places, 212 transitions, 433 flow [2022-12-13 22:15:09,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 201 places, 212 transitions, 433 flow [2022-12-13 22:15:09,982 INFO L130 PetriNetUnfolder]: 18/212 cut-off events. [2022-12-13 22:15:09,982 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 22:15:09,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 220 conditions, 212 events. 18/212 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 313 event pairs, 0 based on Foata normal form. 0/182 useless extension candidates. Maximal degree in co-relation 169. Up to 3 conditions per place. [2022-12-13 22:15:09,986 INFO L119 LiptonReduction]: Number of co-enabled transitions 4028 [2022-12-13 22:15:15,477 INFO L134 LiptonReduction]: Checked pairs total: 4947 [2022-12-13 22:15:15,478 INFO L136 LiptonReduction]: Total number of compositions: 237 [2022-12-13 22:15:15,490 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 22:15:15,495 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;@18063165, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 22:15:15,495 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-12-13 22:15:15,497 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-12-13 22:15:15,497 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 22:15:15,497 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:15:15,498 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-12-13 22:15:15,498 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 22:15:15,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:15:15,502 INFO L85 PathProgramCache]: Analyzing trace with hash 29746, now seen corresponding path program 1 times [2022-12-13 22:15:15,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:15:15,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269272075] [2022-12-13 22:15:15,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:15:15,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:15:15,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:15,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:15:15,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:15:15,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269272075] [2022-12-13 22:15:15,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269272075] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:15:15,710 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:15:15,711 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 22:15:15,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754413352] [2022-12-13 22:15:15,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:15:15,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 22:15:15,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:15:15,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 22:15:15,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 22:15:15,767 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 486 [2022-12-13 22:15:15,771 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 36 transitions, 81 flow. Second operand has 3 states, 3 states have (on average 227.66666666666666) internal successors, (683), 3 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:15:15,771 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:15:15,771 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 486 [2022-12-13 22:15:15,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:15:15,955 INFO L130 PetriNetUnfolder]: 651/1041 cut-off events. [2022-12-13 22:15:15,955 INFO L131 PetriNetUnfolder]: For 46/46 co-relation queries the response was YES. [2022-12-13 22:15:15,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2148 conditions, 1041 events. 651/1041 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4585 event pairs, 456 based on Foata normal form. 0/521 useless extension candidates. Maximal degree in co-relation 988. Up to 524 conditions per place. [2022-12-13 22:15:15,961 INFO L137 encePairwiseOnDemand]: 478/486 looper letters, 63 selfloop transitions, 4 changer transitions 0/67 dead transitions. [2022-12-13 22:15:15,961 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 67 transitions, 286 flow [2022-12-13 22:15:15,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 22:15:15,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 22:15:15,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 752 transitions. [2022-12-13 22:15:15,973 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5157750342935528 [2022-12-13 22:15:15,973 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 752 transitions. [2022-12-13 22:15:15,974 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 752 transitions. [2022-12-13 22:15:15,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:15:15,977 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 752 transitions. [2022-12-13 22:15:15,980 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 250.66666666666666) internal successors, (752), 3 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:15:15,986 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 486.0) internal successors, (1944), 4 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:15:15,986 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 486.0) internal successors, (1944), 4 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:15:15,988 INFO L175 Difference]: Start difference. First operand has 36 places, 36 transitions, 81 flow. Second operand 3 states and 752 transitions. [2022-12-13 22:15:15,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 67 transitions, 286 flow [2022-12-13 22:15:15,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 67 transitions, 276 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-13 22:15:15,993 INFO L231 Difference]: Finished difference. Result has 37 places, 39 transitions, 112 flow [2022-12-13 22:15:15,994 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=486, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=37, PETRI_TRANSITIONS=39} [2022-12-13 22:15:15,996 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 1 predicate places. [2022-12-13 22:15:15,997 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 39 transitions, 112 flow [2022-12-13 22:15:15,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 227.66666666666666) internal successors, (683), 3 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:15:15,997 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:15:15,997 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-13 22:15:15,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 22:15:15,998 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 22:15:15,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:15:15,998 INFO L85 PathProgramCache]: Analyzing trace with hash 924644, now seen corresponding path program 1 times [2022-12-13 22:15:15,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:15:15,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155503187] [2022-12-13 22:15:15,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:15:15,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:15:16,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:16,066 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:15:16,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:15:16,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155503187] [2022-12-13 22:15:16,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155503187] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:15:16,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [723278545] [2022-12-13 22:15:16,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:15:16,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:15:16,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7865cfd-0ad8-4ac7-b03a-c2aae245a334/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:15:16,068 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7865cfd-0ad8-4ac7-b03a-c2aae245a334/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:15:16,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7865cfd-0ad8-4ac7-b03a-c2aae245a334/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 22:15:16,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:16,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 22:15:16,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:15:16,151 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:15:16,151 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:15:16,165 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:15:16,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [723278545] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:15:16,166 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 22:15:16,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2022-12-13 22:15:16,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250566631] [2022-12-13 22:15:16,167 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 22:15:16,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 22:15:16,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:15:16,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 22:15:16,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 22:15:16,215 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 486 [2022-12-13 22:15:16,217 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 39 transitions, 112 flow. Second operand has 7 states, 7 states have (on average 228.14285714285714) internal successors, (1597), 7 states have internal predecessors, (1597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:15:16,217 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:15:16,217 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 486 [2022-12-13 22:15:16,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:15:16,629 INFO L130 PetriNetUnfolder]: 1632/2601 cut-off events. [2022-12-13 22:15:16,629 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2022-12-13 22:15:16,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5354 conditions, 2601 events. 1632/2601 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 13691 event pairs, 1140 based on Foata normal form. 0/1311 useless extension candidates. Maximal degree in co-relation 4239. Up to 522 conditions per place. [2022-12-13 22:15:16,639 INFO L137 encePairwiseOnDemand]: 478/486 looper letters, 145 selfloop transitions, 21 changer transitions 0/166 dead transitions. [2022-12-13 22:15:16,639 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 166 transitions, 750 flow [2022-12-13 22:15:16,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 22:15:16,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 22:15:16,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1761 transitions. [2022-12-13 22:15:16,644 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.517636684303351 [2022-12-13 22:15:16,644 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1761 transitions. [2022-12-13 22:15:16,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1761 transitions. [2022-12-13 22:15:16,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:15:16,645 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1761 transitions. [2022-12-13 22:15:16,648 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 251.57142857142858) internal successors, (1761), 7 states have internal predecessors, (1761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:15:16,652 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 486.0) internal successors, (3888), 8 states have internal predecessors, (3888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:15:16,653 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 486.0) internal successors, (3888), 8 states have internal predecessors, (3888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:15:16,653 INFO L175 Difference]: Start difference. First operand has 37 places, 39 transitions, 112 flow. Second operand 7 states and 1761 transitions. [2022-12-13 22:15:16,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 166 transitions, 750 flow [2022-12-13 22:15:16,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 166 transitions, 736 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 22:15:16,655 INFO L231 Difference]: Finished difference. Result has 44 places, 54 transitions, 243 flow [2022-12-13 22:15:16,656 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=486, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=243, PETRI_PLACES=44, PETRI_TRANSITIONS=54} [2022-12-13 22:15:16,656 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 8 predicate places. [2022-12-13 22:15:16,656 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 54 transitions, 243 flow [2022-12-13 22:15:16,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 228.14285714285714) internal successors, (1597), 7 states have internal predecessors, (1597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:15:16,657 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:15:16,657 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2022-12-13 22:15:16,664 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7865cfd-0ad8-4ac7-b03a-c2aae245a334/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 22:15:16,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7865cfd-0ad8-4ac7-b03a-c2aae245a334/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:15:16,858 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 22:15:16,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:15:16,859 INFO L85 PathProgramCache]: Analyzing trace with hash 28664818, now seen corresponding path program 1 times [2022-12-13 22:15:16,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:15:16,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829907912] [2022-12-13 22:15:16,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:15:16,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:15:16,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:16,911 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 22:15:16,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:15:16,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829907912] [2022-12-13 22:15:16,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829907912] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:15:16,912 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:15:16,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 22:15:16,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865286325] [2022-12-13 22:15:16,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:15:16,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 22:15:16,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:15:16,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 22:15:16,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 22:15:16,931 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 486 [2022-12-13 22:15:16,932 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 54 transitions, 243 flow. Second operand has 3 states, 3 states have (on average 228.33333333333334) internal successors, (685), 3 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:15:16,932 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:15:16,932 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 486 [2022-12-13 22:15:16,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:15:17,139 INFO L130 PetriNetUnfolder]: 1626/2593 cut-off events. [2022-12-13 22:15:17,139 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2022-12-13 22:15:17,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5356 conditions, 2593 events. 1626/2593 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 13707 event pairs, 1140 based on Foata normal form. 2/1313 useless extension candidates. Maximal degree in co-relation 3194. Up to 2593 conditions per place. [2022-12-13 22:15:17,147 INFO L137 encePairwiseOnDemand]: 483/486 looper letters, 45 selfloop transitions, 1 changer transitions 0/46 dead transitions. [2022-12-13 22:15:17,148 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 46 transitions, 281 flow [2022-12-13 22:15:17,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 22:15:17,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 22:15:17,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 717 transitions. [2022-12-13 22:15:17,150 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49176954732510286 [2022-12-13 22:15:17,150 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 717 transitions. [2022-12-13 22:15:17,150 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 717 transitions. [2022-12-13 22:15:17,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:15:17,150 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 717 transitions. [2022-12-13 22:15:17,151 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 239.0) internal successors, (717), 3 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:15:17,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 486.0) internal successors, (1944), 4 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:15:17,154 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 486.0) internal successors, (1944), 4 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:15:17,154 INFO L175 Difference]: Start difference. First operand has 44 places, 54 transitions, 243 flow. Second operand 3 states and 717 transitions. [2022-12-13 22:15:17,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 46 transitions, 281 flow [2022-12-13 22:15:17,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 46 transitions, 262 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-12-13 22:15:17,155 INFO L231 Difference]: Finished difference. Result has 42 places, 46 transitions, 172 flow [2022-12-13 22:15:17,155 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=486, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=172, PETRI_PLACES=42, PETRI_TRANSITIONS=46} [2022-12-13 22:15:17,156 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 6 predicate places. [2022-12-13 22:15:17,156 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 46 transitions, 172 flow [2022-12-13 22:15:17,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 228.33333333333334) internal successors, (685), 3 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:15:17,157 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:15:17,157 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2022-12-13 22:15:17,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 22:15:17,157 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 22:15:17,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:15:17,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1777165286, now seen corresponding path program 2 times [2022-12-13 22:15:17,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:15:17,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414542299] [2022-12-13 22:15:17,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:15:17,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:15:17,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:17,237 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:15:17,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:15:17,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414542299] [2022-12-13 22:15:17,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414542299] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:15:17,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345273491] [2022-12-13 22:15:17,237 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 22:15:17,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:15:17,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7865cfd-0ad8-4ac7-b03a-c2aae245a334/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:15:17,239 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7865cfd-0ad8-4ac7-b03a-c2aae245a334/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:15:17,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7865cfd-0ad8-4ac7-b03a-c2aae245a334/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 22:15:17,293 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 22:15:17,293 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 22:15:17,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 22:15:17,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:15:17,309 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 22:15:17,309 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 22:15:17,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1345273491] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:15:17,310 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 22:15:17,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2022-12-13 22:15:17,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852600920] [2022-12-13 22:15:17,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:15:17,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 22:15:17,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:15:17,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 22:15:17,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-12-13 22:15:17,328 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 486 [2022-12-13 22:15:17,329 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 46 transitions, 172 flow. Second operand has 3 states, 3 states have (on average 230.0) internal successors, (690), 3 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:15:17,330 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:15:17,330 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 486 [2022-12-13 22:15:17,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:15:17,537 INFO L130 PetriNetUnfolder]: 1626/2592 cut-off events. [2022-12-13 22:15:17,537 INFO L131 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2022-12-13 22:15:17,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5341 conditions, 2592 events. 1626/2592 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 13694 event pairs, 1140 based on Foata normal form. 1/1312 useless extension candidates. Maximal degree in co-relation 5329. Up to 2587 conditions per place. [2022-12-13 22:15:17,551 INFO L137 encePairwiseOnDemand]: 483/486 looper letters, 39 selfloop transitions, 6 changer transitions 0/45 dead transitions. [2022-12-13 22:15:17,551 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 45 transitions, 252 flow [2022-12-13 22:15:17,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 22:15:17,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 22:15:17,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 721 transitions. [2022-12-13 22:15:17,555 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4945130315500686 [2022-12-13 22:15:17,555 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 721 transitions. [2022-12-13 22:15:17,555 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 721 transitions. [2022-12-13 22:15:17,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:15:17,555 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 721 transitions. [2022-12-13 22:15:17,556 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 240.33333333333334) internal successors, (721), 3 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:15:17,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 486.0) internal successors, (1944), 4 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:15:17,559 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 486.0) internal successors, (1944), 4 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:15:17,559 INFO L175 Difference]: Start difference. First operand has 42 places, 46 transitions, 172 flow. Second operand 3 states and 721 transitions. [2022-12-13 22:15:17,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 45 transitions, 252 flow [2022-12-13 22:15:17,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 45 transitions, 251 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 22:15:17,560 INFO L231 Difference]: Finished difference. Result has 42 places, 45 transitions, 173 flow [2022-12-13 22:15:17,561 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=486, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=173, PETRI_PLACES=42, PETRI_TRANSITIONS=45} [2022-12-13 22:15:17,561 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 6 predicate places. [2022-12-13 22:15:17,561 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 45 transitions, 173 flow [2022-12-13 22:15:17,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 230.0) internal successors, (690), 3 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:15:17,562 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:15:17,562 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:15:17,567 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7865cfd-0ad8-4ac7-b03a-c2aae245a334/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 22:15:17,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7865cfd-0ad8-4ac7-b03a-c2aae245a334/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:15:17,763 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 22:15:17,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:15:17,763 INFO L85 PathProgramCache]: Analyzing trace with hash -231752804, now seen corresponding path program 1 times [2022-12-13 22:15:17,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:15:17,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899162323] [2022-12-13 22:15:17,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:15:17,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:15:17,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:17,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:15:17,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:15:17,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899162323] [2022-12-13 22:15:17,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899162323] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:15:17,799 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:15:17,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 22:15:17,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771934245] [2022-12-13 22:15:17,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:15:17,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 22:15:17,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:15:17,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 22:15:17,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 22:15:17,812 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 486 [2022-12-13 22:15:17,814 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 45 transitions, 173 flow. Second operand has 3 states, 3 states have (on average 233.33333333333334) internal successors, (700), 3 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:15:17,814 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:15:17,814 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 486 [2022-12-13 22:15:17,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:15:18,186 INFO L130 PetriNetUnfolder]: 2786/4462 cut-off events. [2022-12-13 22:15:18,186 INFO L131 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2022-12-13 22:15:18,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9167 conditions, 4462 events. 2786/4462 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 26960 event pairs, 1140 based on Foata normal form. 0/2322 useless extension candidates. Maximal degree in co-relation 9154. Up to 2593 conditions per place. [2022-12-13 22:15:18,201 INFO L137 encePairwiseOnDemand]: 482/486 looper letters, 65 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2022-12-13 22:15:18,201 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 67 transitions, 354 flow [2022-12-13 22:15:18,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 22:15:18,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 22:15:18,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 750 transitions. [2022-12-13 22:15:18,203 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.51440329218107 [2022-12-13 22:15:18,203 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 750 transitions. [2022-12-13 22:15:18,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 750 transitions. [2022-12-13 22:15:18,203 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:15:18,203 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 750 transitions. [2022-12-13 22:15:18,204 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 250.0) internal successors, (750), 3 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:15:18,206 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 486.0) internal successors, (1944), 4 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:15:18,207 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 486.0) internal successors, (1944), 4 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:15:18,207 INFO L175 Difference]: Start difference. First operand has 42 places, 45 transitions, 173 flow. Second operand 3 states and 750 transitions. [2022-12-13 22:15:18,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 67 transitions, 354 flow [2022-12-13 22:15:18,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 67 transitions, 342 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 22:15:18,208 INFO L231 Difference]: Finished difference. Result has 43 places, 46 transitions, 175 flow [2022-12-13 22:15:18,209 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=486, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=175, PETRI_PLACES=43, PETRI_TRANSITIONS=46} [2022-12-13 22:15:18,209 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 7 predicate places. [2022-12-13 22:15:18,209 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 46 transitions, 175 flow [2022-12-13 22:15:18,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 233.33333333333334) internal successors, (700), 3 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:15:18,210 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:15:18,210 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:15:18,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 22:15:18,210 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 22:15:18,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:15:18,210 INFO L85 PathProgramCache]: Analyzing trace with hash -231752257, now seen corresponding path program 1 times [2022-12-13 22:15:18,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:15:18,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766656713] [2022-12-13 22:15:18,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:15:18,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:15:18,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:18,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:15:18,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:15:18,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766656713] [2022-12-13 22:15:18,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766656713] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:15:18,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:15:18,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 22:15:18,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682311800] [2022-12-13 22:15:18,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:15:18,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 22:15:18,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:15:18,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 22:15:18,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 22:15:18,346 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 486 [2022-12-13 22:15:18,347 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 46 transitions, 175 flow. Second operand has 4 states, 4 states have (on average 220.75) internal successors, (883), 4 states have internal predecessors, (883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:15:18,347 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:15:18,347 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 486 [2022-12-13 22:15:18,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:15:18,930 INFO L130 PetriNetUnfolder]: 4807/7556 cut-off events. [2022-12-13 22:15:18,930 INFO L131 PetriNetUnfolder]: For 704/704 co-relation queries the response was YES. [2022-12-13 22:15:18,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16375 conditions, 7556 events. 4807/7556 cut-off events. For 704/704 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 45972 event pairs, 3154 based on Foata normal form. 0/4453 useless extension candidates. Maximal degree in co-relation 16362. Up to 3556 conditions per place. [2022-12-13 22:15:18,960 INFO L137 encePairwiseOnDemand]: 478/486 looper letters, 100 selfloop transitions, 6 changer transitions 0/106 dead transitions. [2022-12-13 22:15:18,960 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 106 transitions, 566 flow [2022-12-13 22:15:18,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 22:15:18,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 22:15:18,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1189 transitions. [2022-12-13 22:15:18,962 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48930041152263376 [2022-12-13 22:15:18,962 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1189 transitions. [2022-12-13 22:15:18,963 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1189 transitions. [2022-12-13 22:15:18,963 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:15:18,963 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1189 transitions. [2022-12-13 22:15:18,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 237.8) internal successors, (1189), 5 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) [2022-12-13 22:15:18,966 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 486.0) internal successors, (2916), 6 states have internal predecessors, (2916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:15:18,967 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 486.0) internal successors, (2916), 6 states have internal predecessors, (2916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:15:18,967 INFO L175 Difference]: Start difference. First operand has 43 places, 46 transitions, 175 flow. Second operand 5 states and 1189 transitions. [2022-12-13 22:15:18,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 106 transitions, 566 flow [2022-12-13 22:15:18,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 106 transitions, 560 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 22:15:18,970 INFO L231 Difference]: Finished difference. Result has 49 places, 49 transitions, 218 flow [2022-12-13 22:15:18,970 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=486, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=218, PETRI_PLACES=49, PETRI_TRANSITIONS=49} [2022-12-13 22:15:18,970 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 13 predicate places. [2022-12-13 22:15:18,970 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 49 transitions, 218 flow [2022-12-13 22:15:18,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 220.75) internal successors, (883), 4 states have internal predecessors, (883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:15:18,971 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:15:18,971 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:15:18,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 22:15:18,971 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 22:15:18,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:15:18,971 INFO L85 PathProgramCache]: Analyzing trace with hash -231752383, now seen corresponding path program 1 times [2022-12-13 22:15:18,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:15:18,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136260066] [2022-12-13 22:15:18,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:15:18,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:15:18,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:19,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:15:19,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:15:19,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136260066] [2022-12-13 22:15:19,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136260066] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:15:19,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:15:19,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 22:15:19,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543603856] [2022-12-13 22:15:19,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:15:19,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 22:15:19,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:15:19,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 22:15:19,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 22:15:19,165 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 486 [2022-12-13 22:15:19,166 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 49 transitions, 218 flow. Second operand has 5 states, 5 states have (on average 218.4) internal successors, (1092), 5 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:15:19,166 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:15:19,166 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 486 [2022-12-13 22:15:19,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:15:19,807 INFO L130 PetriNetUnfolder]: 4589/7174 cut-off events. [2022-12-13 22:15:19,807 INFO L131 PetriNetUnfolder]: For 2029/2029 co-relation queries the response was YES. [2022-12-13 22:15:19,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16838 conditions, 7174 events. 4589/7174 cut-off events. For 2029/2029 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 42908 event pairs, 2715 based on Foata normal form. 156/5273 useless extension candidates. Maximal degree in co-relation 16821. Up to 5270 conditions per place. [2022-12-13 22:15:19,825 INFO L137 encePairwiseOnDemand]: 478/486 looper letters, 90 selfloop transitions, 11 changer transitions 0/101 dead transitions. [2022-12-13 22:15:19,826 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 101 transitions, 567 flow [2022-12-13 22:15:19,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 22:15:19,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 22:15:19,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1390 transitions. [2022-12-13 22:15:19,828 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4766803840877915 [2022-12-13 22:15:19,828 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1390 transitions. [2022-12-13 22:15:19,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1390 transitions. [2022-12-13 22:15:19,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:15:19,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1390 transitions. [2022-12-13 22:15:19,830 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 231.66666666666666) internal successors, (1390), 6 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:15:19,832 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 486.0) internal successors, (3402), 7 states have internal predecessors, (3402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:15:19,833 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 486.0) internal successors, (3402), 7 states have internal predecessors, (3402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:15:19,833 INFO L175 Difference]: Start difference. First operand has 49 places, 49 transitions, 218 flow. Second operand 6 states and 1390 transitions. [2022-12-13 22:15:19,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 101 transitions, 567 flow [2022-12-13 22:15:19,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 101 transitions, 563 flow, removed 2 selfloop flow, removed 0 redundant places. [2022-12-13 22:15:19,836 INFO L231 Difference]: Finished difference. Result has 58 places, 52 transitions, 289 flow [2022-12-13 22:15:19,836 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=486, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=289, PETRI_PLACES=58, PETRI_TRANSITIONS=52} [2022-12-13 22:15:19,837 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 22 predicate places. [2022-12-13 22:15:19,837 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 52 transitions, 289 flow [2022-12-13 22:15:19,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 218.4) internal successors, (1092), 5 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:15:19,837 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:15:19,837 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2022-12-13 22:15:19,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 22:15:19,838 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 22:15:19,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:15:19,838 INFO L85 PathProgramCache]: Analyzing trace with hash -216628026, now seen corresponding path program 1 times [2022-12-13 22:15:19,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:15:19,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134504247] [2022-12-13 22:15:19,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:15:19,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:15:19,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:19,903 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:15:19,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:15:19,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134504247] [2022-12-13 22:15:19,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134504247] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:15:19,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [135670729] [2022-12-13 22:15:19,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:15:19,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:15:19,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7865cfd-0ad8-4ac7-b03a-c2aae245a334/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:15:19,905 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7865cfd-0ad8-4ac7-b03a-c2aae245a334/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:15:19,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7865cfd-0ad8-4ac7-b03a-c2aae245a334/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 22:15:19,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:19,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 22:15:19,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:15:19,982 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:15:19,983 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:15:20,025 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:15:20,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [135670729] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:15:20,025 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 22:15:20,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-12-13 22:15:20,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998292710] [2022-12-13 22:15:20,026 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 22:15:20,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 22:15:20,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:15:20,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 22:15:20,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-12-13 22:15:20,107 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 486 [2022-12-13 22:15:20,111 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 52 transitions, 289 flow. Second operand has 13 states, 13 states have (on average 228.15384615384616) internal successors, (2966), 13 states have internal predecessors, (2966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:15:20,111 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:15:20,111 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 486 [2022-12-13 22:15:20,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:15:21,725 INFO L130 PetriNetUnfolder]: 10283/16042 cut-off events. [2022-12-13 22:15:21,725 INFO L131 PetriNetUnfolder]: For 12889/12889 co-relation queries the response was YES. [2022-12-13 22:15:21,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40940 conditions, 16042 events. 10283/16042 cut-off events. For 12889/12889 co-relation queries the response was YES. Maximal size of possible extension queue 520. Compared 102172 event pairs, 6763 based on Foata normal form. 12/11502 useless extension candidates. Maximal degree in co-relation 40917. Up to 2217 conditions per place. [2022-12-13 22:15:21,794 INFO L137 encePairwiseOnDemand]: 481/486 looper letters, 361 selfloop transitions, 32 changer transitions 0/393 dead transitions. [2022-12-13 22:15:21,794 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 393 transitions, 2485 flow [2022-12-13 22:15:21,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 22:15:21,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-13 22:15:21,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3071 transitions. [2022-12-13 22:15:21,800 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5265775034293553 [2022-12-13 22:15:21,800 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3071 transitions. [2022-12-13 22:15:21,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3071 transitions. [2022-12-13 22:15:21,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:15:21,802 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3071 transitions. [2022-12-13 22:15:21,807 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 255.91666666666666) internal successors, (3071), 12 states have internal predecessors, (3071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:15:21,813 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 486.0) internal successors, (6318), 13 states have internal predecessors, (6318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:15:21,815 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 486.0) internal successors, (6318), 13 states have internal predecessors, (6318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:15:21,815 INFO L175 Difference]: Start difference. First operand has 58 places, 52 transitions, 289 flow. Second operand 12 states and 3071 transitions. [2022-12-13 22:15:21,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 393 transitions, 2485 flow [2022-12-13 22:15:21,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 393 transitions, 2382 flow, removed 44 selfloop flow, removed 2 redundant places. [2022-12-13 22:15:21,836 INFO L231 Difference]: Finished difference. Result has 73 places, 70 transitions, 498 flow [2022-12-13 22:15:21,837 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=486, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=498, PETRI_PLACES=73, PETRI_TRANSITIONS=70} [2022-12-13 22:15:21,837 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 37 predicate places. [2022-12-13 22:15:21,837 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 70 transitions, 498 flow [2022-12-13 22:15:21,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 228.15384615384616) internal successors, (2966), 13 states have internal predecessors, (2966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:15:21,839 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:15:21,839 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:15:21,845 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7865cfd-0ad8-4ac7-b03a-c2aae245a334/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 22:15:22,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7865cfd-0ad8-4ac7-b03a-c2aae245a334/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:15:22,040 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 22:15:22,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:15:22,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1859343036, now seen corresponding path program 1 times [2022-12-13 22:15:22,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:15:22,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330270773] [2022-12-13 22:15:22,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:15:22,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:15:22,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:22,126 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:15:22,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:15:22,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330270773] [2022-12-13 22:15:22,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330270773] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:15:22,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658694500] [2022-12-13 22:15:22,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:15:22,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:15:22,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7865cfd-0ad8-4ac7-b03a-c2aae245a334/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:15:22,128 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7865cfd-0ad8-4ac7-b03a-c2aae245a334/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:15:22,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7865cfd-0ad8-4ac7-b03a-c2aae245a334/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 22:15:22,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:22,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 22:15:22,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:15:22,222 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 22:15:22,222 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 22:15:22,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1658694500] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:15:22,222 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 22:15:22,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2022-12-13 22:15:22,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254308996] [2022-12-13 22:15:22,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:15:22,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 22:15:22,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:15:22,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 22:15:22,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 22:15:22,262 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 486 [2022-12-13 22:15:22,262 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 70 transitions, 498 flow. Second operand has 3 states, 3 states have (on average 231.66666666666666) internal successors, (695), 3 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:15:22,262 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:15:22,263 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 486 [2022-12-13 22:15:22,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:15:23,206 INFO L130 PetriNetUnfolder]: 7437/11784 cut-off events. [2022-12-13 22:15:23,206 INFO L131 PetriNetUnfolder]: For 9642/9642 co-relation queries the response was YES. [2022-12-13 22:15:23,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27643 conditions, 11784 events. 7437/11784 cut-off events. For 9642/9642 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 74147 event pairs, 4833 based on Foata normal form. 1080/9520 useless extension candidates. Maximal degree in co-relation 27614. Up to 11784 conditions per place. [2022-12-13 22:15:23,249 INFO L137 encePairwiseOnDemand]: 482/486 looper letters, 64 selfloop transitions, 1 changer transitions 0/65 dead transitions. [2022-12-13 22:15:23,249 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 65 transitions, 594 flow [2022-12-13 22:15:23,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 22:15:23,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 22:15:23,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 720 transitions. [2022-12-13 22:15:23,251 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49382716049382713 [2022-12-13 22:15:23,251 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 720 transitions. [2022-12-13 22:15:23,251 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 720 transitions. [2022-12-13 22:15:23,251 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:15:23,251 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 720 transitions. [2022-12-13 22:15:23,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 240.0) internal successors, (720), 3 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:15:23,255 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 486.0) internal successors, (1944), 4 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:15:23,256 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 486.0) internal successors, (1944), 4 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:15:23,256 INFO L175 Difference]: Start difference. First operand has 73 places, 70 transitions, 498 flow. Second operand 3 states and 720 transitions. [2022-12-13 22:15:23,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 65 transitions, 594 flow [2022-12-13 22:15:23,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 65 transitions, 495 flow, removed 26 selfloop flow, removed 9 redundant places. [2022-12-13 22:15:23,265 INFO L231 Difference]: Finished difference. Result has 63 places, 65 transitions, 367 flow [2022-12-13 22:15:23,265 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=486, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=367, PETRI_PLACES=63, PETRI_TRANSITIONS=65} [2022-12-13 22:15:23,266 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 27 predicate places. [2022-12-13 22:15:23,266 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 65 transitions, 367 flow [2022-12-13 22:15:23,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 231.66666666666666) internal successors, (695), 3 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:15:23,267 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:15:23,267 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:15:23,272 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7865cfd-0ad8-4ac7-b03a-c2aae245a334/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 22:15:23,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7865cfd-0ad8-4ac7-b03a-c2aae245a334/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:15:23,468 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 22:15:23,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:15:23,468 INFO L85 PathProgramCache]: Analyzing trace with hash 1406888294, now seen corresponding path program 1 times [2022-12-13 22:15:23,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:15:23,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984731973] [2022-12-13 22:15:23,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:15:23,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:15:23,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:23,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:15:23,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:15:23,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984731973] [2022-12-13 22:15:23,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984731973] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:15:23,508 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:15:23,508 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 22:15:23,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672956542] [2022-12-13 22:15:23,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:15:23,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 22:15:23,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:15:23,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 22:15:23,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 22:15:23,520 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 486 [2022-12-13 22:15:23,522 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 65 transitions, 367 flow. Second operand has 3 states, 3 states have (on average 233.66666666666666) internal successors, (701), 3 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:15:23,522 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:15:23,522 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 486 [2022-12-13 22:15:23,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:15:24,973 INFO L130 PetriNetUnfolder]: 10660/17009 cut-off events. [2022-12-13 22:15:24,973 INFO L131 PetriNetUnfolder]: For 3307/3307 co-relation queries the response was YES. [2022-12-13 22:15:24,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40097 conditions, 17009 events. 10660/17009 cut-off events. For 3307/3307 co-relation queries the response was YES. Maximal size of possible extension queue 604. Compared 116609 event pairs, 4833 based on Foata normal form. 0/12433 useless extension candidates. Maximal degree in co-relation 40072. Up to 11785 conditions per place. [2022-12-13 22:15:25,023 INFO L137 encePairwiseOnDemand]: 483/486 looper letters, 84 selfloop transitions, 2 changer transitions 0/86 dead transitions. [2022-12-13 22:15:25,023 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 86 transitions, 610 flow [2022-12-13 22:15:25,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 22:15:25,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 22:15:25,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 742 transitions. [2022-12-13 22:15:25,025 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5089163237311386 [2022-12-13 22:15:25,025 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 742 transitions. [2022-12-13 22:15:25,025 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 742 transitions. [2022-12-13 22:15:25,026 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:15:25,026 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 742 transitions. [2022-12-13 22:15:25,027 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 247.33333333333334) internal successors, (742), 3 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:15:25,029 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 486.0) internal successors, (1944), 4 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:15:25,029 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 486.0) internal successors, (1944), 4 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:15:25,029 INFO L175 Difference]: Start difference. First operand has 63 places, 65 transitions, 367 flow. Second operand 3 states and 742 transitions. [2022-12-13 22:15:25,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 86 transitions, 610 flow [2022-12-13 22:15:25,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 86 transitions, 609 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 22:15:25,036 INFO L231 Difference]: Finished difference. Result has 65 places, 66 transitions, 378 flow [2022-12-13 22:15:25,036 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=486, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=378, PETRI_PLACES=65, PETRI_TRANSITIONS=66} [2022-12-13 22:15:25,037 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 29 predicate places. [2022-12-13 22:15:25,037 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 66 transitions, 378 flow [2022-12-13 22:15:25,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 233.66666666666666) internal successors, (701), 3 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:15:25,037 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:15:25,037 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:15:25,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 22:15:25,037 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 22:15:25,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:15:25,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1030417151, now seen corresponding path program 1 times [2022-12-13 22:15:25,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:15:25,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925975297] [2022-12-13 22:15:25,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:15:25,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:15:25,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:25,095 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:15:25,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:15:25,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925975297] [2022-12-13 22:15:25,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925975297] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:15:25,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825745801] [2022-12-13 22:15:25,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:15:25,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:15:25,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7865cfd-0ad8-4ac7-b03a-c2aae245a334/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:15:25,097 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7865cfd-0ad8-4ac7-b03a-c2aae245a334/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:15:25,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7865cfd-0ad8-4ac7-b03a-c2aae245a334/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 22:15:25,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:25,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 22:15:25,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:15:25,185 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 22:15:25,185 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 22:15:25,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1825745801] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:15:25,186 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 22:15:25,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2022-12-13 22:15:25,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14592616] [2022-12-13 22:15:25,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:15:25,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 22:15:25,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:15:25,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 22:15:25,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 22:15:25,219 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 486 [2022-12-13 22:15:25,220 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 66 transitions, 378 flow. Second operand has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:15:25,220 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:15:25,220 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 486 [2022-12-13 22:15:25,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:15:26,605 INFO L130 PetriNetUnfolder]: 8834/14039 cut-off events. [2022-12-13 22:15:26,605 INFO L131 PetriNetUnfolder]: For 6047/6047 co-relation queries the response was YES. [2022-12-13 22:15:26,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34210 conditions, 14039 events. 8834/14039 cut-off events. For 6047/6047 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 90866 event pairs, 6094 based on Foata normal form. 1056/13115 useless extension candidates. Maximal degree in co-relation 34184. Up to 14027 conditions per place. [2022-12-13 22:15:26,643 INFO L137 encePairwiseOnDemand]: 482/486 looper letters, 50 selfloop transitions, 12 changer transitions 0/62 dead transitions. [2022-12-13 22:15:26,643 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 62 transitions, 476 flow [2022-12-13 22:15:26,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 22:15:26,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 22:15:26,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 938 transitions. [2022-12-13 22:15:26,645 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4825102880658436 [2022-12-13 22:15:26,645 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 938 transitions. [2022-12-13 22:15:26,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 938 transitions. [2022-12-13 22:15:26,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:15:26,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 938 transitions. [2022-12-13 22:15:26,647 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 234.5) internal successors, (938), 4 states have internal predecessors, (938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:15:26,649 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 486.0) internal successors, (2430), 5 states have internal predecessors, (2430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:15:26,649 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 486.0) internal successors, (2430), 5 states have internal predecessors, (2430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:15:26,649 INFO L175 Difference]: Start difference. First operand has 65 places, 66 transitions, 378 flow. Second operand 4 states and 938 transitions. [2022-12-13 22:15:26,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 62 transitions, 476 flow [2022-12-13 22:15:26,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 62 transitions, 445 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-13 22:15:26,671 INFO L231 Difference]: Finished difference. Result has 61 places, 62 transitions, 345 flow [2022-12-13 22:15:26,671 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=486, PETRI_DIFFERENCE_MINUEND_FLOW=321, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=345, PETRI_PLACES=61, PETRI_TRANSITIONS=62} [2022-12-13 22:15:26,671 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 25 predicate places. [2022-12-13 22:15:26,671 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 62 transitions, 345 flow [2022-12-13 22:15:26,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:15:26,672 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:15:26,672 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:15:26,675 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7865cfd-0ad8-4ac7-b03a-c2aae245a334/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 22:15:26,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7865cfd-0ad8-4ac7-b03a-c2aae245a334/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-12-13 22:15:26,872 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 22:15:26,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:15:26,873 INFO L85 PathProgramCache]: Analyzing trace with hash 663865304, now seen corresponding path program 1 times [2022-12-13 22:15:26,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:15:26,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196689094] [2022-12-13 22:15:26,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:15:26,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:15:26,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:26,900 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:15:26,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:15:26,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196689094] [2022-12-13 22:15:26,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196689094] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:15:26,901 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:15:26,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 22:15:26,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063759352] [2022-12-13 22:15:26,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:15:26,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 22:15:26,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:15:26,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 22:15:26,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 22:15:26,912 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 486 [2022-12-13 22:15:26,913 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 62 transitions, 345 flow. Second operand has 3 states, 3 states have (on average 234.0) internal successors, (702), 3 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:15:26,913 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:15:26,913 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 486 [2022-12-13 22:15:26,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:15:27,907 INFO L130 PetriNetUnfolder]: 8086/13291 cut-off events. [2022-12-13 22:15:27,907 INFO L131 PetriNetUnfolder]: For 1668/1668 co-relation queries the response was YES. [2022-12-13 22:15:27,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31214 conditions, 13291 events. 8086/13291 cut-off events. For 1668/1668 co-relation queries the response was YES. Maximal size of possible extension queue 488. Compared 92557 event pairs, 1958 based on Foata normal form. 0/12059 useless extension candidates. Maximal degree in co-relation 31190. Up to 8580 conditions per place. [2022-12-13 22:15:27,939 INFO L137 encePairwiseOnDemand]: 484/486 looper letters, 59 selfloop transitions, 1 changer transitions 16/76 dead transitions. [2022-12-13 22:15:27,939 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 76 transitions, 534 flow [2022-12-13 22:15:27,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 22:15:27,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 22:15:27,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 735 transitions. [2022-12-13 22:15:27,941 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5041152263374485 [2022-12-13 22:15:27,941 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 735 transitions. [2022-12-13 22:15:27,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 735 transitions. [2022-12-13 22:15:27,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:15:27,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 735 transitions. [2022-12-13 22:15:27,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 245.0) internal successors, (735), 3 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:15:27,943 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 486.0) internal successors, (1944), 4 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:15:27,943 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 486.0) internal successors, (1944), 4 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:15:27,943 INFO L175 Difference]: Start difference. First operand has 61 places, 62 transitions, 345 flow. Second operand 3 states and 735 transitions. [2022-12-13 22:15:27,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 76 transitions, 534 flow [2022-12-13 22:15:27,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 76 transitions, 521 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 22:15:27,958 INFO L231 Difference]: Finished difference. Result has 60 places, 53 transitions, 313 flow [2022-12-13 22:15:27,958 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=486, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=313, PETRI_PLACES=60, PETRI_TRANSITIONS=53} [2022-12-13 22:15:27,958 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 24 predicate places. [2022-12-13 22:15:27,958 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 53 transitions, 313 flow [2022-12-13 22:15:27,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 234.0) internal successors, (702), 3 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:15:27,958 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:15:27,958 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:15:27,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 22:15:27,959 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 22:15:27,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:15:27,959 INFO L85 PathProgramCache]: Analyzing trace with hash 623932520, now seen corresponding path program 1 times [2022-12-13 22:15:27,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:15:27,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818705442] [2022-12-13 22:15:27,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:15:27,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:15:27,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:27,981 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:15:27,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:15:27,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818705442] [2022-12-13 22:15:27,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818705442] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:15:27,981 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:15:27,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 22:15:27,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442877822] [2022-12-13 22:15:27,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:15:27,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 22:15:27,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:15:27,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 22:15:27,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 22:15:27,993 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 486 [2022-12-13 22:15:27,994 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 53 transitions, 313 flow. Second operand has 3 states, 3 states have (on average 234.0) internal successors, (702), 3 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:15:27,994 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:15:27,994 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 486 [2022-12-13 22:15:27,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:15:28,387 INFO L130 PetriNetUnfolder]: 2674/4579 cut-off events. [2022-12-13 22:15:28,387 INFO L131 PetriNetUnfolder]: For 1560/1560 co-relation queries the response was YES. [2022-12-13 22:15:28,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11897 conditions, 4579 events. 2674/4579 cut-off events. For 1560/1560 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 28673 event pairs, 110 based on Foata normal form. 0/4271 useless extension candidates. Maximal degree in co-relation 11874. Up to 4048 conditions per place. [2022-12-13 22:15:28,402 INFO L137 encePairwiseOnDemand]: 484/486 looper letters, 59 selfloop transitions, 1 changer transitions 0/60 dead transitions. [2022-12-13 22:15:28,402 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 60 transitions, 455 flow [2022-12-13 22:15:28,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 22:15:28,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 22:15:28,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 719 transitions. [2022-12-13 22:15:28,403 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49314128943758573 [2022-12-13 22:15:28,403 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 719 transitions. [2022-12-13 22:15:28,403 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 719 transitions. [2022-12-13 22:15:28,404 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:15:28,404 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 719 transitions. [2022-12-13 22:15:28,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 239.66666666666666) internal successors, (719), 3 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:15:28,406 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 486.0) internal successors, (1944), 4 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:15:28,406 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 486.0) internal successors, (1944), 4 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:15:28,406 INFO L175 Difference]: Start difference. First operand has 60 places, 53 transitions, 313 flow. Second operand 3 states and 719 transitions. [2022-12-13 22:15:28,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 60 transitions, 455 flow [2022-12-13 22:15:28,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 60 transitions, 453 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 22:15:28,412 INFO L231 Difference]: Finished difference. Result has 54 places, 52 transitions, 310 flow [2022-12-13 22:15:28,412 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=486, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=310, PETRI_PLACES=54, PETRI_TRANSITIONS=52} [2022-12-13 22:15:28,412 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 18 predicate places. [2022-12-13 22:15:28,412 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 52 transitions, 310 flow [2022-12-13 22:15:28,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 234.0) internal successors, (702), 3 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:15:28,413 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:15:28,413 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:15:28,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 22:15:28,413 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 22:15:28,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:15:28,413 INFO L85 PathProgramCache]: Analyzing trace with hash 623932552, now seen corresponding path program 1 times [2022-12-13 22:15:28,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:15:28,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4711207] [2022-12-13 22:15:28,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:15:28,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:15:28,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:28,472 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 22:15:28,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:15:28,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4711207] [2022-12-13 22:15:28,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4711207] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:15:28,473 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:15:28,473 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 22:15:28,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747708121] [2022-12-13 22:15:28,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:15:28,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 22:15:28,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:15:28,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 22:15:28,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 22:15:28,553 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 486 [2022-12-13 22:15:28,554 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 52 transitions, 310 flow. Second operand has 5 states, 5 states have (on average 221.8) internal successors, (1109), 5 states have internal predecessors, (1109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:15:28,554 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:15:28,554 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 486 [2022-12-13 22:15:28,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:15:28,879 INFO L130 PetriNetUnfolder]: 1640/2929 cut-off events. [2022-12-13 22:15:28,879 INFO L131 PetriNetUnfolder]: For 1505/1505 co-relation queries the response was YES. [2022-12-13 22:15:28,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8003 conditions, 2929 events. 1640/2929 cut-off events. For 1505/1505 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 16708 event pairs, 1100 based on Foata normal form. 154/2929 useless extension candidates. Maximal degree in co-relation 7980. Up to 2300 conditions per place. [2022-12-13 22:15:28,886 INFO L137 encePairwiseOnDemand]: 480/486 looper letters, 59 selfloop transitions, 4 changer transitions 38/101 dead transitions. [2022-12-13 22:15:28,886 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 101 transitions, 720 flow [2022-12-13 22:15:28,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 22:15:28,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-13 22:15:28,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1599 transitions. [2022-12-13 22:15:28,889 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.47001763668430335 [2022-12-13 22:15:28,889 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1599 transitions. [2022-12-13 22:15:28,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1599 transitions. [2022-12-13 22:15:28,889 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:15:28,889 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1599 transitions. [2022-12-13 22:15:28,891 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 228.42857142857142) internal successors, (1599), 7 states have internal predecessors, (1599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:15:28,892 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 486.0) internal successors, (3888), 8 states have internal predecessors, (3888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:15:28,893 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 486.0) internal successors, (3888), 8 states have internal predecessors, (3888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:15:28,893 INFO L175 Difference]: Start difference. First operand has 54 places, 52 transitions, 310 flow. Second operand 7 states and 1599 transitions. [2022-12-13 22:15:28,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 101 transitions, 720 flow [2022-12-13 22:15:28,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 101 transitions, 717 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 22:15:28,899 INFO L231 Difference]: Finished difference. Result has 63 places, 52 transitions, 328 flow [2022-12-13 22:15:28,899 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=486, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=328, PETRI_PLACES=63, PETRI_TRANSITIONS=52} [2022-12-13 22:15:28,900 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 27 predicate places. [2022-12-13 22:15:28,900 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 52 transitions, 328 flow [2022-12-13 22:15:28,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 221.8) internal successors, (1109), 5 states have internal predecessors, (1109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:15:28,900 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:15:28,900 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:15:28,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 22:15:28,900 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 22:15:28,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:15:28,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1906115402, now seen corresponding path program 1 times [2022-12-13 22:15:28,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:15:28,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682139459] [2022-12-13 22:15:28,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:15:28,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:15:28,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:28,949 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 22:15:28,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:15:28,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682139459] [2022-12-13 22:15:28,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682139459] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:15:28,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:15:28,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 22:15:28,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209092806] [2022-12-13 22:15:28,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:15:28,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 22:15:28,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:15:28,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 22:15:28,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 22:15:29,055 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 486 [2022-12-13 22:15:29,056 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 52 transitions, 328 flow. Second operand has 5 states, 5 states have (on average 222.0) internal successors, (1110), 5 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:15:29,057 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:15:29,057 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 486 [2022-12-13 22:15:29,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:15:29,331 INFO L130 PetriNetUnfolder]: 1326/2405 cut-off events. [2022-12-13 22:15:29,331 INFO L131 PetriNetUnfolder]: For 1854/1854 co-relation queries the response was YES. [2022-12-13 22:15:29,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7332 conditions, 2405 events. 1326/2405 cut-off events. For 1854/1854 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 13278 event pairs, 1010 based on Foata normal form. 14/2279 useless extension candidates. Maximal degree in co-relation 7304. Up to 2317 conditions per place. [2022-12-13 22:15:29,338 INFO L137 encePairwiseOnDemand]: 481/486 looper letters, 38 selfloop transitions, 13 changer transitions 19/70 dead transitions. [2022-12-13 22:15:29,338 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 70 transitions, 530 flow [2022-12-13 22:15:29,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 22:15:29,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 22:15:29,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1137 transitions. [2022-12-13 22:15:29,340 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4679012345679012 [2022-12-13 22:15:29,340 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1137 transitions. [2022-12-13 22:15:29,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1137 transitions. [2022-12-13 22:15:29,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:15:29,341 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1137 transitions. [2022-12-13 22:15:29,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 227.4) internal successors, (1137), 5 states have internal predecessors, (1137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:15:29,343 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 486.0) internal successors, (2916), 6 states have internal predecessors, (2916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:15:29,343 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 486.0) internal successors, (2916), 6 states have internal predecessors, (2916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:15:29,343 INFO L175 Difference]: Start difference. First operand has 63 places, 52 transitions, 328 flow. Second operand 5 states and 1137 transitions. [2022-12-13 22:15:29,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 70 transitions, 530 flow [2022-12-13 22:15:29,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 70 transitions, 519 flow, removed 2 selfloop flow, removed 5 redundant places. [2022-12-13 22:15:29,350 INFO L231 Difference]: Finished difference. Result has 62 places, 51 transitions, 342 flow [2022-12-13 22:15:29,351 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=486, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=342, PETRI_PLACES=62, PETRI_TRANSITIONS=51} [2022-12-13 22:15:29,351 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 26 predicate places. [2022-12-13 22:15:29,351 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 51 transitions, 342 flow [2022-12-13 22:15:29,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 222.0) internal successors, (1110), 5 states have internal predecessors, (1110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:15:29,351 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:15:29,351 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:15:29,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 22:15:29,351 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 22:15:29,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:15:29,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1214898369, now seen corresponding path program 1 times [2022-12-13 22:15:29,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:15:29,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065279219] [2022-12-13 22:15:29,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:15:29,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:15:29,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:29,410 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 22:15:29,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:15:29,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065279219] [2022-12-13 22:15:29,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065279219] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:15:29,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958022468] [2022-12-13 22:15:29,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:15:29,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:15:29,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7865cfd-0ad8-4ac7-b03a-c2aae245a334/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:15:29,412 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7865cfd-0ad8-4ac7-b03a-c2aae245a334/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:15:29,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7865cfd-0ad8-4ac7-b03a-c2aae245a334/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 22:15:29,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:29,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 22:15:29,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:15:29,540 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 22:15:29,540 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:15:29,591 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 22:15:29,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [958022468] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:15:29,591 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 22:15:29,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 16 [2022-12-13 22:15:29,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560690997] [2022-12-13 22:15:29,592 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 22:15:29,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-13 22:15:29,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:15:29,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-13 22:15:29,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2022-12-13 22:15:30,200 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 486 [2022-12-13 22:15:30,202 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 51 transitions, 342 flow. Second operand has 16 states, 16 states have (on average 211.75) internal successors, (3388), 16 states have internal predecessors, (3388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:15:30,202 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:15:30,202 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 486 [2022-12-13 22:15:30,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:15:30,832 INFO L130 PetriNetUnfolder]: 1908/3497 cut-off events. [2022-12-13 22:15:30,832 INFO L131 PetriNetUnfolder]: For 3614/3614 co-relation queries the response was YES. [2022-12-13 22:15:30,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10666 conditions, 3497 events. 1908/3497 cut-off events. For 3614/3614 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 21752 event pairs, 960 based on Foata normal form. 154/3525 useless extension candidates. Maximal degree in co-relation 10639. Up to 1875 conditions per place. [2022-12-13 22:15:30,842 INFO L137 encePairwiseOnDemand]: 477/486 looper letters, 43 selfloop transitions, 20 changer transitions 87/150 dead transitions. [2022-12-13 22:15:30,842 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 150 transitions, 1035 flow [2022-12-13 22:15:30,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-13 22:15:30,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-12-13 22:15:30,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 4100 transitions. [2022-12-13 22:15:30,851 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.44401126272471303 [2022-12-13 22:15:30,851 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 4100 transitions. [2022-12-13 22:15:30,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 4100 transitions. [2022-12-13 22:15:30,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:15:30,853 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 4100 transitions. [2022-12-13 22:15:30,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 215.78947368421052) internal successors, (4100), 19 states have internal predecessors, (4100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:15:30,870 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 486.0) internal successors, (9720), 20 states have internal predecessors, (9720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:15:30,871 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 486.0) internal successors, (9720), 20 states have internal predecessors, (9720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:15:30,871 INFO L175 Difference]: Start difference. First operand has 62 places, 51 transitions, 342 flow. Second operand 19 states and 4100 transitions. [2022-12-13 22:15:30,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 150 transitions, 1035 flow [2022-12-13 22:15:30,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 150 transitions, 981 flow, removed 12 selfloop flow, removed 5 redundant places. [2022-12-13 22:15:30,897 INFO L231 Difference]: Finished difference. Result has 84 places, 54 transitions, 426 flow [2022-12-13 22:15:30,898 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=486, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=426, PETRI_PLACES=84, PETRI_TRANSITIONS=54} [2022-12-13 22:15:30,898 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 48 predicate places. [2022-12-13 22:15:30,898 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 54 transitions, 426 flow [2022-12-13 22:15:30,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 211.75) internal successors, (3388), 16 states have internal predecessors, (3388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:15:30,899 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:15:30,899 INFO L209 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1] [2022-12-13 22:15:30,903 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7865cfd-0ad8-4ac7-b03a-c2aae245a334/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 22:15:31,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7865cfd-0ad8-4ac7-b03a-c2aae245a334/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-13 22:15:31,100 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 22:15:31,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:15:31,101 INFO L85 PathProgramCache]: Analyzing trace with hash 2094631654, now seen corresponding path program 2 times [2022-12-13 22:15:31,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:15:31,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293910552] [2022-12-13 22:15:31,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:15:31,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:15:31,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:31,239 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:15:31,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:15:31,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293910552] [2022-12-13 22:15:31,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293910552] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:15:31,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1734611212] [2022-12-13 22:15:31,240 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 22:15:31,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:15:31,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7865cfd-0ad8-4ac7-b03a-c2aae245a334/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:15:31,241 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7865cfd-0ad8-4ac7-b03a-c2aae245a334/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:15:31,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7865cfd-0ad8-4ac7-b03a-c2aae245a334/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 22:15:31,302 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 22:15:31,302 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 22:15:31,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 22:15:31,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:15:31,328 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-12-13 22:15:31,328 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 22:15:31,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1734611212] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:15:31,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 22:15:31,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [12] total 14 [2022-12-13 22:15:31,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316684056] [2022-12-13 22:15:31,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:15:31,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 22:15:31,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:15:31,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 22:15:31,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2022-12-13 22:15:31,387 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 486 [2022-12-13 22:15:31,388 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 54 transitions, 426 flow. Second operand has 4 states, 4 states have (on average 228.0) internal successors, (912), 4 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:15:31,388 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:15:31,388 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 486 [2022-12-13 22:15:31,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:15:31,719 INFO L130 PetriNetUnfolder]: 1227/2306 cut-off events. [2022-12-13 22:15:31,719 INFO L131 PetriNetUnfolder]: For 4081/4081 co-relation queries the response was YES. [2022-12-13 22:15:31,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7898 conditions, 2306 events. 1227/2306 cut-off events. For 4081/4081 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 13090 event pairs, 945 based on Foata normal form. 3/2183 useless extension candidates. Maximal degree in co-relation 7861. Up to 2306 conditions per place. [2022-12-13 22:15:31,729 INFO L137 encePairwiseOnDemand]: 484/486 looper letters, 46 selfloop transitions, 1 changer transitions 5/52 dead transitions. [2022-12-13 22:15:31,729 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 52 transitions, 481 flow [2022-12-13 22:15:31,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 22:15:31,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 22:15:31,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 699 transitions. [2022-12-13 22:15:31,731 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4794238683127572 [2022-12-13 22:15:31,731 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 699 transitions. [2022-12-13 22:15:31,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 699 transitions. [2022-12-13 22:15:31,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:15:31,732 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 699 transitions. [2022-12-13 22:15:31,733 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 233.0) internal successors, (699), 3 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:15:31,734 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 486.0) internal successors, (1944), 4 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:15:31,734 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 486.0) internal successors, (1944), 4 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:15:31,735 INFO L175 Difference]: Start difference. First operand has 84 places, 54 transitions, 426 flow. Second operand 3 states and 699 transitions. [2022-12-13 22:15:31,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 52 transitions, 481 flow [2022-12-13 22:15:31,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 52 transitions, 346 flow, removed 15 selfloop flow, removed 24 redundant places. [2022-12-13 22:15:31,759 INFO L231 Difference]: Finished difference. Result has 52 places, 47 transitions, 216 flow [2022-12-13 22:15:31,759 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=486, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=216, PETRI_PLACES=52, PETRI_TRANSITIONS=47} [2022-12-13 22:15:31,760 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 16 predicate places. [2022-12-13 22:15:31,760 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 47 transitions, 216 flow [2022-12-13 22:15:31,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 228.0) internal successors, (912), 4 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:15:31,760 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 22:15:31,760 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:15:31,764 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7865cfd-0ad8-4ac7-b03a-c2aae245a334/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 22:15:31,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7865cfd-0ad8-4ac7-b03a-c2aae245a334/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-13 22:15:31,961 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-12-13 22:15:31,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:15:31,962 INFO L85 PathProgramCache]: Analyzing trace with hash -667839448, now seen corresponding path program 2 times [2022-12-13 22:15:31,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:15:31,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898123918] [2022-12-13 22:15:31,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:15:31,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:15:31,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:15:32,017 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 22:15:32,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:15:32,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898123918] [2022-12-13 22:15:32,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898123918] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:15:32,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [434324429] [2022-12-13 22:15:32,018 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 22:15:32,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:15:32,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7865cfd-0ad8-4ac7-b03a-c2aae245a334/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:15:32,019 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7865cfd-0ad8-4ac7-b03a-c2aae245a334/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:15:32,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7865cfd-0ad8-4ac7-b03a-c2aae245a334/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 22:15:32,092 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 22:15:32,092 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 22:15:32,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 22:15:32,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:15:32,112 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-13 22:15:32,112 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:15:32,129 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-13 22:15:32,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [434324429] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:15:32,130 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 22:15:32,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 2, 2] total 5 [2022-12-13 22:15:32,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294482462] [2022-12-13 22:15:32,130 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 22:15:32,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 22:15:32,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:15:32,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 22:15:32,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-13 22:15:32,172 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 486 [2022-12-13 22:15:32,173 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 47 transitions, 216 flow. Second operand has 6 states, 6 states have (on average 231.66666666666666) internal successors, (1390), 6 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:15:32,173 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 22:15:32,173 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 486 [2022-12-13 22:15:32,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 22:15:32,483 INFO L130 PetriNetUnfolder]: 1459/2498 cut-off events. [2022-12-13 22:15:32,483 INFO L131 PetriNetUnfolder]: For 1125/1125 co-relation queries the response was YES. [2022-12-13 22:15:32,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6690 conditions, 2498 events. 1459/2498 cut-off events. For 1125/1125 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 13836 event pairs, 207 based on Foata normal form. 0/2498 useless extension candidates. Maximal degree in co-relation 6672. Up to 738 conditions per place. [2022-12-13 22:15:32,487 INFO L137 encePairwiseOnDemand]: 481/486 looper letters, 0 selfloop transitions, 0 changer transitions 74/74 dead transitions. [2022-12-13 22:15:32,487 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 74 transitions, 445 flow [2022-12-13 22:15:32,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 22:15:32,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 22:15:32,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1412 transitions. [2022-12-13 22:15:32,490 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4842249657064472 [2022-12-13 22:15:32,490 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1412 transitions. [2022-12-13 22:15:32,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1412 transitions. [2022-12-13 22:15:32,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 22:15:32,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1412 transitions. [2022-12-13 22:15:32,493 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 235.33333333333334) internal successors, (1412), 6 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:15:32,495 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 486.0) internal successors, (3402), 7 states have internal predecessors, (3402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:15:32,495 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 486.0) internal successors, (3402), 7 states have internal predecessors, (3402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:15:32,495 INFO L175 Difference]: Start difference. First operand has 52 places, 47 transitions, 216 flow. Second operand 6 states and 1412 transitions. [2022-12-13 22:15:32,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 74 transitions, 445 flow [2022-12-13 22:15:32,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 74 transitions, 426 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-12-13 22:15:32,498 INFO L231 Difference]: Finished difference. Result has 45 places, 0 transitions, 0 flow [2022-12-13 22:15:32,498 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=486, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=45, PETRI_TRANSITIONS=0} [2022-12-13 22:15:32,498 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 9 predicate places. [2022-12-13 22:15:32,499 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 0 transitions, 0 flow [2022-12-13 22:15:32,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 231.66666666666666) internal successors, (1390), 6 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:15:32,501 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 22 remaining) [2022-12-13 22:15:32,501 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 22 remaining) [2022-12-13 22:15:32,501 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 22 remaining) [2022-12-13 22:15:32,501 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 22 remaining) [2022-12-13 22:15:32,501 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 22 remaining) [2022-12-13 22:15:32,501 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 22 remaining) [2022-12-13 22:15:32,502 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 22 remaining) [2022-12-13 22:15:32,502 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 22 remaining) [2022-12-13 22:15:32,502 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 22 remaining) [2022-12-13 22:15:32,502 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 22 remaining) [2022-12-13 22:15:32,502 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 22 remaining) [2022-12-13 22:15:32,502 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 22 remaining) [2022-12-13 22:15:32,502 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 22 remaining) [2022-12-13 22:15:32,502 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 22 remaining) [2022-12-13 22:15:32,502 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 22 remaining) [2022-12-13 22:15:32,502 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 22 remaining) [2022-12-13 22:15:32,502 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 22 remaining) [2022-12-13 22:15:32,503 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 22 remaining) [2022-12-13 22:15:32,503 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 22 remaining) [2022-12-13 22:15:32,503 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 22 remaining) [2022-12-13 22:15:32,503 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 22 remaining) [2022-12-13 22:15:32,503 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 22 remaining) [2022-12-13 22:15:32,507 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7865cfd-0ad8-4ac7-b03a-c2aae245a334/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 22:15:32,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7865cfd-0ad8-4ac7-b03a-c2aae245a334/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-13 22:15:32,705 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:15:32,720 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-13 22:15:32,720 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 22:15:32,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 10:15:32 BasicIcfg [2022-12-13 22:15:32,728 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 22:15:32,730 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 22:15:32,730 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 22:15:32,730 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 22:15:32,731 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:15:09" (3/4) ... [2022-12-13 22:15:32,737 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 22:15:32,746 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-12-13 22:15:32,746 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-12-13 22:15:32,751 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 26 nodes and edges [2022-12-13 22:15:32,751 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-12-13 22:15:32,751 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-12-13 22:15:32,752 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-13 22:15:32,780 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7865cfd-0ad8-4ac7-b03a-c2aae245a334/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 22:15:32,780 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 22:15:32,780 INFO L158 Benchmark]: Toolchain (without parser) took 23755.10ms. Allocated memory was 121.6MB in the beginning and 2.2GB in the end (delta: 2.1GB). Free memory was 85.6MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 926.1MB. Max. memory is 16.1GB. [2022-12-13 22:15:32,781 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 121.6MB. Free memory was 85.5MB in the beginning and 85.5MB in the end (delta: 24.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 22:15:32,781 INFO L158 Benchmark]: CACSL2BoogieTranslator took 187.73ms. Allocated memory is still 121.6MB. Free memory was 85.6MB in the beginning and 74.0MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-12-13 22:15:32,781 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.91ms. Allocated memory is still 121.6MB. Free memory was 73.5MB in the beginning and 71.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 22:15:32,781 INFO L158 Benchmark]: Boogie Preprocessor took 28.85ms. Allocated memory is still 121.6MB. Free memory was 71.9MB in the beginning and 70.2MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 22:15:32,781 INFO L158 Benchmark]: RCFGBuilder took 437.18ms. Allocated memory is still 121.6MB. Free memory was 70.2MB in the beginning and 50.0MB in the end (delta: 20.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-12-13 22:15:32,782 INFO L158 Benchmark]: TraceAbstraction took 23018.53ms. Allocated memory was 121.6MB in the beginning and 2.2GB in the end (delta: 2.1GB). Free memory was 49.3MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 886.3MB. Max. memory is 16.1GB. [2022-12-13 22:15:32,782 INFO L158 Benchmark]: Witness Printer took 50.28ms. Allocated memory is still 2.2GB. Free memory was 1.3GB in the beginning and 1.3GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-13 22:15:32,784 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 121.6MB. Free memory was 85.5MB in the beginning and 85.5MB in the end (delta: 24.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 187.73ms. Allocated memory is still 121.6MB. Free memory was 85.6MB in the beginning and 74.0MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.91ms. Allocated memory is still 121.6MB. Free memory was 73.5MB in the beginning and 71.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.85ms. Allocated memory is still 121.6MB. Free memory was 71.9MB in the beginning and 70.2MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 437.18ms. Allocated memory is still 121.6MB. Free memory was 70.2MB in the beginning and 50.0MB in the end (delta: 20.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 23018.53ms. Allocated memory was 121.6MB in the beginning and 2.2GB in the end (delta: 2.1GB). Free memory was 49.3MB in the beginning and 1.3GB in the end (delta: -1.2GB). Peak memory consumption was 886.3MB. Max. memory is 16.1GB. * Witness Printer took 50.28ms. Allocated memory is still 2.2GB. Free memory was 1.3GB in the beginning and 1.3GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.5s, 201 PlacesBefore, 36 PlacesAfterwards, 212 TransitionsBefore, 36 TransitionsAfterwards, 4028 CoEnabledTransitionPairs, 8 FixpointIterations, 118 TrivialSequentialCompositions, 76 ConcurrentSequentialCompositions, 20 TrivialYvCompositions, 12 ConcurrentYvCompositions, 11 ChoiceCompositions, 237 TotalNumberOfCompositions, 4947 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4342, independent: 4248, independent conditional: 0, independent unconditional: 4248, dependent: 94, dependent conditional: 0, dependent unconditional: 94, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2240, independent: 2222, independent conditional: 0, independent unconditional: 2222, dependent: 18, dependent conditional: 0, dependent unconditional: 18, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4342, independent: 2026, independent conditional: 0, independent unconditional: 2026, dependent: 76, dependent conditional: 0, dependent unconditional: 76, unknown: 2240, unknown conditional: 0, unknown unconditional: 2240] , Statistics on independence cache: Total cache size (in pairs): 94, Positive cache size: 87, Positive conditional cache size: 0, Positive unconditional cache size: 87, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 57]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 57]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 49]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 49]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 77]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 77]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 69]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 69]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 115]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 115]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 115]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 115]: 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, 299 locations, 22 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: 22.9s, OverallIterations: 18, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 13.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3197 SdHoareTripleChecker+Valid, 2.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2541 mSDsluCounter, 674 SdHoareTripleChecker+Invalid, 2.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 613 mSDsCounter, 199 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4753 IncrementalHoareTripleChecker+Invalid, 4952 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 199 mSolverCounterUnsat, 61 mSDtfsCounter, 4753 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 181 GetRequests, 77 SyntacticMatches, 3 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=498occurred in iteration=8, InterpolantAutomatonStates: 98, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 210 NumberOfCodeBlocks, 190 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 214 ConstructedInterpolants, 0 QuantifiedInterpolants, 712 SizeOfPredicates, 13 NumberOfNonLiveVariables, 1161 ConjunctsInSsa, 45 ConjunctsInUnsatCore, 30 InterpolantComputations, 14 PerfectInterpolantSequences, 106/214 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 12 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-13 22:15:32,797 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7865cfd-0ad8-4ac7-b03a-c2aae245a334/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE