./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 38b53e6a 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_6d29141d-b5ab-42e5-bbf0-7027f05a5bfd/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d29141d-b5ab-42e5-bbf0-7027f05a5bfd/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d29141d-b5ab-42e5-bbf0-7027f05a5bfd/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d29141d-b5ab-42e5-bbf0-7027f05a5bfd/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d29141d-b5ab-42e5-bbf0-7027f05a5bfd/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d29141d-b5ab-42e5-bbf0-7027f05a5bfd/bin/uautomizer-ZsLfNo2U6R --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 b869eaba59e8dca8d7cb2d1135193e506b8377811cada7a7f67b6d0824dd2d3d --- 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-38b53e6 [2022-11-25 18:25:53,732 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 18:25:53,734 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 18:25:53,768 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 18:25:53,777 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 18:25:53,779 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 18:25:53,780 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 18:25:53,783 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 18:25:53,787 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 18:25:53,791 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 18:25:53,793 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 18:25:53,795 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 18:25:53,798 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 18:25:53,801 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 18:25:53,803 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 18:25:53,807 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 18:25:53,808 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 18:25:53,812 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 18:25:53,814 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 18:25:53,817 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 18:25:53,824 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 18:25:53,826 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 18:25:53,828 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 18:25:53,835 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 18:25:53,839 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 18:25:53,843 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 18:25:53,843 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 18:25:53,844 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 18:25:53,845 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 18:25:53,848 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 18:25:53,851 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 18:25:53,852 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 18:25:53,853 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 18:25:53,854 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 18:25:53,856 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 18:25:53,857 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 18:25:53,858 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 18:25:53,859 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 18:25:53,859 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 18:25:53,862 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 18:25:53,863 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 18:25:53,864 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d29141d-b5ab-42e5-bbf0-7027f05a5bfd/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-25 18:25:53,890 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 18:25:53,890 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 18:25:53,891 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 18:25:53,891 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 18:25:53,892 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 18:25:53,892 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 18:25:53,893 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 18:25:53,893 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 18:25:53,894 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 18:25:53,894 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 18:25:53,894 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 18:25:53,895 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 18:25:53,895 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 18:25:53,895 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 18:25:53,896 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 18:25:53,896 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 18:25:53,896 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 18:25:53,896 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 18:25:53,897 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 18:25:53,897 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 18:25:53,897 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 18:25:53,897 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 18:25:53,898 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 18:25:53,898 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 18:25:53,898 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 18:25:53,899 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 18:25:53,899 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:25:53,899 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 18:25:53,900 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 18:25:53,900 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 18:25:53,900 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 18:25:53,901 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 18:25:53,901 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 18:25:53,901 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 18:25:53,901 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 18:25:53,902 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 18:25:53,902 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_6d29141d-b5ab-42e5-bbf0-7027f05a5bfd/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d29141d-b5ab-42e5-bbf0-7027f05a5bfd/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b869eaba59e8dca8d7cb2d1135193e506b8377811cada7a7f67b6d0824dd2d3d [2022-11-25 18:25:54,196 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 18:25:54,238 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 18:25:54,241 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 18:25:54,243 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 18:25:54,244 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 18:25:54,245 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d29141d-b5ab-42e5-bbf0-7027f05a5bfd/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c [2022-11-25 18:25:57,461 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 18:25:57,778 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 18:25:57,787 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d29141d-b5ab-42e5-bbf0-7027f05a5bfd/sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c [2022-11-25 18:25:57,799 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d29141d-b5ab-42e5-bbf0-7027f05a5bfd/bin/uautomizer-ZsLfNo2U6R/data/207a14c7d/a0d0f1d78bf84baeabeb5df7d2db47a6/FLAG4d77be676 [2022-11-25 18:25:57,819 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d29141d-b5ab-42e5-bbf0-7027f05a5bfd/bin/uautomizer-ZsLfNo2U6R/data/207a14c7d/a0d0f1d78bf84baeabeb5df7d2db47a6 [2022-11-25 18:25:57,824 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 18:25:57,826 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 18:25:57,827 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 18:25:57,827 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 18:25:57,831 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 18:25:57,832 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:25:57" (1/1) ... [2022-11-25 18:25:57,833 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@438487b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:25:57, skipping insertion in model container [2022-11-25 18:25:57,833 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:25:57" (1/1) ... [2022-11-25 18:25:57,843 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 18:25:57,885 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 18:25:58,073 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_6d29141d-b5ab-42e5-bbf0-7027f05a5bfd/sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c[4929,4942] [2022-11-25 18:25:58,080 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:25:58,090 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 18:25:58,125 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_6d29141d-b5ab-42e5-bbf0-7027f05a5bfd/sv-benchmarks/c/weaver/chl-nzb-file-symm.wvr.c[4929,4942] [2022-11-25 18:25:58,130 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:25:58,144 INFO L208 MainTranslator]: Completed translation [2022-11-25 18:25:58,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:25:58 WrapperNode [2022-11-25 18:25:58,144 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 18:25:58,145 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 18:25:58,145 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 18:25:58,146 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 18:25:58,152 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:25:58" (1/1) ... [2022-11-25 18:25:58,168 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:25:58" (1/1) ... [2022-11-25 18:25:58,214 INFO L138 Inliner]: procedures = 25, calls = 55, calls flagged for inlining = 21, calls inlined = 29, statements flattened = 478 [2022-11-25 18:25:58,214 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 18:25:58,215 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 18:25:58,215 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 18:25:58,215 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 18:25:58,224 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:25:58" (1/1) ... [2022-11-25 18:25:58,225 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:25:58" (1/1) ... [2022-11-25 18:25:58,230 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:25:58" (1/1) ... [2022-11-25 18:25:58,230 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:25:58" (1/1) ... [2022-11-25 18:25:58,243 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:25:58" (1/1) ... [2022-11-25 18:25:58,248 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:25:58" (1/1) ... [2022-11-25 18:25:58,251 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:25:58" (1/1) ... [2022-11-25 18:25:58,253 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:25:58" (1/1) ... [2022-11-25 18:25:58,258 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 18:25:58,259 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 18:25:58,259 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 18:25:58,259 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 18:25:58,260 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:25:58" (1/1) ... [2022-11-25 18:25:58,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:25:58,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d29141d-b5ab-42e5-bbf0-7027f05a5bfd/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:25:58,296 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d29141d-b5ab-42e5-bbf0-7027f05a5bfd/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 18:25:58,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d29141d-b5ab-42e5-bbf0-7027f05a5bfd/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 18:25:58,350 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 18:25:58,350 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 18:25:58,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 18:25:58,351 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 18:25:58,351 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-25 18:25:58,351 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-25 18:25:58,351 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-25 18:25:58,351 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-25 18:25:58,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 18:25:58,352 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 18:25:58,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 18:25:58,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 18:25:58,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 18:25:58,354 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 18:25:58,512 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 18:25:58,514 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 18:25:59,551 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 18:25:59,571 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 18:25:59,571 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-25 18:25:59,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:25:59 BoogieIcfgContainer [2022-11-25 18:25:59,575 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 18:25:59,578 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 18:25:59,578 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 18:25:59,582 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 18:25:59,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:25:57" (1/3) ... [2022-11-25 18:25:59,583 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10443ba4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:25:59, skipping insertion in model container [2022-11-25 18:25:59,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:25:58" (2/3) ... [2022-11-25 18:25:59,584 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10443ba4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:25:59, skipping insertion in model container [2022-11-25 18:25:59,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:25:59" (3/3) ... [2022-11-25 18:25:59,586 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-symm.wvr.c [2022-11-25 18:25:59,597 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 18:25:59,611 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 18:25:59,612 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 42 error locations. [2022-11-25 18:25:59,612 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 18:25:59,814 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-25 18:25:59,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 605 places, 659 transitions, 1334 flow [2022-11-25 18:26:00,370 INFO L130 PetriNetUnfolder]: 61/657 cut-off events. [2022-11-25 18:26:00,371 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 18:26:00,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 666 conditions, 657 events. 61/657 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2386 event pairs, 0 based on Foata normal form. 0/554 useless extension candidates. Maximal degree in co-relation 485. Up to 2 conditions per place. [2022-11-25 18:26:00,396 INFO L82 GeneralOperation]: Start removeDead. Operand has 605 places, 659 transitions, 1334 flow [2022-11-25 18:26:00,422 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 586 places, 639 transitions, 1290 flow [2022-11-25 18:26:00,427 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 18:26:00,453 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 586 places, 639 transitions, 1290 flow [2022-11-25 18:26:00,457 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 586 places, 639 transitions, 1290 flow [2022-11-25 18:26:00,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 586 places, 639 transitions, 1290 flow [2022-11-25 18:26:00,669 INFO L130 PetriNetUnfolder]: 60/639 cut-off events. [2022-11-25 18:26:00,670 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 18:26:00,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 648 conditions, 639 events. 60/639 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2283 event pairs, 0 based on Foata normal form. 0/538 useless extension candidates. Maximal degree in co-relation 485. Up to 2 conditions per place. [2022-11-25 18:26:00,791 INFO L119 LiptonReduction]: Number of co-enabled transitions 119448 [2022-11-25 18:26:57,446 INFO L134 LiptonReduction]: Checked pairs total: 117909 [2022-11-25 18:26:57,446 INFO L136 LiptonReduction]: Total number of compositions: 875 [2022-11-25 18:26:57,464 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 18:26:57,471 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;@73681f60, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:26:57,471 INFO L358 AbstractCegarLoop]: Starting to check reachability of 80 error locations. [2022-11-25 18:26:57,474 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-11-25 18:26:57,475 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 18:26:57,475 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:26:57,476 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-25 18:26:57,476 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-25 18:26:57,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:26:57,483 INFO L85 PathProgramCache]: Analyzing trace with hash 92942, now seen corresponding path program 1 times [2022-11-25 18:26:57,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:26:57,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781724634] [2022-11-25 18:26:57,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:26:57,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:26:57,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:26:57,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:26:57,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:26:57,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781724634] [2022-11-25 18:26:57,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781724634] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:26:57,802 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:26:57,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 18:26:57,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359699918] [2022-11-25 18:26:57,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:26:57,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:26:57,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:26:57,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:26:57,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:26:57,897 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 621 out of 1534 [2022-11-25 18:26:57,906 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 70 transitions, 152 flow. Second operand has 3 states, 3 states have (on average 621.6666666666666) internal successors, (1865), 3 states have internal predecessors, (1865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:26:57,907 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:26:57,907 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 621 of 1534 [2022-11-25 18:26:57,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:26:59,171 INFO L130 PetriNetUnfolder]: 2393/3901 cut-off events. [2022-11-25 18:26:59,172 INFO L131 PetriNetUnfolder]: For 116/116 co-relation queries the response was YES. [2022-11-25 18:26:59,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7936 conditions, 3901 events. 2393/3901 cut-off events. For 116/116 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 22225 event pairs, 2010 based on Foata normal form. 2/1575 useless extension candidates. Maximal degree in co-relation 3816. Up to 1954 conditions per place. [2022-11-25 18:26:59,199 INFO L137 encePairwiseOnDemand]: 1513/1534 looper letters, 103 selfloop transitions, 4 changer transitions 2/109 dead transitions. [2022-11-25 18:26:59,199 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 109 transitions, 460 flow [2022-11-25 18:26:59,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:26:59,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:26:59,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2002 transitions. [2022-11-25 18:26:59,229 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4350282485875706 [2022-11-25 18:26:59,230 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2002 transitions. [2022-11-25 18:26:59,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2002 transitions. [2022-11-25 18:26:59,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:26:59,239 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2002 transitions. [2022-11-25 18:26:59,289 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 667.3333333333334) internal successors, (2002), 3 states have internal predecessors, (2002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:26:59,313 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1534.0) internal successors, (6136), 4 states have internal predecessors, (6136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:26:59,317 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1534.0) internal successors, (6136), 4 states have internal predecessors, (6136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:26:59,319 INFO L175 Difference]: Start difference. First operand has 70 places, 70 transitions, 152 flow. Second operand 3 states and 2002 transitions. [2022-11-25 18:26:59,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 109 transitions, 460 flow [2022-11-25 18:26:59,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 109 transitions, 444 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-25 18:26:59,333 INFO L231 Difference]: Finished difference. Result has 57 places, 59 transitions, 151 flow [2022-11-25 18:26:59,336 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1534, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=151, PETRI_PLACES=57, PETRI_TRANSITIONS=59} [2022-11-25 18:26:59,340 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, -13 predicate places. [2022-11-25 18:26:59,341 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 59 transitions, 151 flow [2022-11-25 18:26:59,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 621.6666666666666) internal successors, (1865), 3 states have internal predecessors, (1865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:26:59,343 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:26:59,343 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-25 18:26:59,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 18:26:59,344 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-25 18:26:59,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:26:59,357 INFO L85 PathProgramCache]: Analyzing trace with hash 2888243, now seen corresponding path program 1 times [2022-11-25 18:26:59,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:26:59,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168660832] [2022-11-25 18:26:59,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:26:59,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:26:59,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:26:59,498 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:26:59,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:26:59,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168660832] [2022-11-25 18:26:59,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168660832] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:26:59,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1415958071] [2022-11-25 18:26:59,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:26:59,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:26:59,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d29141d-b5ab-42e5-bbf0-7027f05a5bfd/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:26:59,504 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d29141d-b5ab-42e5-bbf0-7027f05a5bfd/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:26:59,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d29141d-b5ab-42e5-bbf0-7027f05a5bfd/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 18:26:59,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:26:59,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 18:26:59,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:26:59,823 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:26:59,824 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:26:59,853 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:26:59,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1415958071] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:26:59,853 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 18:26:59,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2022-11-25 18:26:59,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537341776] [2022-11-25 18:26:59,855 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 18:26:59,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 18:26:59,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:26:59,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 18:26:59,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:26:59,936 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 621 out of 1534 [2022-11-25 18:26:59,941 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 59 transitions, 151 flow. Second operand has 7 states, 7 states have (on average 622.1428571428571) internal successors, (4355), 7 states have internal predecessors, (4355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:26:59,941 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:26:59,942 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 621 of 1534 [2022-11-25 18:26:59,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:27:02,726 INFO L130 PetriNetUnfolder]: 5987/9746 cut-off events. [2022-11-25 18:27:02,727 INFO L131 PetriNetUnfolder]: For 65/65 co-relation queries the response was YES. [2022-11-25 18:27:02,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19654 conditions, 9746 events. 5987/9746 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 64511 event pairs, 5025 based on Foata normal form. 0/3936 useless extension candidates. Maximal degree in co-relation 15679. Up to 1951 conditions per place. [2022-11-25 18:27:02,787 INFO L137 encePairwiseOnDemand]: 1526/1534 looper letters, 245 selfloop transitions, 21 changer transitions 0/266 dead transitions. [2022-11-25 18:27:02,787 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 266 transitions, 1145 flow [2022-11-25 18:27:02,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 18:27:02,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-25 18:27:02,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4619 transitions. [2022-11-25 18:27:02,799 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4301545911715403 [2022-11-25 18:27:02,800 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 4619 transitions. [2022-11-25 18:27:02,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 4619 transitions. [2022-11-25 18:27:02,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:27:02,803 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 4619 transitions. [2022-11-25 18:27:02,813 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 659.8571428571429) internal successors, (4619), 7 states have internal predecessors, (4619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:02,880 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1534.0) internal successors, (12272), 8 states have internal predecessors, (12272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:02,887 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1534.0) internal successors, (12272), 8 states have internal predecessors, (12272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:02,887 INFO L175 Difference]: Start difference. First operand has 57 places, 59 transitions, 151 flow. Second operand 7 states and 4619 transitions. [2022-11-25 18:27:02,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 266 transitions, 1145 flow [2022-11-25 18:27:02,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 266 transitions, 1131 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 18:27:02,893 INFO L231 Difference]: Finished difference. Result has 63 places, 74 transitions, 282 flow [2022-11-25 18:27:02,894 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1534, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=282, PETRI_PLACES=63, PETRI_TRANSITIONS=74} [2022-11-25 18:27:02,895 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, -7 predicate places. [2022-11-25 18:27:02,895 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 74 transitions, 282 flow [2022-11-25 18:27:02,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 622.1428571428571) internal successors, (4355), 7 states have internal predecessors, (4355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:02,898 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:27:02,899 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2022-11-25 18:27:02,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d29141d-b5ab-42e5-bbf0-7027f05a5bfd/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 18:27:03,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d29141d-b5ab-42e5-bbf0-7027f05a5bfd/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-25 18:27:03,105 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-25 18:27:03,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:27:03,106 INFO L85 PathProgramCache]: Analyzing trace with hash 89542572, now seen corresponding path program 1 times [2022-11-25 18:27:03,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:27:03,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036228039] [2022-11-25 18:27:03,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:27:03,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:27:03,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:03,216 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:27:03,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:27:03,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036228039] [2022-11-25 18:27:03,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036228039] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:27:03,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1052459447] [2022-11-25 18:27:03,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:27:03,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:27:03,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d29141d-b5ab-42e5-bbf0-7027f05a5bfd/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:27:03,219 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d29141d-b5ab-42e5-bbf0-7027f05a5bfd/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:27:03,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d29141d-b5ab-42e5-bbf0-7027f05a5bfd/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 18:27:03,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:03,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 18:27:03,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:27:03,398 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:27:03,399 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:27:03,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1052459447] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:27:03,399 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:27:03,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-11-25 18:27:03,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637830122] [2022-11-25 18:27:03,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:27:03,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:27:03,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:27:03,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:27:03,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-25 18:27:03,451 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 621 out of 1534 [2022-11-25 18:27:03,458 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 74 transitions, 282 flow. Second operand has 5 states, 5 states have (on average 621.8) internal successors, (3109), 5 states have internal predecessors, (3109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:03,458 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:27:03,458 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 621 of 1534 [2022-11-25 18:27:03,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:27:06,067 INFO L130 PetriNetUnfolder]: 5981/9738 cut-off events. [2022-11-25 18:27:06,067 INFO L131 PetriNetUnfolder]: For 68/68 co-relation queries the response was YES. [2022-11-25 18:27:06,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19656 conditions, 9738 events. 5981/9738 cut-off events. For 68/68 co-relation queries the response was YES. Maximal size of possible extension queue 563. Compared 64464 event pairs, 5025 based on Foata normal form. 2/3938 useless extension candidates. Maximal degree in co-relation 11774. Up to 5842 conditions per place. [2022-11-25 18:27:06,126 INFO L137 encePairwiseOnDemand]: 1528/1534 looper letters, 153 selfloop transitions, 9 changer transitions 0/162 dead transitions. [2022-11-25 18:27:06,126 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 162 transitions, 750 flow [2022-11-25 18:27:06,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:27:06,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 18:27:06,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3265 transitions. [2022-11-25 18:27:06,138 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4256844850065189 [2022-11-25 18:27:06,138 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3265 transitions. [2022-11-25 18:27:06,138 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3265 transitions. [2022-11-25 18:27:06,140 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:27:06,141 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3265 transitions. [2022-11-25 18:27:06,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 653.0) internal successors, (3265), 5 states have internal predecessors, (3265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:06,167 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1534.0) internal successors, (9204), 6 states have internal predecessors, (9204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:06,171 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1534.0) internal successors, (9204), 6 states have internal predecessors, (9204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:06,171 INFO L175 Difference]: Start difference. First operand has 63 places, 74 transitions, 282 flow. Second operand 5 states and 3265 transitions. [2022-11-25 18:27:06,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 162 transitions, 750 flow [2022-11-25 18:27:06,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 162 transitions, 731 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-11-25 18:27:06,178 INFO L231 Difference]: Finished difference. Result has 63 places, 66 transitions, 227 flow [2022-11-25 18:27:06,178 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1534, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=227, PETRI_PLACES=63, PETRI_TRANSITIONS=66} [2022-11-25 18:27:06,180 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, -7 predicate places. [2022-11-25 18:27:06,180 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 66 transitions, 227 flow [2022-11-25 18:27:06,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 621.8) internal successors, (3109), 5 states have internal predecessors, (3109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:06,182 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:27:06,183 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 18:27:06,189 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d29141d-b5ab-42e5-bbf0-7027f05a5bfd/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 18:27:06,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d29141d-b5ab-42e5-bbf0-7027f05a5bfd/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:27:06,389 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-25 18:27:06,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:27:06,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1515874479, now seen corresponding path program 1 times [2022-11-25 18:27:06,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:27:06,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778841476] [2022-11-25 18:27:06,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:27:06,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:27:06,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:06,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:27:06,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:27:06,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778841476] [2022-11-25 18:27:06,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778841476] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:27:06,559 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:27:06,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:27:06,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476998019] [2022-11-25 18:27:06,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:27:06,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:27:06,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:27:06,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:27:06,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:27:06,601 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 619 out of 1534 [2022-11-25 18:27:06,604 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 66 transitions, 227 flow. Second operand has 3 states, 3 states have (on average 620.6666666666666) internal successors, (1862), 3 states have internal predecessors, (1862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:06,605 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:27:06,605 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 619 of 1534 [2022-11-25 18:27:06,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:27:08,116 INFO L130 PetriNetUnfolder]: 4785/7793 cut-off events. [2022-11-25 18:27:08,116 INFO L131 PetriNetUnfolder]: For 60/60 co-relation queries the response was YES. [2022-11-25 18:27:08,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15739 conditions, 7793 events. 4785/7793 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 512. Compared 50093 event pairs, 4020 based on Foata normal form. 2/3155 useless extension candidates. Maximal degree in co-relation 15665. Up to 7789 conditions per place. [2022-11-25 18:27:08,156 INFO L137 encePairwiseOnDemand]: 1529/1534 looper letters, 58 selfloop transitions, 7 changer transitions 0/65 dead transitions. [2022-11-25 18:27:08,156 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 65 transitions, 353 flow [2022-11-25 18:27:08,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:27:08,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:27:08,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1915 transitions. [2022-11-25 18:27:08,163 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4161234245980009 [2022-11-25 18:27:08,163 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1915 transitions. [2022-11-25 18:27:08,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1915 transitions. [2022-11-25 18:27:08,164 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:27:08,165 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1915 transitions. [2022-11-25 18:27:08,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 638.3333333333334) internal successors, (1915), 3 states have internal predecessors, (1915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:08,194 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1534.0) internal successors, (6136), 4 states have internal predecessors, (6136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:08,196 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1534.0) internal successors, (6136), 4 states have internal predecessors, (6136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:08,196 INFO L175 Difference]: Start difference. First operand has 63 places, 66 transitions, 227 flow. Second operand 3 states and 1915 transitions. [2022-11-25 18:27:08,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 65 transitions, 353 flow [2022-11-25 18:27:08,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 65 transitions, 340 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-25 18:27:08,201 INFO L231 Difference]: Finished difference. Result has 63 places, 65 transitions, 233 flow [2022-11-25 18:27:08,201 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1534, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=233, PETRI_PLACES=63, PETRI_TRANSITIONS=65} [2022-11-25 18:27:08,204 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, -7 predicate places. [2022-11-25 18:27:08,204 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 65 transitions, 233 flow [2022-11-25 18:27:08,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 620.6666666666666) internal successors, (1862), 3 states have internal predecessors, (1862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:08,205 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:27:08,205 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2022-11-25 18:27:08,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 18:27:08,206 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-25 18:27:08,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:27:08,206 INFO L85 PathProgramCache]: Analyzing trace with hash 151293006, now seen corresponding path program 2 times [2022-11-25 18:27:08,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:27:08,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113084355] [2022-11-25 18:27:08,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:27:08,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:27:08,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:08,368 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:27:08,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:27:08,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113084355] [2022-11-25 18:27:08,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113084355] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:27:08,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [206776208] [2022-11-25 18:27:08,373 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 18:27:08,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:27:08,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d29141d-b5ab-42e5-bbf0-7027f05a5bfd/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:27:08,375 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d29141d-b5ab-42e5-bbf0-7027f05a5bfd/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:27:08,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d29141d-b5ab-42e5-bbf0-7027f05a5bfd/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 18:27:08,540 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-25 18:27:08,540 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:27:08,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 18:27:08,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:27:08,567 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-25 18:27:08,567 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:27:08,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [206776208] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:27:08,568 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:27:08,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2022-11-25 18:27:08,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468500577] [2022-11-25 18:27:08,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:27:08,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:27:08,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:27:08,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:27:08,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-25 18:27:08,594 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 623 out of 1534 [2022-11-25 18:27:08,596 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 65 transitions, 233 flow. Second operand has 3 states, 3 states have (on average 624.0) internal successors, (1872), 3 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:08,596 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:27:08,596 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 623 of 1534 [2022-11-25 18:27:08,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:27:10,058 INFO L130 PetriNetUnfolder]: 4785/7791 cut-off events. [2022-11-25 18:27:10,058 INFO L131 PetriNetUnfolder]: For 73/73 co-relation queries the response was YES. [2022-11-25 18:27:10,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15734 conditions, 7791 events. 4785/7791 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 504. Compared 50115 event pairs, 4020 based on Foata normal form. 2/3153 useless extension candidates. Maximal degree in co-relation 15673. Up to 7791 conditions per place. [2022-11-25 18:27:10,110 INFO L137 encePairwiseOnDemand]: 1531/1534 looper letters, 62 selfloop transitions, 1 changer transitions 0/63 dead transitions. [2022-11-25 18:27:10,111 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 63 transitions, 339 flow [2022-11-25 18:27:10,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:27:10,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:27:10,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1923 transitions. [2022-11-25 18:27:10,119 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4178617992177314 [2022-11-25 18:27:10,119 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1923 transitions. [2022-11-25 18:27:10,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1923 transitions. [2022-11-25 18:27:10,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:27:10,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1923 transitions. [2022-11-25 18:27:10,127 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 641.0) internal successors, (1923), 3 states have internal predecessors, (1923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:10,138 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1534.0) internal successors, (6136), 4 states have internal predecessors, (6136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:10,140 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1534.0) internal successors, (6136), 4 states have internal predecessors, (6136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:10,140 INFO L175 Difference]: Start difference. First operand has 63 places, 65 transitions, 233 flow. Second operand 3 states and 1923 transitions. [2022-11-25 18:27:10,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 63 transitions, 339 flow [2022-11-25 18:27:10,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 63 transitions, 299 flow, removed 2 selfloop flow, removed 6 redundant places. [2022-11-25 18:27:10,146 INFO L231 Difference]: Finished difference. Result has 57 places, 63 transitions, 175 flow [2022-11-25 18:27:10,146 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1534, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=175, PETRI_PLACES=57, PETRI_TRANSITIONS=63} [2022-11-25 18:27:10,149 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, -13 predicate places. [2022-11-25 18:27:10,150 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 63 transitions, 175 flow [2022-11-25 18:27:10,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 624.0) internal successors, (1872), 3 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:10,151 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:27:10,151 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:27:10,162 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d29141d-b5ab-42e5-bbf0-7027f05a5bfd/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 18:27:10,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d29141d-b5ab-42e5-bbf0-7027f05a5bfd/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:27:10,357 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-25 18:27:10,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:27:10,357 INFO L85 PathProgramCache]: Analyzing trace with hash 496788530, now seen corresponding path program 1 times [2022-11-25 18:27:10,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:27:10,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479115192] [2022-11-25 18:27:10,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:27:10,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:27:10,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:10,480 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 18:27:10,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:27:10,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479115192] [2022-11-25 18:27:10,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479115192] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:27:10,483 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:27:10,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 18:27:10,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367991326] [2022-11-25 18:27:10,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:27:10,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:27:10,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:27:10,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:27:10,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:27:10,497 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 625 out of 1534 [2022-11-25 18:27:10,500 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 63 transitions, 175 flow. Second operand has 3 states, 3 states have (on average 627.3333333333334) internal successors, (1882), 3 states have internal predecessors, (1882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:10,501 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:27:10,501 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 625 of 1534 [2022-11-25 18:27:10,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:27:11,723 INFO L130 PetriNetUnfolder]: 4301/6995 cut-off events. [2022-11-25 18:27:11,723 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2022-11-25 18:27:11,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14115 conditions, 6995 events. 4301/6995 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 44060 event pairs, 3576 based on Foata normal form. 0/2899 useless extension candidates. Maximal degree in co-relation 14106. Up to 6995 conditions per place. [2022-11-25 18:27:11,765 INFO L137 encePairwiseOnDemand]: 1531/1534 looper letters, 60 selfloop transitions, 1 changer transitions 0/61 dead transitions. [2022-11-25 18:27:11,765 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 61 transitions, 293 flow [2022-11-25 18:27:11,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:27:11,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:27:11,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1927 transitions. [2022-11-25 18:27:11,774 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4187309865275967 [2022-11-25 18:27:11,774 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1927 transitions. [2022-11-25 18:27:11,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1927 transitions. [2022-11-25 18:27:11,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:27:11,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1927 transitions. [2022-11-25 18:27:11,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 642.3333333333334) internal successors, (1927), 3 states have internal predecessors, (1927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:11,793 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1534.0) internal successors, (6136), 4 states have internal predecessors, (6136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:11,796 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1534.0) internal successors, (6136), 4 states have internal predecessors, (6136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:11,796 INFO L175 Difference]: Start difference. First operand has 57 places, 63 transitions, 175 flow. Second operand 3 states and 1927 transitions. [2022-11-25 18:27:11,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 61 transitions, 293 flow [2022-11-25 18:27:11,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 61 transitions, 292 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 18:27:11,799 INFO L231 Difference]: Finished difference. Result has 56 places, 61 transitions, 172 flow [2022-11-25 18:27:11,800 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1534, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=54, 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=172, PETRI_PLACES=56, PETRI_TRANSITIONS=61} [2022-11-25 18:27:11,800 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, -14 predicate places. [2022-11-25 18:27:11,801 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 61 transitions, 172 flow [2022-11-25 18:27:11,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 627.3333333333334) internal successors, (1882), 3 states have internal predecessors, (1882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:11,802 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:27:11,802 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:27:11,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 18:27:11,803 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-25 18:27:11,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:27:11,803 INFO L85 PathProgramCache]: Analyzing trace with hash 496788590, now seen corresponding path program 1 times [2022-11-25 18:27:11,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:27:11,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914306914] [2022-11-25 18:27:11,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:27:11,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:27:11,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:11,911 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 18:27:11,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:27:11,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914306914] [2022-11-25 18:27:11,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914306914] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:27:11,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1226830134] [2022-11-25 18:27:11,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:27:11,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:27:11,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d29141d-b5ab-42e5-bbf0-7027f05a5bfd/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:27:11,914 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d29141d-b5ab-42e5-bbf0-7027f05a5bfd/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:27:11,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d29141d-b5ab-42e5-bbf0-7027f05a5bfd/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 18:27:12,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:12,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 18:27:12,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:27:12,138 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 18:27:12,138 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:27:12,157 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 18:27:12,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1226830134] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:27:12,158 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 18:27:12,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2022-11-25 18:27:12,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104453464] [2022-11-25 18:27:12,159 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 18:27:12,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 18:27:12,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:27:12,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 18:27:12,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-11-25 18:27:12,295 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 615 out of 1534 [2022-11-25 18:27:12,302 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 61 transitions, 172 flow. Second operand has 8 states, 8 states have (on average 616.625) internal successors, (4933), 8 states have internal predecessors, (4933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:12,302 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:27:12,303 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 615 of 1534 [2022-11-25 18:27:12,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:27:12,926 INFO L130 PetriNetUnfolder]: 1076/1757 cut-off events. [2022-11-25 18:27:12,926 INFO L131 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2022-11-25 18:27:12,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3562 conditions, 1757 events. 1076/1757 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 8484 event pairs, 894 based on Foata normal form. 6/739 useless extension candidates. Maximal degree in co-relation 3552. Up to 1750 conditions per place. [2022-11-25 18:27:12,934 INFO L137 encePairwiseOnDemand]: 1529/1534 looper letters, 48 selfloop transitions, 10 changer transitions 0/58 dead transitions. [2022-11-25 18:27:12,934 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 58 transitions, 271 flow [2022-11-25 18:27:12,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 18:27:12,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 18:27:12,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3754 transitions. [2022-11-25 18:27:12,947 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.40786614515428077 [2022-11-25 18:27:12,948 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 3754 transitions. [2022-11-25 18:27:12,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 3754 transitions. [2022-11-25 18:27:12,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:27:12,951 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 3754 transitions. [2022-11-25 18:27:12,960 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 625.6666666666666) internal successors, (3754), 6 states have internal predecessors, (3754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:12,978 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1534.0) internal successors, (10738), 7 states have internal predecessors, (10738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:12,981 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1534.0) internal successors, (10738), 7 states have internal predecessors, (10738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:12,982 INFO L175 Difference]: Start difference. First operand has 56 places, 61 transitions, 172 flow. Second operand 6 states and 3754 transitions. [2022-11-25 18:27:12,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 58 transitions, 271 flow [2022-11-25 18:27:12,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 58 transitions, 270 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 18:27:12,984 INFO L231 Difference]: Finished difference. Result has 63 places, 58 transitions, 192 flow [2022-11-25 18:27:12,985 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1534, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=192, PETRI_PLACES=63, PETRI_TRANSITIONS=58} [2022-11-25 18:27:12,985 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, -7 predicate places. [2022-11-25 18:27:12,985 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 58 transitions, 192 flow [2022-11-25 18:27:12,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 616.625) internal successors, (4933), 8 states have internal predecessors, (4933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:12,988 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:27:12,988 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1] [2022-11-25 18:27:13,000 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d29141d-b5ab-42e5-bbf0-7027f05a5bfd/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-25 18:27:13,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d29141d-b5ab-42e5-bbf0-7027f05a5bfd/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-25 18:27:13,194 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-25 18:27:13,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:27:13,194 INFO L85 PathProgramCache]: Analyzing trace with hash 203229973, now seen corresponding path program 2 times [2022-11-25 18:27:13,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:27:13,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664489002] [2022-11-25 18:27:13,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:27:13,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:27:13,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:13,355 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-25 18:27:13,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:27:13,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664489002] [2022-11-25 18:27:13,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664489002] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:27:13,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12205274] [2022-11-25 18:27:13,356 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 18:27:13,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:27:13,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d29141d-b5ab-42e5-bbf0-7027f05a5bfd/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:27:13,358 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d29141d-b5ab-42e5-bbf0-7027f05a5bfd/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:27:13,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d29141d-b5ab-42e5-bbf0-7027f05a5bfd/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 18:27:13,571 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-25 18:27:13,571 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:27:13,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 18:27:13,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:27:13,600 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-25 18:27:13,601 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:27:13,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [12205274] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:27:13,601 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:27:13,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [6] total 7 [2022-11-25 18:27:13,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303138127] [2022-11-25 18:27:13,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:27:13,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:27:13,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:27:13,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:27:13,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-25 18:27:13,611 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 625 out of 1534 [2022-11-25 18:27:13,613 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 58 transitions, 192 flow. Second operand has 3 states, 3 states have (on average 627.3333333333334) internal successors, (1882), 3 states have internal predecessors, (1882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:13,613 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:27:13,613 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 625 of 1534 [2022-11-25 18:27:13,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:27:14,032 INFO L130 PetriNetUnfolder]: 961/1568 cut-off events. [2022-11-25 18:27:14,032 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2022-11-25 18:27:14,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3205 conditions, 1568 events. 961/1568 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 7456 event pairs, 789 based on Foata normal form. 0/672 useless extension candidates. Maximal degree in co-relation 3191. Up to 1568 conditions per place. [2022-11-25 18:27:14,040 INFO L137 encePairwiseOnDemand]: 1531/1534 looper letters, 55 selfloop transitions, 1 changer transitions 0/56 dead transitions. [2022-11-25 18:27:14,041 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 56 transitions, 300 flow [2022-11-25 18:27:14,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:27:14,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:27:14,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1925 transitions. [2022-11-25 18:27:14,047 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41829639287266407 [2022-11-25 18:27:14,047 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1925 transitions. [2022-11-25 18:27:14,048 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1925 transitions. [2022-11-25 18:27:14,049 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:27:14,050 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1925 transitions. [2022-11-25 18:27:14,055 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 641.6666666666666) internal successors, (1925), 3 states have internal predecessors, (1925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:14,063 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1534.0) internal successors, (6136), 4 states have internal predecessors, (6136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:14,066 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1534.0) internal successors, (6136), 4 states have internal predecessors, (6136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:14,066 INFO L175 Difference]: Start difference. First operand has 63 places, 58 transitions, 192 flow. Second operand 3 states and 1925 transitions. [2022-11-25 18:27:14,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 56 transitions, 300 flow [2022-11-25 18:27:14,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 56 transitions, 280 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-25 18:27:14,069 INFO L231 Difference]: Finished difference. Result has 58 places, 56 transitions, 170 flow [2022-11-25 18:27:14,069 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1534, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=170, PETRI_PLACES=58, PETRI_TRANSITIONS=56} [2022-11-25 18:27:14,070 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, -12 predicate places. [2022-11-25 18:27:14,070 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 56 transitions, 170 flow [2022-11-25 18:27:14,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 627.3333333333334) internal successors, (1882), 3 states have internal predecessors, (1882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:14,071 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:27:14,071 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1] [2022-11-25 18:27:14,084 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d29141d-b5ab-42e5-bbf0-7027f05a5bfd/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-25 18:27:14,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d29141d-b5ab-42e5-bbf0-7027f05a5bfd/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:27:14,278 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-25 18:27:14,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:27:14,278 INFO L85 PathProgramCache]: Analyzing trace with hash 203229969, now seen corresponding path program 1 times [2022-11-25 18:27:14,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:27:14,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835616297] [2022-11-25 18:27:14,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:27:14,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:27:14,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:14,418 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-25 18:27:14,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:27:14,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835616297] [2022-11-25 18:27:14,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835616297] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:27:14,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266475427] [2022-11-25 18:27:14,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:27:14,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:27:14,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d29141d-b5ab-42e5-bbf0-7027f05a5bfd/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:27:14,421 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d29141d-b5ab-42e5-bbf0-7027f05a5bfd/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:27:14,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d29141d-b5ab-42e5-bbf0-7027f05a5bfd/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-25 18:27:14,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:14,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-25 18:27:14,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:27:14,730 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-25 18:27:14,730 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:27:14,793 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-25 18:27:14,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [266475427] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:27:14,794 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 18:27:14,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-11-25 18:27:14,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479909181] [2022-11-25 18:27:14,794 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 18:27:14,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-25 18:27:14,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:27:14,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-25 18:27:14,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2022-11-25 18:27:14,953 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 615 out of 1534 [2022-11-25 18:27:14,959 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 56 transitions, 170 flow. Second operand has 13 states, 13 states have (on average 616.3846153846154) internal successors, (8013), 13 states have internal predecessors, (8013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:14,960 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:27:14,960 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 615 of 1534 [2022-11-25 18:27:14,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:27:15,495 INFO L130 PetriNetUnfolder]: 961/1570 cut-off events. [2022-11-25 18:27:15,496 INFO L131 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2022-11-25 18:27:15,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3202 conditions, 1570 events. 961/1570 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 7367 event pairs, 789 based on Foata normal form. 2/676 useless extension candidates. Maximal degree in co-relation 3188. Up to 1561 conditions per place. [2022-11-25 18:27:15,504 INFO L137 encePairwiseOnDemand]: 1529/1534 looper letters, 46 selfloop transitions, 12 changer transitions 0/58 dead transitions. [2022-11-25 18:27:15,504 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 58 transitions, 294 flow [2022-11-25 18:27:15,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 18:27:15,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-25 18:27:15,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4365 transitions. [2022-11-25 18:27:15,519 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4065002793816353 [2022-11-25 18:27:15,519 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 4365 transitions. [2022-11-25 18:27:15,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 4365 transitions. [2022-11-25 18:27:15,522 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:27:15,522 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 4365 transitions. [2022-11-25 18:27:15,531 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 623.5714285714286) internal successors, (4365), 7 states have internal predecessors, (4365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:15,544 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1534.0) internal successors, (12272), 8 states have internal predecessors, (12272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:15,548 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1534.0) internal successors, (12272), 8 states have internal predecessors, (12272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:15,548 INFO L175 Difference]: Start difference. First operand has 58 places, 56 transitions, 170 flow. Second operand 7 states and 4365 transitions. [2022-11-25 18:27:15,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 58 transitions, 294 flow [2022-11-25 18:27:15,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 58 transitions, 293 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 18:27:15,551 INFO L231 Difference]: Finished difference. Result has 64 places, 58 transitions, 211 flow [2022-11-25 18:27:15,551 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1534, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=211, PETRI_PLACES=64, PETRI_TRANSITIONS=58} [2022-11-25 18:27:15,552 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, -6 predicate places. [2022-11-25 18:27:15,552 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 58 transitions, 211 flow [2022-11-25 18:27:15,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 616.3846153846154) internal successors, (8013), 13 states have internal predecessors, (8013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:15,555 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:27:15,555 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1] [2022-11-25 18:27:15,562 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d29141d-b5ab-42e5-bbf0-7027f05a5bfd/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-25 18:27:15,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d29141d-b5ab-42e5-bbf0-7027f05a5bfd/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:27:15,762 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err17ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-25 18:27:15,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:27:15,762 INFO L85 PathProgramCache]: Analyzing trace with hash 2061693869, now seen corresponding path program 1 times [2022-11-25 18:27:15,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:27:15,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241355124] [2022-11-25 18:27:15,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:27:15,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:27:15,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:15,876 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-25 18:27:15,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:27:15,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241355124] [2022-11-25 18:27:15,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241355124] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:27:15,877 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:27:15,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 18:27:15,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953514620] [2022-11-25 18:27:15,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:27:15,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:27:15,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:27:15,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:27:15,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:27:15,887 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 625 out of 1534 [2022-11-25 18:27:15,889 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 58 transitions, 211 flow. Second operand has 3 states, 3 states have (on average 627.3333333333334) internal successors, (1882), 3 states have internal predecessors, (1882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:15,889 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:27:15,889 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 625 of 1534 [2022-11-25 18:27:15,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:27:16,252 INFO L130 PetriNetUnfolder]: 852/1391 cut-off events. [2022-11-25 18:27:16,252 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2022-11-25 18:27:16,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2861 conditions, 1391 events. 852/1391 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 6310 event pairs, 690 based on Foata normal form. 0/615 useless extension candidates. Maximal degree in co-relation 2845. Up to 1391 conditions per place. [2022-11-25 18:27:16,258 INFO L137 encePairwiseOnDemand]: 1531/1534 looper letters, 55 selfloop transitions, 1 changer transitions 0/56 dead transitions. [2022-11-25 18:27:16,258 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 56 transitions, 319 flow [2022-11-25 18:27:16,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:27:16,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:27:16,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1923 transitions. [2022-11-25 18:27:16,263 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4178617992177314 [2022-11-25 18:27:16,263 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1923 transitions. [2022-11-25 18:27:16,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1923 transitions. [2022-11-25 18:27:16,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:27:16,265 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1923 transitions. [2022-11-25 18:27:16,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 641.0) internal successors, (1923), 3 states have internal predecessors, (1923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:16,274 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1534.0) internal successors, (6136), 4 states have internal predecessors, (6136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:16,275 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1534.0) internal successors, (6136), 4 states have internal predecessors, (6136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:16,276 INFO L175 Difference]: Start difference. First operand has 64 places, 58 transitions, 211 flow. Second operand 3 states and 1923 transitions. [2022-11-25 18:27:16,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 56 transitions, 319 flow [2022-11-25 18:27:16,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 56 transitions, 299 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-11-25 18:27:16,278 INFO L231 Difference]: Finished difference. Result has 60 places, 56 transitions, 189 flow [2022-11-25 18:27:16,278 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1534, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=189, PETRI_PLACES=60, PETRI_TRANSITIONS=56} [2022-11-25 18:27:16,279 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, -10 predicate places. [2022-11-25 18:27:16,279 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 56 transitions, 189 flow [2022-11-25 18:27:16,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 627.3333333333334) internal successors, (1882), 3 states have internal predecessors, (1882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:16,280 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:27:16,280 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1] [2022-11-25 18:27:16,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 18:27:16,281 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-25 18:27:16,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:27:16,281 INFO L85 PathProgramCache]: Analyzing trace with hash 2061693866, now seen corresponding path program 2 times [2022-11-25 18:27:16,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:27:16,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588579250] [2022-11-25 18:27:16,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:27:16,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:27:16,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:16,358 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-25 18:27:16,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:27:16,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588579250] [2022-11-25 18:27:16,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588579250] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:27:16,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:27:16,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 18:27:16,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026260092] [2022-11-25 18:27:16,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:27:16,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:27:16,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:27:16,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:27:16,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:27:16,369 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 625 out of 1534 [2022-11-25 18:27:16,370 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 56 transitions, 189 flow. Second operand has 3 states, 3 states have (on average 627.3333333333334) internal successors, (1882), 3 states have internal predecessors, (1882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:16,371 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:27:16,371 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 625 of 1534 [2022-11-25 18:27:16,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:27:16,746 INFO L130 PetriNetUnfolder]: 749/1222 cut-off events. [2022-11-25 18:27:16,746 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2022-11-25 18:27:16,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2514 conditions, 1222 events. 749/1222 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 5298 event pairs, 597 based on Foata normal form. 0/558 useless extension candidates. Maximal degree in co-relation 2497. Up to 1222 conditions per place. [2022-11-25 18:27:16,751 INFO L137 encePairwiseOnDemand]: 1531/1534 looper letters, 53 selfloop transitions, 1 changer transitions 0/54 dead transitions. [2022-11-25 18:27:16,752 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 54 transitions, 293 flow [2022-11-25 18:27:16,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:27:16,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:27:16,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1921 transitions. [2022-11-25 18:27:16,756 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4174272055627988 [2022-11-25 18:27:16,757 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1921 transitions. [2022-11-25 18:27:16,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1921 transitions. [2022-11-25 18:27:16,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:27:16,758 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1921 transitions. [2022-11-25 18:27:16,762 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 640.3333333333334) internal successors, (1921), 3 states have internal predecessors, (1921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:16,768 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1534.0) internal successors, (6136), 4 states have internal predecessors, (6136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:16,770 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1534.0) internal successors, (6136), 4 states have internal predecessors, (6136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:16,770 INFO L175 Difference]: Start difference. First operand has 60 places, 56 transitions, 189 flow. Second operand 3 states and 1921 transitions. [2022-11-25 18:27:16,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 54 transitions, 293 flow [2022-11-25 18:27:16,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 54 transitions, 292 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 18:27:16,773 INFO L231 Difference]: Finished difference. Result has 59 places, 54 transitions, 186 flow [2022-11-25 18:27:16,773 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1534, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=186, PETRI_PLACES=59, PETRI_TRANSITIONS=54} [2022-11-25 18:27:16,773 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, -11 predicate places. [2022-11-25 18:27:16,774 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 54 transitions, 186 flow [2022-11-25 18:27:16,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 627.3333333333334) internal successors, (1882), 3 states have internal predecessors, (1882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:16,774 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:27:16,775 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1] [2022-11-25 18:27:16,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-25 18:27:16,775 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-25 18:27:16,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:27:16,776 INFO L85 PathProgramCache]: Analyzing trace with hash -511999817, now seen corresponding path program 1 times [2022-11-25 18:27:16,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:27:16,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794455051] [2022-11-25 18:27:16,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:27:16,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:27:16,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:16,851 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-25 18:27:16,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:27:16,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794455051] [2022-11-25 18:27:16,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794455051] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:27:16,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:27:16,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 18:27:16,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384733085] [2022-11-25 18:27:16,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:27:16,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:27:16,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:27:16,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:27:16,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:27:16,861 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 625 out of 1534 [2022-11-25 18:27:16,863 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 54 transitions, 186 flow. Second operand has 3 states, 3 states have (on average 627.6666666666666) internal successors, (1883), 3 states have internal predecessors, (1883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:16,863 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:27:16,863 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 625 of 1534 [2022-11-25 18:27:16,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:27:17,213 INFO L130 PetriNetUnfolder]: 652/1063 cut-off events. [2022-11-25 18:27:17,213 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2022-11-25 18:27:17,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2196 conditions, 1063 events. 652/1063 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 4428 event pairs, 510 based on Foata normal form. 0/503 useless extension candidates. Maximal degree in co-relation 2178. Up to 1063 conditions per place. [2022-11-25 18:27:17,218 INFO L137 encePairwiseOnDemand]: 1531/1534 looper letters, 51 selfloop transitions, 1 changer transitions 0/52 dead transitions. [2022-11-25 18:27:17,219 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 52 transitions, 286 flow [2022-11-25 18:27:17,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:27:17,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:27:17,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1919 transitions. [2022-11-25 18:27:17,223 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41699261190786613 [2022-11-25 18:27:17,224 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1919 transitions. [2022-11-25 18:27:17,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1919 transitions. [2022-11-25 18:27:17,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:27:17,225 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1919 transitions. [2022-11-25 18:27:17,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 639.6666666666666) internal successors, (1919), 3 states have internal predecessors, (1919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:17,234 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1534.0) internal successors, (6136), 4 states have internal predecessors, (6136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:17,236 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1534.0) internal successors, (6136), 4 states have internal predecessors, (6136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:17,236 INFO L175 Difference]: Start difference. First operand has 59 places, 54 transitions, 186 flow. Second operand 3 states and 1919 transitions. [2022-11-25 18:27:17,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 52 transitions, 286 flow [2022-11-25 18:27:17,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 52 transitions, 285 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 18:27:17,238 INFO L231 Difference]: Finished difference. Result has 58 places, 52 transitions, 183 flow [2022-11-25 18:27:17,238 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1534, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=56, 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=183, PETRI_PLACES=58, PETRI_TRANSITIONS=52} [2022-11-25 18:27:17,239 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, -12 predicate places. [2022-11-25 18:27:17,239 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 52 transitions, 183 flow [2022-11-25 18:27:17,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 627.6666666666666) internal successors, (1883), 3 states have internal predecessors, (1883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:17,240 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:27:17,240 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1] [2022-11-25 18:27:17,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-25 18:27:17,241 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-25 18:27:17,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:27:17,241 INFO L85 PathProgramCache]: Analyzing trace with hash -511999760, now seen corresponding path program 1 times [2022-11-25 18:27:17,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:27:17,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427877868] [2022-11-25 18:27:17,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:27:17,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:27:17,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:17,310 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-25 18:27:17,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:27:17,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427877868] [2022-11-25 18:27:17,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427877868] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:27:17,311 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:27:17,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:27:17,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549374372] [2022-11-25 18:27:17,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:27:17,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:27:17,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:27:17,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:27:17,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:27:17,355 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 619 out of 1534 [2022-11-25 18:27:17,357 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 52 transitions, 183 flow. Second operand has 3 states, 3 states have (on average 621.6666666666666) internal successors, (1865), 3 states have internal predecessors, (1865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:17,357 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:27:17,357 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 619 of 1534 [2022-11-25 18:27:17,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:27:17,807 INFO L130 PetriNetUnfolder]: 971/1580 cut-off events. [2022-11-25 18:27:17,808 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2022-11-25 18:27:17,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3240 conditions, 1580 events. 971/1580 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 6739 event pairs, 510 based on Foata normal form. 0/820 useless extension candidates. Maximal degree in co-relation 3221. Up to 1064 conditions per place. [2022-11-25 18:27:17,817 INFO L137 encePairwiseOnDemand]: 1523/1534 looper letters, 75 selfloop transitions, 2 changer transitions 0/77 dead transitions. [2022-11-25 18:27:17,817 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 77 transitions, 389 flow [2022-11-25 18:27:17,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:27:17,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:27:17,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1933 transitions. [2022-11-25 18:27:17,822 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4200347674923946 [2022-11-25 18:27:17,822 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1933 transitions. [2022-11-25 18:27:17,822 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1933 transitions. [2022-11-25 18:27:17,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:27:17,824 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1933 transitions. [2022-11-25 18:27:17,827 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 644.3333333333334) internal successors, (1933), 3 states have internal predecessors, (1933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:17,832 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1534.0) internal successors, (6136), 4 states have internal predecessors, (6136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:17,833 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1534.0) internal successors, (6136), 4 states have internal predecessors, (6136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:17,833 INFO L175 Difference]: Start difference. First operand has 58 places, 52 transitions, 183 flow. Second operand 3 states and 1933 transitions. [2022-11-25 18:27:17,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 77 transitions, 389 flow [2022-11-25 18:27:17,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 77 transitions, 388 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 18:27:17,836 INFO L231 Difference]: Finished difference. Result has 60 places, 53 transitions, 210 flow [2022-11-25 18:27:17,836 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1534, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=210, PETRI_PLACES=60, PETRI_TRANSITIONS=53} [2022-11-25 18:27:17,837 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, -10 predicate places. [2022-11-25 18:27:17,837 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 53 transitions, 210 flow [2022-11-25 18:27:17,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 621.6666666666666) internal successors, (1865), 3 states have internal predecessors, (1865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:17,838 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:27:17,838 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:27:17,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-25 18:27:17,838 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-25 18:27:17,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:27:17,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1882479284, now seen corresponding path program 1 times [2022-11-25 18:27:17,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:27:17,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464748942] [2022-11-25 18:27:17,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:27:17,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:27:17,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:17,944 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-25 18:27:17,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:27:17,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464748942] [2022-11-25 18:27:17,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464748942] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:27:17,945 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:27:17,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 18:27:17,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692366180] [2022-11-25 18:27:17,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:27:17,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:27:17,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:27:17,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:27:17,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:27:17,953 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 625 out of 1534 [2022-11-25 18:27:17,955 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 53 transitions, 210 flow. Second operand has 3 states, 3 states have (on average 628.3333333333334) internal successors, (1885), 3 states have internal predecessors, (1885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:17,955 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:27:17,956 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 625 of 1534 [2022-11-25 18:27:17,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:27:18,269 INFO L130 PetriNetUnfolder]: 849/1380 cut-off events. [2022-11-25 18:27:18,269 INFO L131 PetriNetUnfolder]: For 75/75 co-relation queries the response was YES. [2022-11-25 18:27:18,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3056 conditions, 1380 events. 849/1380 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 5505 event pairs, 659 based on Foata normal form. 0/812 useless extension candidates. Maximal degree in co-relation 3036. Up to 1380 conditions per place. [2022-11-25 18:27:18,275 INFO L137 encePairwiseOnDemand]: 1531/1534 looper letters, 50 selfloop transitions, 1 changer transitions 0/51 dead transitions. [2022-11-25 18:27:18,275 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 51 transitions, 306 flow [2022-11-25 18:27:18,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:27:18,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:27:18,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1917 transitions. [2022-11-25 18:27:18,280 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4165580182529335 [2022-11-25 18:27:18,280 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1917 transitions. [2022-11-25 18:27:18,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1917 transitions. [2022-11-25 18:27:18,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:27:18,281 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1917 transitions. [2022-11-25 18:27:18,284 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 639.0) internal successors, (1917), 3 states have internal predecessors, (1917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:18,289 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1534.0) internal successors, (6136), 4 states have internal predecessors, (6136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:18,290 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1534.0) internal successors, (6136), 4 states have internal predecessors, (6136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:18,290 INFO L175 Difference]: Start difference. First operand has 60 places, 53 transitions, 210 flow. Second operand 3 states and 1917 transitions. [2022-11-25 18:27:18,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 51 transitions, 306 flow [2022-11-25 18:27:18,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 51 transitions, 304 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 18:27:18,293 INFO L231 Difference]: Finished difference. Result has 59 places, 51 transitions, 204 flow [2022-11-25 18:27:18,293 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1534, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=204, PETRI_PLACES=59, PETRI_TRANSITIONS=51} [2022-11-25 18:27:18,294 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, -11 predicate places. [2022-11-25 18:27:18,294 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 51 transitions, 204 flow [2022-11-25 18:27:18,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 628.3333333333334) internal successors, (1885), 3 states have internal predecessors, (1885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:18,295 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:27:18,295 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:27:18,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-25 18:27:18,295 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-25 18:27:18,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:27:18,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1882479327, now seen corresponding path program 1 times [2022-11-25 18:27:18,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:27:18,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466336402] [2022-11-25 18:27:18,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:27:18,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:27:18,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:18,377 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-25 18:27:18,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:27:18,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466336402] [2022-11-25 18:27:18,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466336402] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:27:18,378 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:27:18,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:27:18,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143771938] [2022-11-25 18:27:18,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:27:18,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:27:18,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:27:18,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:27:18,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:27:18,420 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 619 out of 1534 [2022-11-25 18:27:18,422 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 51 transitions, 204 flow. Second operand has 3 states, 3 states have (on average 622.3333333333334) internal successors, (1867), 3 states have internal predecessors, (1867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:18,422 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:27:18,422 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 619 of 1534 [2022-11-25 18:27:18,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:27:18,939 INFO L130 PetriNetUnfolder]: 1031/1678 cut-off events. [2022-11-25 18:27:18,939 INFO L131 PetriNetUnfolder]: For 68/68 co-relation queries the response was YES. [2022-11-25 18:27:18,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3679 conditions, 1678 events. 1031/1678 cut-off events. For 68/68 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 7311 event pairs, 659 based on Foata normal form. 0/1016 useless extension candidates. Maximal degree in co-relation 3658. Up to 1381 conditions per place. [2022-11-25 18:27:18,947 INFO L137 encePairwiseOnDemand]: 1527/1534 looper letters, 75 selfloop transitions, 2 changer transitions 0/77 dead transitions. [2022-11-25 18:27:18,947 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 77 transitions, 433 flow [2022-11-25 18:27:18,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:27:18,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:27:18,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1927 transitions. [2022-11-25 18:27:18,951 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4187309865275967 [2022-11-25 18:27:18,951 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1927 transitions. [2022-11-25 18:27:18,952 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1927 transitions. [2022-11-25 18:27:18,952 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:27:18,953 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1927 transitions. [2022-11-25 18:27:18,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 642.3333333333334) internal successors, (1927), 3 states have internal predecessors, (1927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:18,961 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1534.0) internal successors, (6136), 4 states have internal predecessors, (6136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:18,962 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1534.0) internal successors, (6136), 4 states have internal predecessors, (6136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:18,963 INFO L175 Difference]: Start difference. First operand has 59 places, 51 transitions, 204 flow. Second operand 3 states and 1927 transitions. [2022-11-25 18:27:18,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 77 transitions, 433 flow [2022-11-25 18:27:18,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 77 transitions, 432 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 18:27:18,966 INFO L231 Difference]: Finished difference. Result has 61 places, 52 transitions, 223 flow [2022-11-25 18:27:18,966 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1534, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=223, PETRI_PLACES=61, PETRI_TRANSITIONS=52} [2022-11-25 18:27:18,966 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, -9 predicate places. [2022-11-25 18:27:18,967 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 52 transitions, 223 flow [2022-11-25 18:27:18,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 622.3333333333334) internal successors, (1867), 3 states have internal predecessors, (1867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:18,967 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:27:18,968 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:27:18,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-25 18:27:18,968 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-25 18:27:18,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:27:18,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1772679975, now seen corresponding path program 1 times [2022-11-25 18:27:18,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:27:18,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095122570] [2022-11-25 18:27:18,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:27:18,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:27:18,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:19,067 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-25 18:27:19,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:27:19,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095122570] [2022-11-25 18:27:19,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095122570] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:27:19,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330651524] [2022-11-25 18:27:19,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:27:19,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:27:19,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d29141d-b5ab-42e5-bbf0-7027f05a5bfd/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:27:19,070 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d29141d-b5ab-42e5-bbf0-7027f05a5bfd/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:27:19,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d29141d-b5ab-42e5-bbf0-7027f05a5bfd/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-25 18:27:19,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:19,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 18:27:19,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:27:19,321 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-25 18:27:19,321 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:27:19,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1330651524] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:27:19,322 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:27:19,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-11-25 18:27:19,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685650007] [2022-11-25 18:27:19,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:27:19,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:27:19,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:27:19,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:27:19,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:27:19,386 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 619 out of 1534 [2022-11-25 18:27:19,388 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 52 transitions, 223 flow. Second operand has 4 states, 4 states have (on average 621.75) internal successors, (2487), 4 states have internal predecessors, (2487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:19,388 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:27:19,388 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 619 of 1534 [2022-11-25 18:27:19,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:27:20,080 INFO L130 PetriNetUnfolder]: 791/1322 cut-off events. [2022-11-25 18:27:20,080 INFO L131 PetriNetUnfolder]: For 264/264 co-relation queries the response was YES. [2022-11-25 18:27:20,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3272 conditions, 1322 events. 791/1322 cut-off events. For 264/264 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 5784 event pairs, 161 based on Foata normal form. 0/1044 useless extension candidates. Maximal degree in co-relation 3250. Up to 654 conditions per place. [2022-11-25 18:27:20,087 INFO L137 encePairwiseOnDemand]: 1529/1534 looper letters, 96 selfloop transitions, 2 changer transitions 0/98 dead transitions. [2022-11-25 18:27:20,087 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 98 transitions, 551 flow [2022-11-25 18:27:20,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:27:20,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 18:27:20,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2564 transitions. [2022-11-25 18:27:20,096 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4178617992177314 [2022-11-25 18:27:20,096 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2564 transitions. [2022-11-25 18:27:20,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2564 transitions. [2022-11-25 18:27:20,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:27:20,098 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2564 transitions. [2022-11-25 18:27:20,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 641.0) internal successors, (2564), 4 states have internal predecessors, (2564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:20,113 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1534.0) internal successors, (7670), 5 states have internal predecessors, (7670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:20,115 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1534.0) internal successors, (7670), 5 states have internal predecessors, (7670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:20,116 INFO L175 Difference]: Start difference. First operand has 61 places, 52 transitions, 223 flow. Second operand 4 states and 2564 transitions. [2022-11-25 18:27:20,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 98 transitions, 551 flow [2022-11-25 18:27:20,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 98 transitions, 549 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 18:27:20,120 INFO L231 Difference]: Finished difference. Result has 60 places, 49 transitions, 213 flow [2022-11-25 18:27:20,121 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1534, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=213, PETRI_PLACES=60, PETRI_TRANSITIONS=49} [2022-11-25 18:27:20,121 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, -10 predicate places. [2022-11-25 18:27:20,121 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 49 transitions, 213 flow [2022-11-25 18:27:20,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 621.75) internal successors, (2487), 4 states have internal predecessors, (2487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:20,122 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:27:20,123 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:27:20,136 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d29141d-b5ab-42e5-bbf0-7027f05a5bfd/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-25 18:27:20,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d29141d-b5ab-42e5-bbf0-7027f05a5bfd/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-25 18:27:20,329 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-25 18:27:20,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:27:20,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1772680019, now seen corresponding path program 1 times [2022-11-25 18:27:20,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:27:20,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723484145] [2022-11-25 18:27:20,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:27:20,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:27:20,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:20,479 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-25 18:27:20,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:27:20,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723484145] [2022-11-25 18:27:20,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723484145] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:27:20,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267297528] [2022-11-25 18:27:20,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:27:20,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:27:20,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d29141d-b5ab-42e5-bbf0-7027f05a5bfd/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:27:20,482 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d29141d-b5ab-42e5-bbf0-7027f05a5bfd/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:27:20,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d29141d-b5ab-42e5-bbf0-7027f05a5bfd/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-25 18:27:20,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:20,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 18:27:20,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:27:20,766 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-25 18:27:20,767 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:27:20,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1267297528] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:27:20,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:27:20,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2022-11-25 18:27:20,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953549442] [2022-11-25 18:27:20,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:27:20,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:27:20,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:27:20,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:27:20,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:27:20,779 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 625 out of 1534 [2022-11-25 18:27:20,782 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 49 transitions, 213 flow. Second operand has 3 states, 3 states have (on average 628.6666666666666) internal successors, (1886), 3 states have internal predecessors, (1886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:20,782 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:27:20,782 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 625 of 1534 [2022-11-25 18:27:20,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:27:21,177 INFO L130 PetriNetUnfolder]: 677/1134 cut-off events. [2022-11-25 18:27:21,177 INFO L131 PetriNetUnfolder]: For 360/360 co-relation queries the response was YES. [2022-11-25 18:27:21,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2845 conditions, 1134 events. 677/1134 cut-off events. For 360/360 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 4500 event pairs, 555 based on Foata normal form. 0/950 useless extension candidates. Maximal degree in co-relation 2823. Up to 1134 conditions per place. [2022-11-25 18:27:21,185 INFO L137 encePairwiseOnDemand]: 1531/1534 looper letters, 46 selfloop transitions, 1 changer transitions 0/47 dead transitions. [2022-11-25 18:27:21,185 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 47 transitions, 299 flow [2022-11-25 18:27:21,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:27:21,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:27:21,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1912 transitions. [2022-11-25 18:27:21,190 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4154715341156019 [2022-11-25 18:27:21,190 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1912 transitions. [2022-11-25 18:27:21,190 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1912 transitions. [2022-11-25 18:27:21,191 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:27:21,191 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1912 transitions. [2022-11-25 18:27:21,194 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 637.3333333333334) internal successors, (1912), 3 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:21,199 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1534.0) internal successors, (6136), 4 states have internal predecessors, (6136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:21,201 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1534.0) internal successors, (6136), 4 states have internal predecessors, (6136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:21,201 INFO L175 Difference]: Start difference. First operand has 60 places, 49 transitions, 213 flow. Second operand 3 states and 1912 transitions. [2022-11-25 18:27:21,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 47 transitions, 299 flow [2022-11-25 18:27:21,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 47 transitions, 296 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 18:27:21,204 INFO L231 Difference]: Finished difference. Result has 58 places, 47 transitions, 204 flow [2022-11-25 18:27:21,204 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1534, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=204, PETRI_PLACES=58, PETRI_TRANSITIONS=47} [2022-11-25 18:27:21,205 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, -12 predicate places. [2022-11-25 18:27:21,205 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 47 transitions, 204 flow [2022-11-25 18:27:21,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 628.6666666666666) internal successors, (1886), 3 states have internal predecessors, (1886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:21,206 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:27:21,206 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:27:21,212 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d29141d-b5ab-42e5-bbf0-7027f05a5bfd/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-25 18:27:21,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d29141d-b5ab-42e5-bbf0-7027f05a5bfd/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-25 18:27:21,412 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-25 18:27:21,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:27:21,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1772679961, now seen corresponding path program 1 times [2022-11-25 18:27:21,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:27:21,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351460612] [2022-11-25 18:27:21,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:27:21,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:27:21,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:21,627 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-25 18:27:21,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:27:21,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351460612] [2022-11-25 18:27:21,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351460612] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:27:21,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366114058] [2022-11-25 18:27:21,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:27:21,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:27:21,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d29141d-b5ab-42e5-bbf0-7027f05a5bfd/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:27:21,629 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d29141d-b5ab-42e5-bbf0-7027f05a5bfd/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:27:21,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d29141d-b5ab-42e5-bbf0-7027f05a5bfd/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-25 18:27:21,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:21,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 18:27:21,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:27:21,885 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-25 18:27:21,886 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:27:22,026 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-25 18:27:22,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1366114058] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:27:22,026 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 18:27:22,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-25 18:27:22,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038535798] [2022-11-25 18:27:22,027 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 18:27:22,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 18:27:22,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:27:22,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 18:27:22,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:27:22,141 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 619 out of 1534 [2022-11-25 18:27:22,144 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 47 transitions, 204 flow. Second operand has 7 states, 7 states have (on average 621.2857142857143) internal successors, (4349), 7 states have internal predecessors, (4349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:22,144 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:27:22,144 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 619 of 1534 [2022-11-25 18:27:22,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:27:23,005 INFO L130 PetriNetUnfolder]: 1205/1998 cut-off events. [2022-11-25 18:27:23,005 INFO L131 PetriNetUnfolder]: For 258/258 co-relation queries the response was YES. [2022-11-25 18:27:23,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4806 conditions, 1998 events. 1205/1998 cut-off events. For 258/258 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 9398 event pairs, 395 based on Foata normal form. 0/1718 useless extension candidates. Maximal degree in co-relation 4783. Up to 847 conditions per place. [2022-11-25 18:27:23,015 INFO L137 encePairwiseOnDemand]: 1531/1534 looper letters, 141 selfloop transitions, 5 changer transitions 0/146 dead transitions. [2022-11-25 18:27:23,015 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 146 transitions, 784 flow [2022-11-25 18:27:23,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 18:27:23,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 18:27:23,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3848 transitions. [2022-11-25 18:27:23,024 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4180790960451977 [2022-11-25 18:27:23,024 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 3848 transitions. [2022-11-25 18:27:23,024 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 3848 transitions. [2022-11-25 18:27:23,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:27:23,026 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 3848 transitions. [2022-11-25 18:27:23,031 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 641.3333333333334) internal successors, (3848), 6 states have internal predecessors, (3848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:23,039 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1534.0) internal successors, (10738), 7 states have internal predecessors, (10738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:23,041 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1534.0) internal successors, (10738), 7 states have internal predecessors, (10738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:23,042 INFO L175 Difference]: Start difference. First operand has 58 places, 47 transitions, 204 flow. Second operand 6 states and 3848 transitions. [2022-11-25 18:27:23,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 146 transitions, 784 flow [2022-11-25 18:27:23,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 146 transitions, 783 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 18:27:23,045 INFO L231 Difference]: Finished difference. Result has 65 places, 50 transitions, 239 flow [2022-11-25 18:27:23,046 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1534, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=239, PETRI_PLACES=65, PETRI_TRANSITIONS=50} [2022-11-25 18:27:23,046 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, -5 predicate places. [2022-11-25 18:27:23,046 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 50 transitions, 239 flow [2022-11-25 18:27:23,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 621.2857142857143) internal successors, (4349), 7 states have internal predecessors, (4349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:23,047 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:27:23,048 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:27:23,056 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d29141d-b5ab-42e5-bbf0-7027f05a5bfd/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-25 18:27:23,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d29141d-b5ab-42e5-bbf0-7027f05a5bfd/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-25 18:27:23,254 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-25 18:27:23,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:27:23,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1011685615, now seen corresponding path program 2 times [2022-11-25 18:27:23,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:27:23,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788642593] [2022-11-25 18:27:23,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:27:23,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:27:23,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:23,615 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-25 18:27:23,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:27:23,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788642593] [2022-11-25 18:27:23,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788642593] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:27:23,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516676027] [2022-11-25 18:27:23,617 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 18:27:23,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:27:23,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d29141d-b5ab-42e5-bbf0-7027f05a5bfd/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:27:23,620 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d29141d-b5ab-42e5-bbf0-7027f05a5bfd/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:27:23,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d29141d-b5ab-42e5-bbf0-7027f05a5bfd/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-25 18:27:23,883 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-25 18:27:23,883 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:27:23,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 18:27:23,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:27:23,933 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-25 18:27:23,933 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:27:23,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [516676027] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:27:23,934 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:27:23,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [6] total 7 [2022-11-25 18:27:23,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885271132] [2022-11-25 18:27:23,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:27:23,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:27:23,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:27:23,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:27:23,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-25 18:27:23,943 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 625 out of 1534 [2022-11-25 18:27:23,945 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 50 transitions, 239 flow. Second operand has 3 states, 3 states have (on average 628.6666666666666) internal successors, (1886), 3 states have internal predecessors, (1886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:23,945 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:27:23,945 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 625 of 1534 [2022-11-25 18:27:23,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:27:24,618 INFO L130 PetriNetUnfolder]: 1079/1790 cut-off events. [2022-11-25 18:27:24,618 INFO L131 PetriNetUnfolder]: For 1364/1364 co-relation queries the response was YES. [2022-11-25 18:27:24,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4762 conditions, 1790 events. 1079/1790 cut-off events. For 1364/1364 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 7930 event pairs, 919 based on Foata normal form. 80/1662 useless extension candidates. Maximal degree in co-relation 4736. Up to 1790 conditions per place. [2022-11-25 18:27:24,629 INFO L137 encePairwiseOnDemand]: 1531/1534 looper letters, 43 selfloop transitions, 1 changer transitions 4/48 dead transitions. [2022-11-25 18:27:24,629 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 48 transitions, 321 flow [2022-11-25 18:27:24,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:27:24,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:27:24,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1910 transitions. [2022-11-25 18:27:24,634 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4150369404606693 [2022-11-25 18:27:24,634 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1910 transitions. [2022-11-25 18:27:24,634 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1910 transitions. [2022-11-25 18:27:24,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:27:24,635 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1910 transitions. [2022-11-25 18:27:24,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 636.6666666666666) internal successors, (1910), 3 states have internal predecessors, (1910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:24,642 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1534.0) internal successors, (6136), 4 states have internal predecessors, (6136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:24,643 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1534.0) internal successors, (6136), 4 states have internal predecessors, (6136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:24,644 INFO L175 Difference]: Start difference. First operand has 65 places, 50 transitions, 239 flow. Second operand 3 states and 1910 transitions. [2022-11-25 18:27:24,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 48 transitions, 321 flow [2022-11-25 18:27:24,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 48 transitions, 303 flow, removed 4 selfloop flow, removed 5 redundant places. [2022-11-25 18:27:24,650 INFO L231 Difference]: Finished difference. Result has 60 places, 44 transitions, 200 flow [2022-11-25 18:27:24,650 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1534, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=200, PETRI_PLACES=60, PETRI_TRANSITIONS=44} [2022-11-25 18:27:24,651 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, -10 predicate places. [2022-11-25 18:27:24,651 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 44 transitions, 200 flow [2022-11-25 18:27:24,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 628.6666666666666) internal successors, (1886), 3 states have internal predecessors, (1886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:24,652 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:27:24,652 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:27:24,659 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d29141d-b5ab-42e5-bbf0-7027f05a5bfd/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-25 18:27:24,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d29141d-b5ab-42e5-bbf0-7027f05a5bfd/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:27:24,859 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-25 18:27:24,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:27:24,859 INFO L85 PathProgramCache]: Analyzing trace with hash 750432787, now seen corresponding path program 1 times [2022-11-25 18:27:24,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:27:24,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921072223] [2022-11-25 18:27:24,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:27:24,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:27:24,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:25,006 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-25 18:27:25,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:27:25,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921072223] [2022-11-25 18:27:25,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921072223] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:27:25,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154167984] [2022-11-25 18:27:25,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:27:25,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:27:25,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d29141d-b5ab-42e5-bbf0-7027f05a5bfd/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:27:25,009 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d29141d-b5ab-42e5-bbf0-7027f05a5bfd/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:27:25,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d29141d-b5ab-42e5-bbf0-7027f05a5bfd/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-25 18:27:25,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:25,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 18:27:25,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:27:25,301 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-25 18:27:25,302 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:27:25,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1154167984] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:27:25,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 18:27:25,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-11-25 18:27:25,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832485562] [2022-11-25 18:27:25,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:27:25,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:27:25,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:27:25,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:27:25,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:27:25,367 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 619 out of 1534 [2022-11-25 18:27:25,369 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 44 transitions, 200 flow. Second operand has 4 states, 4 states have (on average 623.5) internal successors, (2494), 4 states have internal predecessors, (2494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:25,369 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:27:25,369 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 619 of 1534 [2022-11-25 18:27:25,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:27:25,810 INFO L130 PetriNetUnfolder]: 815/1348 cut-off events. [2022-11-25 18:27:25,810 INFO L131 PetriNetUnfolder]: For 264/264 co-relation queries the response was YES. [2022-11-25 18:27:25,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3209 conditions, 1348 events. 815/1348 cut-off events. For 264/264 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 5524 event pairs, 11 based on Foata normal form. 0/1270 useless extension candidates. Maximal degree in co-relation 3185. Up to 756 conditions per place. [2022-11-25 18:27:25,816 INFO L137 encePairwiseOnDemand]: 1529/1534 looper letters, 69 selfloop transitions, 2 changer transitions 0/71 dead transitions. [2022-11-25 18:27:25,816 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 71 transitions, 418 flow [2022-11-25 18:27:25,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:27:25,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 18:27:25,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2528 transitions. [2022-11-25 18:27:25,822 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41199478487614083 [2022-11-25 18:27:25,823 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2528 transitions. [2022-11-25 18:27:25,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2528 transitions. [2022-11-25 18:27:25,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:27:25,823 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2528 transitions. [2022-11-25 18:27:25,825 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 632.0) internal successors, (2528), 4 states have internal predecessors, (2528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:25,828 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1534.0) internal successors, (7670), 5 states have internal predecessors, (7670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:25,829 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1534.0) internal successors, (7670), 5 states have internal predecessors, (7670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:25,829 INFO L175 Difference]: Start difference. First operand has 60 places, 44 transitions, 200 flow. Second operand 4 states and 2528 transitions. [2022-11-25 18:27:25,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 71 transitions, 418 flow [2022-11-25 18:27:25,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 71 transitions, 417 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 18:27:25,832 INFO L231 Difference]: Finished difference. Result has 56 places, 41 transitions, 191 flow [2022-11-25 18:27:25,832 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1534, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=191, PETRI_PLACES=56, PETRI_TRANSITIONS=41} [2022-11-25 18:27:25,832 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, -14 predicate places. [2022-11-25 18:27:25,833 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 41 transitions, 191 flow [2022-11-25 18:27:25,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 623.5) internal successors, (2494), 4 states have internal predecessors, (2494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:25,833 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:27:25,834 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:27:25,843 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d29141d-b5ab-42e5-bbf0-7027f05a5bfd/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-25 18:27:26,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d29141d-b5ab-42e5-bbf0-7027f05a5bfd/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:27:26,040 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-25 18:27:26,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:27:26,040 INFO L85 PathProgramCache]: Analyzing trace with hash 750432788, now seen corresponding path program 1 times [2022-11-25 18:27:26,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:27:26,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962565310] [2022-11-25 18:27:26,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:27:26,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:27:26,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:26,142 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-25 18:27:26,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:27:26,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962565310] [2022-11-25 18:27:26,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962565310] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:27:26,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477124281] [2022-11-25 18:27:26,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:27:26,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:27:26,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d29141d-b5ab-42e5-bbf0-7027f05a5bfd/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:27:26,148 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d29141d-b5ab-42e5-bbf0-7027f05a5bfd/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:27:26,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d29141d-b5ab-42e5-bbf0-7027f05a5bfd/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-25 18:27:26,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:26,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 18:27:26,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:27:26,445 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-25 18:27:26,445 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:27:26,473 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-25 18:27:26,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1477124281] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:27:26,474 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 18:27:26,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-25 18:27:26,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225234193] [2022-11-25 18:27:26,474 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 18:27:26,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 18:27:26,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:27:26,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 18:27:26,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-25 18:27:26,603 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 617 out of 1534 [2022-11-25 18:27:26,606 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 41 transitions, 191 flow. Second operand has 7 states, 7 states have (on average 622.4285714285714) internal successors, (4357), 7 states have internal predecessors, (4357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:26,606 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:27:26,606 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 617 of 1534 [2022-11-25 18:27:26,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:27:27,176 INFO L130 PetriNetUnfolder]: 1107/1822 cut-off events. [2022-11-25 18:27:27,176 INFO L131 PetriNetUnfolder]: For 415/415 co-relation queries the response was YES. [2022-11-25 18:27:27,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4314 conditions, 1822 events. 1107/1822 cut-off events. For 415/415 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 7410 event pairs, 371 based on Foata normal form. 78/1796 useless extension candidates. Maximal degree in co-relation 4290. Up to 746 conditions per place. [2022-11-25 18:27:27,184 INFO L137 encePairwiseOnDemand]: 1528/1534 looper letters, 75 selfloop transitions, 4 changer transitions 0/79 dead transitions. [2022-11-25 18:27:27,184 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 79 transitions, 453 flow [2022-11-25 18:27:27,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 18:27:27,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 18:27:27,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3146 transitions. [2022-11-25 18:27:27,192 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4101694915254237 [2022-11-25 18:27:27,192 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3146 transitions. [2022-11-25 18:27:27,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3146 transitions. [2022-11-25 18:27:27,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:27:27,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3146 transitions. [2022-11-25 18:27:27,198 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 629.2) internal successors, (3146), 5 states have internal predecessors, (3146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:27,204 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1534.0) internal successors, (9204), 6 states have internal predecessors, (9204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:27,206 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1534.0) internal successors, (9204), 6 states have internal predecessors, (9204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:27,207 INFO L175 Difference]: Start difference. First operand has 56 places, 41 transitions, 191 flow. Second operand 5 states and 3146 transitions. [2022-11-25 18:27:27,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 79 transitions, 453 flow [2022-11-25 18:27:27,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 79 transitions, 450 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 18:27:27,209 INFO L231 Difference]: Finished difference. Result has 58 places, 41 transitions, 204 flow [2022-11-25 18:27:27,210 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1534, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=204, PETRI_PLACES=58, PETRI_TRANSITIONS=41} [2022-11-25 18:27:27,210 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, -12 predicate places. [2022-11-25 18:27:27,210 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 41 transitions, 204 flow [2022-11-25 18:27:27,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 622.4285714285714) internal successors, (4357), 7 states have internal predecessors, (4357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:27,212 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:27:27,212 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-25 18:27:27,218 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d29141d-b5ab-42e5-bbf0-7027f05a5bfd/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-25 18:27:27,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d29141d-b5ab-42e5-bbf0-7027f05a5bfd/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:27:27,418 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 77 more)] === [2022-11-25 18:27:27,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:27:27,419 INFO L85 PathProgramCache]: Analyzing trace with hash 651553264, now seen corresponding path program 1 times [2022-11-25 18:27:27,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:27:27,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032083535] [2022-11-25 18:27:27,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:27:27,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:27:27,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:27,577 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-25 18:27:27,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:27:27,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032083535] [2022-11-25 18:27:27,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032083535] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 18:27:27,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1044025143] [2022-11-25 18:27:27,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:27:27,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:27:27,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d29141d-b5ab-42e5-bbf0-7027f05a5bfd/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:27:27,580 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d29141d-b5ab-42e5-bbf0-7027f05a5bfd/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:27:27,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d29141d-b5ab-42e5-bbf0-7027f05a5bfd/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-25 18:27:27,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:27:27,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 18:27:27,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:27:27,922 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-25 18:27:27,922 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:27:27,967 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-25 18:27:27,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1044025143] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:27:27,967 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 18:27:27,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2022-11-25 18:27:27,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091991133] [2022-11-25 18:27:27,968 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 18:27:27,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 18:27:27,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:27:27,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 18:27:27,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-11-25 18:27:28,119 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 618 out of 1534 [2022-11-25 18:27:28,123 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 41 transitions, 204 flow. Second operand has 9 states, 9 states have (on average 624.2222222222222) internal successors, (5618), 9 states have internal predecessors, (5618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:28,123 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:27:28,123 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 618 of 1534 [2022-11-25 18:27:28,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:27:28,917 INFO L130 PetriNetUnfolder]: 1399/2296 cut-off events. [2022-11-25 18:27:28,917 INFO L131 PetriNetUnfolder]: For 691/691 co-relation queries the response was YES. [2022-11-25 18:27:28,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5473 conditions, 2296 events. 1399/2296 cut-off events. For 691/691 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 9218 event pairs, 11 based on Foata normal form. 52/2244 useless extension candidates. Maximal degree in co-relation 5447. Up to 564 conditions per place. [2022-11-25 18:27:28,923 INFO L137 encePairwiseOnDemand]: 1529/1534 looper letters, 0 selfloop transitions, 0 changer transitions 120/120 dead transitions. [2022-11-25 18:27:28,923 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 120 transitions, 668 flow [2022-11-25 18:27:28,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 18:27:28,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-25 18:27:28,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4416 transitions. [2022-11-25 18:27:28,933 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4112497671819706 [2022-11-25 18:27:28,933 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 4416 transitions. [2022-11-25 18:27:28,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 4416 transitions. [2022-11-25 18:27:28,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:27:28,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 4416 transitions. [2022-11-25 18:27:28,940 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 630.8571428571429) internal successors, (4416), 7 states have internal predecessors, (4416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:28,949 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1534.0) internal successors, (12272), 8 states have internal predecessors, (12272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:28,951 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1534.0) internal successors, (12272), 8 states have internal predecessors, (12272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:28,951 INFO L175 Difference]: Start difference. First operand has 58 places, 41 transitions, 204 flow. Second operand 7 states and 4416 transitions. [2022-11-25 18:27:28,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 120 transitions, 668 flow [2022-11-25 18:27:28,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 120 transitions, 660 flow, removed 1 selfloop flow, removed 3 redundant places. [2022-11-25 18:27:28,955 INFO L231 Difference]: Finished difference. Result has 59 places, 0 transitions, 0 flow [2022-11-25 18:27:28,955 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=1534, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=59, PETRI_TRANSITIONS=0} [2022-11-25 18:27:28,955 INFO L288 CegarLoopForPetriNet]: 70 programPoint places, -11 predicate places. [2022-11-25 18:27:28,956 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 0 transitions, 0 flow [2022-11-25 18:27:28,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 624.2222222222222) internal successors, (5618), 9 states have internal predecessors, (5618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:27:28,959 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW (79 of 80 remaining) [2022-11-25 18:27:28,960 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (78 of 80 remaining) [2022-11-25 18:27:28,960 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (77 of 80 remaining) [2022-11-25 18:27:28,960 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (76 of 80 remaining) [2022-11-25 18:27:28,960 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err14ASSERT_VIOLATIONINTEGER_OVERFLOW (75 of 80 remaining) [2022-11-25 18:27:28,960 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err15ASSERT_VIOLATIONINTEGER_OVERFLOW (74 of 80 remaining) [2022-11-25 18:27:28,961 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err16ASSERT_VIOLATIONINTEGER_OVERFLOW (73 of 80 remaining) [2022-11-25 18:27:28,961 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (72 of 80 remaining) [2022-11-25 18:27:28,961 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (71 of 80 remaining) [2022-11-25 18:27:28,961 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err17ASSERT_VIOLATIONINTEGER_OVERFLOW (70 of 80 remaining) [2022-11-25 18:27:28,961 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (69 of 80 remaining) [2022-11-25 18:27:28,961 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (68 of 80 remaining) [2022-11-25 18:27:28,962 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (67 of 80 remaining) [2022-11-25 18:27:28,962 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (66 of 80 remaining) [2022-11-25 18:27:28,962 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (65 of 80 remaining) [2022-11-25 18:27:28,962 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (64 of 80 remaining) [2022-11-25 18:27:28,962 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (63 of 80 remaining) [2022-11-25 18:27:28,963 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (62 of 80 remaining) [2022-11-25 18:27:28,963 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err12ASSERT_VIOLATIONINTEGER_OVERFLOW (61 of 80 remaining) [2022-11-25 18:27:28,963 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (60 of 80 remaining) [2022-11-25 18:27:28,963 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (59 of 80 remaining) [2022-11-25 18:27:28,963 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (58 of 80 remaining) [2022-11-25 18:27:28,963 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err14ASSERT_VIOLATIONINTEGER_OVERFLOW (57 of 80 remaining) [2022-11-25 18:27:28,964 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err15ASSERT_VIOLATIONINTEGER_OVERFLOW (56 of 80 remaining) [2022-11-25 18:27:28,964 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err16ASSERT_VIOLATIONINTEGER_OVERFLOW (55 of 80 remaining) [2022-11-25 18:27:28,964 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (54 of 80 remaining) [2022-11-25 18:27:28,964 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (53 of 80 remaining) [2022-11-25 18:27:28,964 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err17ASSERT_VIOLATIONINTEGER_OVERFLOW (52 of 80 remaining) [2022-11-25 18:27:28,964 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (51 of 80 remaining) [2022-11-25 18:27:28,965 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (50 of 80 remaining) [2022-11-25 18:27:28,965 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (49 of 80 remaining) [2022-11-25 18:27:28,965 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (48 of 80 remaining) [2022-11-25 18:27:28,965 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (47 of 80 remaining) [2022-11-25 18:27:28,965 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (46 of 80 remaining) [2022-11-25 18:27:28,965 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (45 of 80 remaining) [2022-11-25 18:27:28,966 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (44 of 80 remaining) [2022-11-25 18:27:28,966 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (43 of 80 remaining) [2022-11-25 18:27:28,966 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (42 of 80 remaining) [2022-11-25 18:27:28,966 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (41 of 80 remaining) [2022-11-25 18:27:28,966 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (40 of 80 remaining) [2022-11-25 18:27:28,966 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (39 of 80 remaining) [2022-11-25 18:27:28,967 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 80 remaining) [2022-11-25 18:27:28,967 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (37 of 80 remaining) [2022-11-25 18:27:28,967 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (36 of 80 remaining) [2022-11-25 18:27:28,967 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err12ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 80 remaining) [2022-11-25 18:27:28,967 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 80 remaining) [2022-11-25 18:27:28,968 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 80 remaining) [2022-11-25 18:27:28,968 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 80 remaining) [2022-11-25 18:27:28,968 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err14ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 80 remaining) [2022-11-25 18:27:28,968 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err15ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 80 remaining) [2022-11-25 18:27:28,968 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err16ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 80 remaining) [2022-11-25 18:27:28,968 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 80 remaining) [2022-11-25 18:27:28,969 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 80 remaining) [2022-11-25 18:27:28,969 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err17ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 80 remaining) [2022-11-25 18:27:28,969 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 80 remaining) [2022-11-25 18:27:28,969 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 80 remaining) [2022-11-25 18:27:28,969 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 80 remaining) [2022-11-25 18:27:28,969 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 80 remaining) [2022-11-25 18:27:28,970 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 80 remaining) [2022-11-25 18:27:28,970 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 80 remaining) [2022-11-25 18:27:28,970 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 80 remaining) [2022-11-25 18:27:28,970 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 80 remaining) [2022-11-25 18:27:28,970 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err12ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 80 remaining) [2022-11-25 18:27:28,970 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err13ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 80 remaining) [2022-11-25 18:27:28,971 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 80 remaining) [2022-11-25 18:27:28,971 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 80 remaining) [2022-11-25 18:27:28,971 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err14ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 80 remaining) [2022-11-25 18:27:28,971 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err15ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 80 remaining) [2022-11-25 18:27:28,971 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err16ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 80 remaining) [2022-11-25 18:27:28,972 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 80 remaining) [2022-11-25 18:27:28,972 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 80 remaining) [2022-11-25 18:27:28,972 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err17ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 80 remaining) [2022-11-25 18:27:28,972 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 80 remaining) [2022-11-25 18:27:28,972 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 80 remaining) [2022-11-25 18:27:28,972 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 80 remaining) [2022-11-25 18:27:28,973 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 80 remaining) [2022-11-25 18:27:28,973 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 80 remaining) [2022-11-25 18:27:28,973 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 80 remaining) [2022-11-25 18:27:28,973 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 80 remaining) [2022-11-25 18:27:28,973 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 80 remaining) [2022-11-25 18:27:28,987 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d29141d-b5ab-42e5-bbf0-7027f05a5bfd/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-25 18:27:29,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d29141d-b5ab-42e5-bbf0-7027f05a5bfd/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-25 18:27:29,180 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:27:29,185 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-25 18:27:29,185 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 18:27:29,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 06:27:29 BasicIcfg [2022-11-25 18:27:29,189 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 18:27:29,190 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 18:27:29,190 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 18:27:29,190 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 18:27:29,191 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:25:59" (3/4) ... [2022-11-25 18:27:29,194 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-25 18:27:29,200 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-25 18:27:29,200 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-25 18:27:29,208 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2022-11-25 18:27:29,208 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-25 18:27:29,208 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-25 18:27:29,208 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-25 18:27:29,273 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d29141d-b5ab-42e5-bbf0-7027f05a5bfd/bin/uautomizer-ZsLfNo2U6R/witness.graphml [2022-11-25 18:27:29,273 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 18:27:29,274 INFO L158 Benchmark]: Toolchain (without parser) took 91447.91ms. Allocated memory was 151.0MB in the beginning and 2.2GB in the end (delta: 2.1GB). Free memory was 119.0MB in the beginning and 1.8GB in the end (delta: -1.7GB). Peak memory consumption was 382.1MB. Max. memory is 16.1GB. [2022-11-25 18:27:29,274 INFO L158 Benchmark]: CDTParser took 0.81ms. Allocated memory is still 151.0MB. Free memory is still 96.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 18:27:29,274 INFO L158 Benchmark]: CACSL2BoogieTranslator took 317.67ms. Allocated memory is still 151.0MB. Free memory was 118.6MB in the beginning and 105.2MB in the end (delta: 13.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-25 18:27:29,275 INFO L158 Benchmark]: Boogie Procedure Inliner took 68.83ms. Allocated memory is still 151.0MB. Free memory was 105.2MB in the beginning and 101.7MB in the end (delta: 3.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 18:27:29,275 INFO L158 Benchmark]: Boogie Preprocessor took 43.54ms. Allocated memory is still 151.0MB. Free memory was 101.7MB in the beginning and 99.0MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-25 18:27:29,275 INFO L158 Benchmark]: RCFGBuilder took 1316.20ms. Allocated memory was 151.0MB in the beginning and 209.7MB in the end (delta: 58.7MB). Free memory was 99.0MB in the beginning and 163.1MB in the end (delta: -64.2MB). Peak memory consumption was 32.7MB. Max. memory is 16.1GB. [2022-11-25 18:27:29,276 INFO L158 Benchmark]: TraceAbstraction took 89611.46ms. Allocated memory was 209.7MB in the beginning and 2.2GB in the end (delta: 2.0GB). Free memory was 162.1MB in the beginning and 1.8GB in the end (delta: -1.7GB). Peak memory consumption was 1.4GB. Max. memory is 16.1GB. [2022-11-25 18:27:29,276 INFO L158 Benchmark]: Witness Printer took 83.41ms. Allocated memory is still 2.2GB. Free memory was 1.8GB in the beginning and 1.8GB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 18:27:29,284 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.81ms. Allocated memory is still 151.0MB. Free memory is still 96.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 317.67ms. Allocated memory is still 151.0MB. Free memory was 118.6MB in the beginning and 105.2MB in the end (delta: 13.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 68.83ms. Allocated memory is still 151.0MB. Free memory was 105.2MB in the beginning and 101.7MB in the end (delta: 3.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 43.54ms. Allocated memory is still 151.0MB. Free memory was 101.7MB in the beginning and 99.0MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1316.20ms. Allocated memory was 151.0MB in the beginning and 209.7MB in the end (delta: 58.7MB). Free memory was 99.0MB in the beginning and 163.1MB in the end (delta: -64.2MB). Peak memory consumption was 32.7MB. Max. memory is 16.1GB. * TraceAbstraction took 89611.46ms. Allocated memory was 209.7MB in the beginning and 2.2GB in the end (delta: 2.0GB). Free memory was 162.1MB in the beginning and 1.8GB in the end (delta: -1.7GB). Peak memory consumption was 1.4GB. Max. memory is 16.1GB. * Witness Printer took 83.41ms. Allocated memory is still 2.2GB. Free memory was 1.8GB in the beginning and 1.8GB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 57.0s, 586 PlacesBefore, 70 PlacesAfterwards, 639 TransitionsBefore, 70 TransitionsAfterwards, 119448 CoEnabledTransitionPairs, 9 FixpointIterations, 142 TrivialSequentialCompositions, 522 ConcurrentSequentialCompositions, 21 TrivialYvCompositions, 137 ConcurrentYvCompositions, 53 ChoiceCompositions, 875 TotalNumberOfCompositions, 117909 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 111468, independent: 111305, independent conditional: 0, independent unconditional: 111305, dependent: 163, dependent conditional: 0, dependent unconditional: 163, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 87235, independent: 87198, independent conditional: 0, independent unconditional: 87198, dependent: 37, dependent conditional: 0, dependent unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 87235, independent: 87198, independent conditional: 0, independent unconditional: 87198, dependent: 37, dependent conditional: 0, dependent unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 37, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 37, dependent conditional: 0, dependent unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 194, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 194, dependent conditional: 0, dependent unconditional: 194, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 111468, independent: 24107, independent conditional: 0, independent unconditional: 24107, dependent: 126, dependent conditional: 0, dependent unconditional: 126, unknown: 87235, unknown conditional: 0, unknown unconditional: 87235] , Statistics on independence cache: Total cache size (in pairs): 299, Positive cache size: 281, Positive conditional cache size: 0, Positive unconditional cache size: 281, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 145]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 145]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 145]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 145]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 146]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 146]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 147]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 146]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 147]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 146]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 58]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 147]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 147]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 60]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 62]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 62]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 145]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 145]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 145]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 145]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 146]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 146]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 147]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 146]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 85]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 147]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 146]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 85]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 147]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 147]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 138]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 138]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 138]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 138]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 127]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 127]: 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, 1025 locations, 80 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: 89.3s, OverallIterations: 22, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 21.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 57.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2463 SdHoareTripleChecker+Valid, 5.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1968 mSDsluCounter, 99 SdHoareTripleChecker+Invalid, 4.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 229 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3849 IncrementalHoareTripleChecker+Invalid, 4078 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 229 mSolverCounterUnsat, 99 mSDtfsCounter, 3849 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 358 GetRequests, 275 SyntacticMatches, 4 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=282occurred in iteration=2, InterpolantAutomatonStates: 90, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 536 NumberOfCodeBlocks, 510 NumberOfCodeBlocksAsserted, 35 NumberOfCheckSat, 598 ConstructedInterpolants, 0 QuantifiedInterpolants, 1404 SizeOfPredicates, 6 NumberOfNonLiveVariables, 2749 ConjunctsInSsa, 55 ConjunctsInUnsatCore, 41 InterpolantComputations, 16 PerfectInterpolantSequences, 785/931 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 42 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-25 18:27:29,331 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d29141d-b5ab-42e5-bbf0-7027f05a5bfd/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE