./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-sum-array-hom.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b607b58b-2a7a-4448-9d9c-fca5bacec794/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b607b58b-2a7a-4448-9d9c-fca5bacec794/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_b607b58b-2a7a-4448-9d9c-fca5bacec794/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b607b58b-2a7a-4448-9d9c-fca5bacec794/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-sum-array-hom.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b607b58b-2a7a-4448-9d9c-fca5bacec794/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_b607b58b-2a7a-4448-9d9c-fca5bacec794/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 0307f20ae0363cc6fed70ae0937c5000167639ab486b68a523e3313ccdd28e28 --- 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 17:15:08,800 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:15:08,812 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:15:08,832 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:15:08,839 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:15:08,842 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:15:08,845 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:15:08,849 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:15:08,853 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:15:08,854 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:15:08,856 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:15:08,859 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:15:08,859 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:15:08,867 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:15:08,868 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:15:08,870 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:15:08,873 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:15:08,875 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:15:08,877 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:15:08,879 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:15:08,884 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:15:08,885 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:15:08,887 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:15:08,889 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:15:08,892 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:15:08,896 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:15:08,897 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:15:08,898 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:15:08,899 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:15:08,900 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:15:08,902 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:15:08,903 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:15:08,904 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:15:08,905 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:15:08,907 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:15:08,908 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:15:08,908 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:15:08,909 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:15:08,909 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:15:08,911 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:15:08,911 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:15:08,912 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b607b58b-2a7a-4448-9d9c-fca5bacec794/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-25 17:15:08,946 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:15:08,946 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:15:08,947 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:15:08,947 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:15:08,948 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:15:08,948 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:15:08,949 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:15:08,949 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:15:08,949 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:15:08,949 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:15:08,951 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:15:08,951 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 17:15:08,951 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:15:08,951 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:15:08,951 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:15:08,952 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 17:15:08,952 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:15:08,952 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 17:15:08,952 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 17:15:08,952 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:15:08,953 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 17:15:08,953 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:15:08,953 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 17:15:08,953 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:15:08,954 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:15:08,954 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:15:08,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:15:08,954 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:15:08,955 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:15:08,955 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 17:15:08,955 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:15:08,956 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:15:08,956 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:15:08,956 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 17:15:08,956 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:15:08,957 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:15:08,957 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_b607b58b-2a7a-4448-9d9c-fca5bacec794/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b607b58b-2a7a-4448-9d9c-fca5bacec794/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0307f20ae0363cc6fed70ae0937c5000167639ab486b68a523e3313ccdd28e28 [2022-11-25 17:15:09,257 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:15:09,285 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:15:09,289 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:15:09,291 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:15:09,291 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:15:09,292 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b607b58b-2a7a-4448-9d9c-fca5bacec794/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/weaver/popl20-more-sum-array-hom.wvr.c [2022-11-25 17:15:12,347 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:15:12,617 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:15:12,618 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b607b58b-2a7a-4448-9d9c-fca5bacec794/sv-benchmarks/c/weaver/popl20-more-sum-array-hom.wvr.c [2022-11-25 17:15:12,627 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b607b58b-2a7a-4448-9d9c-fca5bacec794/bin/uautomizer-ZsLfNo2U6R/data/89ceb5afe/fc24c3fa693b4285928d90004d97a2ab/FLAG6d2bc494f [2022-11-25 17:15:12,643 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b607b58b-2a7a-4448-9d9c-fca5bacec794/bin/uautomizer-ZsLfNo2U6R/data/89ceb5afe/fc24c3fa693b4285928d90004d97a2ab [2022-11-25 17:15:12,648 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:15:12,651 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:15:12,654 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:15:12,654 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:15:12,658 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:15:12,659 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:15:12" (1/1) ... [2022-11-25 17:15:12,660 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f6e8d6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:15:12, skipping insertion in model container [2022-11-25 17:15:12,661 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:15:12" (1/1) ... [2022-11-25 17:15:12,669 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:15:12,729 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:15:12,905 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_b607b58b-2a7a-4448-9d9c-fca5bacec794/sv-benchmarks/c/weaver/popl20-more-sum-array-hom.wvr.c[2396,2409] [2022-11-25 17:15:12,911 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:15:12,920 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:15:12,942 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_b607b58b-2a7a-4448-9d9c-fca5bacec794/sv-benchmarks/c/weaver/popl20-more-sum-array-hom.wvr.c[2396,2409] [2022-11-25 17:15:12,945 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:15:12,960 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:15:12,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:15:12 WrapperNode [2022-11-25 17:15:12,960 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:15:12,961 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:15:12,962 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:15:12,962 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:15:12,969 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:15:12" (1/1) ... [2022-11-25 17:15:12,978 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:15:12" (1/1) ... [2022-11-25 17:15:13,003 INFO L138 Inliner]: procedures = 25, calls = 34, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 104 [2022-11-25 17:15:13,004 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:15:13,004 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:15:13,004 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:15:13,005 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:15:13,014 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:15:12" (1/1) ... [2022-11-25 17:15:13,014 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:15:12" (1/1) ... [2022-11-25 17:15:13,017 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:15:12" (1/1) ... [2022-11-25 17:15:13,017 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:15:12" (1/1) ... [2022-11-25 17:15:13,023 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:15:12" (1/1) ... [2022-11-25 17:15:13,027 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:15:12" (1/1) ... [2022-11-25 17:15:13,029 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:15:12" (1/1) ... [2022-11-25 17:15:13,030 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:15:12" (1/1) ... [2022-11-25 17:15:13,032 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:15:13,033 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:15:13,033 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:15:13,033 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:15:13,034 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:15:12" (1/1) ... [2022-11-25 17:15:13,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:15:13,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b607b58b-2a7a-4448-9d9c-fca5bacec794/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:15:13,068 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b607b58b-2a7a-4448-9d9c-fca5bacec794/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:15:13,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b607b58b-2a7a-4448-9d9c-fca5bacec794/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:15:13,113 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:15:13,113 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 17:15:13,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 17:15:13,113 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 17:15:13,114 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-25 17:15:13,114 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-25 17:15:13,114 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-25 17:15:13,114 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-25 17:15:13,114 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-25 17:15:13,114 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-25 17:15:13,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 17:15:13,115 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 17:15:13,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:15:13,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:15:13,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 17:15:13,117 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 17:15:13,224 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:15:13,226 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:15:13,649 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:15:13,659 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:15:13,661 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-25 17:15:13,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:15:13 BoogieIcfgContainer [2022-11-25 17:15:13,665 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:15:13,668 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:15:13,669 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:15:13,672 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:15:13,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:15:12" (1/3) ... [2022-11-25 17:15:13,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c51be5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:15:13, skipping insertion in model container [2022-11-25 17:15:13,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:15:12" (2/3) ... [2022-11-25 17:15:13,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c51be5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:15:13, skipping insertion in model container [2022-11-25 17:15:13,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:15:13" (3/3) ... [2022-11-25 17:15:13,677 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-sum-array-hom.wvr.c [2022-11-25 17:15:13,693 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 17:15:13,703 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:15:13,704 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-25 17:15:13,704 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 17:15:13,848 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-25 17:15:13,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 173 places, 175 transitions, 374 flow [2022-11-25 17:15:14,026 INFO L130 PetriNetUnfolder]: 12/172 cut-off events. [2022-11-25 17:15:14,032 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-25 17:15:14,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185 conditions, 172 events. 12/172 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 164 event pairs, 0 based on Foata normal form. 0/152 useless extension candidates. Maximal degree in co-relation 129. Up to 2 conditions per place. [2022-11-25 17:15:14,038 INFO L82 GeneralOperation]: Start removeDead. Operand has 173 places, 175 transitions, 374 flow [2022-11-25 17:15:14,049 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 150 places, 151 transitions, 317 flow [2022-11-25 17:15:14,052 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 17:15:14,088 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 150 places, 151 transitions, 317 flow [2022-11-25 17:15:14,095 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 150 places, 151 transitions, 317 flow [2022-11-25 17:15:14,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 150 places, 151 transitions, 317 flow [2022-11-25 17:15:14,149 INFO L130 PetriNetUnfolder]: 11/151 cut-off events. [2022-11-25 17:15:14,157 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 17:15:14,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163 conditions, 151 events. 11/151 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 163 event pairs, 0 based on Foata normal form. 0/132 useless extension candidates. Maximal degree in co-relation 129. Up to 2 conditions per place. [2022-11-25 17:15:14,164 INFO L119 LiptonReduction]: Number of co-enabled transitions 2688 [2022-11-25 17:15:21,360 INFO L134 LiptonReduction]: Checked pairs total: 2996 [2022-11-25 17:15:21,361 INFO L136 LiptonReduction]: Total number of compositions: 153 [2022-11-25 17:15:21,377 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:15:21,384 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;@a196838, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:15:21,385 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-11-25 17:15:21,388 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-11-25 17:15:21,389 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 17:15:21,389 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:15:21,390 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-25 17:15:21,390 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-25 17:15:21,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:15:21,395 INFO L85 PathProgramCache]: Analyzing trace with hash 20386, now seen corresponding path program 1 times [2022-11-25 17:15:21,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:15:21,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425490931] [2022-11-25 17:15:21,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:15:21,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:15:21,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:21,733 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 17:15:21,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:15:21,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425490931] [2022-11-25 17:15:21,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425490931] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:15:21,736 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:15:21,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 17:15:21,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035560729] [2022-11-25 17:15:21,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:15:21,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:15:21,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:15:21,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:15:21,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:15:21,813 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 328 [2022-11-25 17:15:21,816 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 30 transitions, 75 flow. Second operand has 3 states, 3 states have (on average 157.66666666666666) internal successors, (473), 3 states have internal predecessors, (473), 0 states have call successors, (0), 0 states 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 17:15:21,817 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:15:21,817 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 328 [2022-11-25 17:15:21,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:15:22,337 INFO L130 PetriNetUnfolder]: 2441/3187 cut-off events. [2022-11-25 17:15:22,337 INFO L131 PetriNetUnfolder]: For 92/92 co-relation queries the response was YES. [2022-11-25 17:15:22,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6502 conditions, 3187 events. 2441/3187 cut-off events. For 92/92 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 13703 event pairs, 1155 based on Foata normal form. 0/1141 useless extension candidates. Maximal degree in co-relation 2744. Up to 1566 conditions per place. [2022-11-25 17:15:22,366 INFO L137 encePairwiseOnDemand]: 324/328 looper letters, 49 selfloop transitions, 2 changer transitions 0/54 dead transitions. [2022-11-25 17:15:22,366 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 54 transitions, 240 flow [2022-11-25 17:15:22,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:15:22,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:15:22,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 524 transitions. [2022-11-25 17:15:22,383 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.532520325203252 [2022-11-25 17:15:22,384 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 524 transitions. [2022-11-25 17:15:22,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 524 transitions. [2022-11-25 17:15:22,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:15:22,390 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 524 transitions. [2022-11-25 17:15:22,394 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 174.66666666666666) internal successors, (524), 3 states have internal predecessors, (524), 0 states have call successors, (0), 0 states 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 17:15:22,401 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 328.0) internal successors, (1312), 4 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:15:22,402 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 328.0) internal successors, (1312), 4 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:15:22,404 INFO L175 Difference]: Start difference. First operand has 36 places, 30 transitions, 75 flow. Second operand 3 states and 524 transitions. [2022-11-25 17:15:22,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 54 transitions, 240 flow [2022-11-25 17:15:22,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 54 transitions, 222 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-25 17:15:22,417 INFO L231 Difference]: Finished difference. Result has 34 places, 31 transitions, 80 flow [2022-11-25 17:15:22,420 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=34, PETRI_TRANSITIONS=31} [2022-11-25 17:15:22,423 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, -2 predicate places. [2022-11-25 17:15:22,424 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 31 transitions, 80 flow [2022-11-25 17:15:22,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 157.66666666666666) internal successors, (473), 3 states have internal predecessors, (473), 0 states have call successors, (0), 0 states 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 17:15:22,425 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:15:22,425 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-25 17:15:22,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 17:15:22,425 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-25 17:15:22,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:15:22,426 INFO L85 PathProgramCache]: Analyzing trace with hash 633163, now seen corresponding path program 1 times [2022-11-25 17:15:22,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:15:22,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047878778] [2022-11-25 17:15:22,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:15:22,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:15:22,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:22,540 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 17:15:22,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:15:22,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047878778] [2022-11-25 17:15:22,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047878778] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:15:22,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [97114812] [2022-11-25 17:15:22,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:15:22,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:15:22,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b607b58b-2a7a-4448-9d9c-fca5bacec794/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:15:22,545 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b607b58b-2a7a-4448-9d9c-fca5bacec794/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:15:22,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b607b58b-2a7a-4448-9d9c-fca5bacec794/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 17:15:22,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:22,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 17:15:22,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:15:22,710 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:15:22,710 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:15:22,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [97114812] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:15:22,711 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:15:22,711 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2022-11-25 17:15:22,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065391551] [2022-11-25 17:15:22,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:15:22,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:15:22,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:15:22,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:15:22,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:15:22,735 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 328 [2022-11-25 17:15:22,736 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 31 transitions, 80 flow. Second operand has 4 states, 4 states have (on average 157.75) internal successors, (631), 4 states have internal predecessors, (631), 0 states have call successors, (0), 0 states 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 17:15:22,737 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:15:22,737 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 328 [2022-11-25 17:15:22,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:15:23,220 INFO L130 PetriNetUnfolder]: 2441/3186 cut-off events. [2022-11-25 17:15:23,221 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-11-25 17:15:23,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6432 conditions, 3186 events. 2441/3186 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 13702 event pairs, 1155 based on Foata normal form. 0/1143 useless extension candidates. Maximal degree in co-relation 3216. Up to 1566 conditions per place. [2022-11-25 17:15:23,245 INFO L137 encePairwiseOnDemand]: 325/328 looper letters, 48 selfloop transitions, 2 changer transitions 0/53 dead transitions. [2022-11-25 17:15:23,245 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 53 transitions, 228 flow [2022-11-25 17:15:23,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:15:23,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 17:15:23,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 679 transitions. [2022-11-25 17:15:23,248 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5175304878048781 [2022-11-25 17:15:23,249 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 679 transitions. [2022-11-25 17:15:23,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 679 transitions. [2022-11-25 17:15:23,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:15:23,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 679 transitions. [2022-11-25 17:15:23,251 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 169.75) internal successors, (679), 4 states have internal predecessors, (679), 0 states have call successors, (0), 0 states 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 17:15:23,255 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 328.0) internal successors, (1640), 5 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states 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 17:15:23,256 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 328.0) internal successors, (1640), 5 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states 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 17:15:23,256 INFO L175 Difference]: Start difference. First operand has 34 places, 31 transitions, 80 flow. Second operand 4 states and 679 transitions. [2022-11-25 17:15:23,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 53 transitions, 228 flow [2022-11-25 17:15:23,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 53 transitions, 226 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:15:23,258 INFO L231 Difference]: Finished difference. Result has 35 places, 30 transitions, 78 flow [2022-11-25 17:15:23,258 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=78, PETRI_PLACES=35, PETRI_TRANSITIONS=30} [2022-11-25 17:15:23,259 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, -1 predicate places. [2022-11-25 17:15:23,259 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 30 transitions, 78 flow [2022-11-25 17:15:23,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 157.75) internal successors, (631), 4 states have internal predecessors, (631), 0 states have call successors, (0), 0 states 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 17:15:23,260 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:15:23,260 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-25 17:15:23,272 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b607b58b-2a7a-4448-9d9c-fca5bacec794/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 17:15:23,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b607b58b-2a7a-4448-9d9c-fca5bacec794/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:15:23,467 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-25 17:15:23,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:15:23,469 INFO L85 PathProgramCache]: Analyzing trace with hash 633162, now seen corresponding path program 1 times [2022-11-25 17:15:23,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:15:23,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373953583] [2022-11-25 17:15:23,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:15:23,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:15:23,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:23,621 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 17:15:23,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:15:23,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373953583] [2022-11-25 17:15:23,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373953583] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:15:23,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253028531] [2022-11-25 17:15:23,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:15:23,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:15:23,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b607b58b-2a7a-4448-9d9c-fca5bacec794/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:15:23,624 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b607b58b-2a7a-4448-9d9c-fca5bacec794/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:15:23,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b607b58b-2a7a-4448-9d9c-fca5bacec794/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 17:15:23,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:23,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 17:15:23,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:15:23,734 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 17:15:23,735 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:15:23,764 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 17:15:23,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1253028531] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:15:23,765 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:15:23,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2022-11-25 17:15:23,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681627637] [2022-11-25 17:15:23,766 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:15:23,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:15:23,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:15:23,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:15:23,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:15:23,823 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 328 [2022-11-25 17:15:23,825 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 30 transitions, 78 flow. Second operand has 7 states, 7 states have (on average 158.14285714285714) internal successors, (1107), 7 states have internal predecessors, (1107), 0 states have call successors, (0), 0 states 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 17:15:23,825 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:15:23,825 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 328 [2022-11-25 17:15:23,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:15:24,913 INFO L130 PetriNetUnfolder]: 6089/7950 cut-off events. [2022-11-25 17:15:24,914 INFO L131 PetriNetUnfolder]: For 25/25 co-relation queries the response was YES. [2022-11-25 17:15:24,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16039 conditions, 7950 events. 6089/7950 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 579. Compared 38619 event pairs, 2886 based on Foata normal form. 0/2892 useless extension candidates. Maximal degree in co-relation 12811. Up to 1566 conditions per place. [2022-11-25 17:15:24,980 INFO L137 encePairwiseOnDemand]: 325/328 looper letters, 117 selfloop transitions, 5 changer transitions 0/125 dead transitions. [2022-11-25 17:15:24,981 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 125 transitions, 542 flow [2022-11-25 17:15:24,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:15:24,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 17:15:24,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1067 transitions. [2022-11-25 17:15:24,987 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5421747967479674 [2022-11-25 17:15:24,987 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1067 transitions. [2022-11-25 17:15:24,988 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1067 transitions. [2022-11-25 17:15:24,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:15:24,989 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1067 transitions. [2022-11-25 17:15:24,992 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 177.83333333333334) internal successors, (1067), 6 states have internal predecessors, (1067), 0 states have call successors, (0), 0 states 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 17:15:24,997 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 328.0) internal successors, (2296), 7 states have internal predecessors, (2296), 0 states have call successors, (0), 0 states 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 17:15:24,999 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 328.0) internal successors, (2296), 7 states have internal predecessors, (2296), 0 states have call successors, (0), 0 states 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 17:15:25,000 INFO L175 Difference]: Start difference. First operand has 35 places, 30 transitions, 78 flow. Second operand 6 states and 1067 transitions. [2022-11-25 17:15:25,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 125 transitions, 542 flow [2022-11-25 17:15:25,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 125 transitions, 539 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 17:15:25,006 INFO L231 Difference]: Finished difference. Result has 41 places, 33 transitions, 111 flow [2022-11-25 17:15:25,006 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=111, PETRI_PLACES=41, PETRI_TRANSITIONS=33} [2022-11-25 17:15:25,008 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 5 predicate places. [2022-11-25 17:15:25,009 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 33 transitions, 111 flow [2022-11-25 17:15:25,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 158.14285714285714) internal successors, (1107), 7 states have internal predecessors, (1107), 0 states have call successors, (0), 0 states 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 17:15:25,010 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:15:25,010 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 17:15:25,021 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b607b58b-2a7a-4448-9d9c-fca5bacec794/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 17:15:25,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b607b58b-2a7a-4448-9d9c-fca5bacec794/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:15:25,221 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-25 17:15:25,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:15:25,222 INFO L85 PathProgramCache]: Analyzing trace with hash 608567152, now seen corresponding path program 1 times [2022-11-25 17:15:25,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:15:25,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704345779] [2022-11-25 17:15:25,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:15:25,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:15:25,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:25,300 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 17:15:25,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:15:25,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704345779] [2022-11-25 17:15:25,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704345779] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:15:25,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:15:25,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:15:25,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482316221] [2022-11-25 17:15:25,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:15:25,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:15:25,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:15:25,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:15:25,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:15:25,316 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 328 [2022-11-25 17:15:25,317 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 33 transitions, 111 flow. Second operand has 3 states, 3 states have (on average 159.66666666666666) internal successors, (479), 3 states have internal predecessors, (479), 0 states have call successors, (0), 0 states 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 17:15:25,317 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:15:25,317 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 328 [2022-11-25 17:15:25,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:15:26,544 INFO L130 PetriNetUnfolder]: 8331/11112 cut-off events. [2022-11-25 17:15:26,545 INFO L131 PetriNetUnfolder]: For 121/121 co-relation queries the response was YES. [2022-11-25 17:15:26,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22506 conditions, 11112 events. 8331/11112 cut-off events. For 121/121 co-relation queries the response was YES. Maximal size of possible extension queue 802. Compared 59793 event pairs, 1930 based on Foata normal form. 0/4452 useless extension candidates. Maximal degree in co-relation 17997. Up to 7078 conditions per place. [2022-11-25 17:15:26,614 INFO L137 encePairwiseOnDemand]: 324/328 looper letters, 48 selfloop transitions, 2 changer transitions 0/52 dead transitions. [2022-11-25 17:15:26,614 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 52 transitions, 254 flow [2022-11-25 17:15:26,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:15:26,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:15:26,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 522 transitions. [2022-11-25 17:15:26,617 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5304878048780488 [2022-11-25 17:15:26,617 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 522 transitions. [2022-11-25 17:15:26,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 522 transitions. [2022-11-25 17:15:26,618 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:15:26,618 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 522 transitions. [2022-11-25 17:15:26,620 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 0 states have call successors, (0), 0 states 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 17:15:26,622 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 328.0) internal successors, (1312), 4 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:15:26,623 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 328.0) internal successors, (1312), 4 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:15:26,623 INFO L175 Difference]: Start difference. First operand has 41 places, 33 transitions, 111 flow. Second operand 3 states and 522 transitions. [2022-11-25 17:15:26,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 52 transitions, 254 flow [2022-11-25 17:15:26,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 52 transitions, 246 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-11-25 17:15:26,626 INFO L231 Difference]: Finished difference. Result has 43 places, 34 transitions, 117 flow [2022-11-25 17:15:26,626 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=117, PETRI_PLACES=43, PETRI_TRANSITIONS=34} [2022-11-25 17:15:26,627 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 7 predicate places. [2022-11-25 17:15:26,627 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 34 transitions, 117 flow [2022-11-25 17:15:26,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 159.66666666666666) internal successors, (479), 3 states have internal predecessors, (479), 0 states have call successors, (0), 0 states 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 17:15:26,628 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:15:26,628 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2022-11-25 17:15:26,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 17:15:26,629 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-25 17:15:26,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:15:26,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1683878369, now seen corresponding path program 2 times [2022-11-25 17:15:26,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:15:26,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628502099] [2022-11-25 17:15:26,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:15:26,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:15:26,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:26,755 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 17:15:26,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:15:26,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628502099] [2022-11-25 17:15:26,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628502099] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:15:26,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933652378] [2022-11-25 17:15:26,757 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 17:15:26,757 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:15:26,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b607b58b-2a7a-4448-9d9c-fca5bacec794/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:15:26,758 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b607b58b-2a7a-4448-9d9c-fca5bacec794/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:15:26,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b607b58b-2a7a-4448-9d9c-fca5bacec794/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 17:15:26,845 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-25 17:15:26,845 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:15:26,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 17:15:26,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:15:26,866 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 17:15:26,867 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:15:26,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [933652378] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:15:26,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:15:26,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2022-11-25 17:15:26,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088880382] [2022-11-25 17:15:26,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:15:26,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:15:26,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:15:26,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:15:26,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-25 17:15:26,882 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 328 [2022-11-25 17:15:26,883 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 34 transitions, 117 flow. Second operand has 3 states, 3 states have (on average 159.0) internal successors, (477), 3 states have internal predecessors, (477), 0 states have call successors, (0), 0 states 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 17:15:26,883 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:15:26,883 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 328 [2022-11-25 17:15:26,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:15:27,866 INFO L130 PetriNetUnfolder]: 7076/9551 cut-off events. [2022-11-25 17:15:27,866 INFO L131 PetriNetUnfolder]: For 603/873 co-relation queries the response was YES. [2022-11-25 17:15:27,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20693 conditions, 9551 events. 7076/9551 cut-off events. For 603/873 co-relation queries the response was YES. Maximal size of possible extension queue 714. Compared 52054 event pairs, 3890 based on Foata normal form. 271/4492 useless extension candidates. Maximal degree in co-relation 16544. Up to 9381 conditions per place. [2022-11-25 17:15:27,930 INFO L137 encePairwiseOnDemand]: 326/328 looper letters, 29 selfloop transitions, 1 changer transitions 0/33 dead transitions. [2022-11-25 17:15:27,930 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 33 transitions, 167 flow [2022-11-25 17:15:27,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:15:27,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:15:27,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 500 transitions. [2022-11-25 17:15:27,932 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.508130081300813 [2022-11-25 17:15:27,932 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 500 transitions. [2022-11-25 17:15:27,932 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 500 transitions. [2022-11-25 17:15:27,933 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:15:27,933 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 500 transitions. [2022-11-25 17:15:27,934 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 166.66666666666666) internal successors, (500), 3 states have internal predecessors, (500), 0 states have call successors, (0), 0 states 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 17:15:27,937 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 328.0) internal successors, (1312), 4 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:15:27,938 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 328.0) internal successors, (1312), 4 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:15:27,938 INFO L175 Difference]: Start difference. First operand has 43 places, 34 transitions, 117 flow. Second operand 3 states and 500 transitions. [2022-11-25 17:15:27,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 33 transitions, 167 flow [2022-11-25 17:15:27,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 33 transitions, 155 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-25 17:15:27,941 INFO L231 Difference]: Finished difference. Result has 39 places, 33 transitions, 97 flow [2022-11-25 17:15:27,941 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=97, PETRI_PLACES=39, PETRI_TRANSITIONS=33} [2022-11-25 17:15:27,943 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 3 predicate places. [2022-11-25 17:15:27,944 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 33 transitions, 97 flow [2022-11-25 17:15:27,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 159.0) internal successors, (477), 3 states have internal predecessors, (477), 0 states have call successors, (0), 0 states 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 17:15:27,944 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:15:27,944 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-25 17:15:27,964 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b607b58b-2a7a-4448-9d9c-fca5bacec794/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 17:15:28,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b607b58b-2a7a-4448-9d9c-fca5bacec794/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:15:28,150 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-25 17:15:28,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:15:28,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1685714061, now seen corresponding path program 1 times [2022-11-25 17:15:28,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:15:28,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871065799] [2022-11-25 17:15:28,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:15:28,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:15:28,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:28,259 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 17:15:28,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:15:28,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871065799] [2022-11-25 17:15:28,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871065799] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:15:28,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1464917040] [2022-11-25 17:15:28,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:15:28,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:15:28,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b607b58b-2a7a-4448-9d9c-fca5bacec794/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:15:28,262 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b607b58b-2a7a-4448-9d9c-fca5bacec794/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:15:28,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b607b58b-2a7a-4448-9d9c-fca5bacec794/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 17:15:28,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:28,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 17:15:28,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:15:28,404 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:15:28,404 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:15:28,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1464917040] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:15:28,404 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:15:28,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3] total 7 [2022-11-25 17:15:28,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557407532] [2022-11-25 17:15:28,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:15:28,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 17:15:28,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:15:28,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 17:15:28,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:15:28,499 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 328 [2022-11-25 17:15:28,500 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 33 transitions, 97 flow. Second operand has 5 states, 5 states have (on average 152.2) internal successors, (761), 5 states have internal predecessors, (761), 0 states have call successors, (0), 0 states 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 17:15:28,500 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:15:28,500 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 328 [2022-11-25 17:15:28,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:15:29,669 INFO L130 PetriNetUnfolder]: 6977/9407 cut-off events. [2022-11-25 17:15:29,669 INFO L131 PetriNetUnfolder]: For 731/731 co-relation queries the response was YES. [2022-11-25 17:15:29,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20197 conditions, 9407 events. 6977/9407 cut-off events. For 731/731 co-relation queries the response was YES. Maximal size of possible extension queue 694. Compared 50730 event pairs, 3615 based on Foata normal form. 52/4473 useless extension candidates. Maximal degree in co-relation 20188. Up to 8486 conditions per place. [2022-11-25 17:15:29,749 INFO L137 encePairwiseOnDemand]: 322/328 looper letters, 59 selfloop transitions, 4 changer transitions 0/65 dead transitions. [2022-11-25 17:15:29,749 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 65 transitions, 298 flow [2022-11-25 17:15:29,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 17:15:29,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 17:15:29,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 817 transitions. [2022-11-25 17:15:29,754 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49817073170731707 [2022-11-25 17:15:29,754 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 817 transitions. [2022-11-25 17:15:29,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 817 transitions. [2022-11-25 17:15:29,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:15:29,755 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 817 transitions. [2022-11-25 17:15:29,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 163.4) internal successors, (817), 5 states have internal predecessors, (817), 0 states have call successors, (0), 0 states 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 17:15:29,762 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 328.0) internal successors, (1968), 6 states have internal predecessors, (1968), 0 states have call successors, (0), 0 states 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 17:15:29,764 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 328.0) internal successors, (1968), 6 states have internal predecessors, (1968), 0 states have call successors, (0), 0 states 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 17:15:29,764 INFO L175 Difference]: Start difference. First operand has 39 places, 33 transitions, 97 flow. Second operand 5 states and 817 transitions. [2022-11-25 17:15:29,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 65 transitions, 298 flow [2022-11-25 17:15:29,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 65 transitions, 297 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:15:29,768 INFO L231 Difference]: Finished difference. Result has 45 places, 35 transitions, 126 flow [2022-11-25 17:15:29,769 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=126, PETRI_PLACES=45, PETRI_TRANSITIONS=35} [2022-11-25 17:15:29,769 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 9 predicate places. [2022-11-25 17:15:29,770 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 35 transitions, 126 flow [2022-11-25 17:15:29,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 152.2) internal successors, (761), 5 states have internal predecessors, (761), 0 states have call successors, (0), 0 states 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 17:15:29,771 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:15:29,771 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:15:29,778 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b607b58b-2a7a-4448-9d9c-fca5bacec794/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 17:15:29,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b607b58b-2a7a-4448-9d9c-fca5bacec794/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:15:29,977 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-25 17:15:29,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:15:29,978 INFO L85 PathProgramCache]: Analyzing trace with hash 662458805, now seen corresponding path program 1 times [2022-11-25 17:15:29,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:15:29,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122150024] [2022-11-25 17:15:29,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:15:29,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:15:30,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:30,054 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 17:15:30,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:15:30,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122150024] [2022-11-25 17:15:30,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122150024] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:15:30,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425219959] [2022-11-25 17:15:30,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:15:30,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:15:30,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b607b58b-2a7a-4448-9d9c-fca5bacec794/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:15:30,058 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b607b58b-2a7a-4448-9d9c-fca5bacec794/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:15:30,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b607b58b-2a7a-4448-9d9c-fca5bacec794/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 17:15:30,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:30,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 17:15:30,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:15:30,178 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 17:15:30,178 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:15:30,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1425219959] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:15:30,179 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:15:30,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-11-25 17:15:30,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900879164] [2022-11-25 17:15:30,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:15:30,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:15:30,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:15:30,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:15:30,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:15:30,195 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 328 [2022-11-25 17:15:30,196 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 35 transitions, 126 flow. Second operand has 4 states, 4 states have (on average 159.75) internal successors, (639), 4 states have internal predecessors, (639), 0 states have call successors, (0), 0 states 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 17:15:30,197 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:15:30,197 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 328 [2022-11-25 17:15:30,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:15:31,218 INFO L130 PetriNetUnfolder]: 6941/9123 cut-off events. [2022-11-25 17:15:31,218 INFO L131 PetriNetUnfolder]: For 3194/3209 co-relation queries the response was YES. [2022-11-25 17:15:31,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21425 conditions, 9123 events. 6941/9123 cut-off events. For 3194/3209 co-relation queries the response was YES. Maximal size of possible extension queue 661. Compared 45775 event pairs, 1251 based on Foata normal form. 2/4979 useless extension candidates. Maximal degree in co-relation 21412. Up to 4492 conditions per place. [2022-11-25 17:15:31,294 INFO L137 encePairwiseOnDemand]: 325/328 looper letters, 60 selfloop transitions, 3 changer transitions 0/65 dead transitions. [2022-11-25 17:15:31,295 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 65 transitions, 326 flow [2022-11-25 17:15:31,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:15:31,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 17:15:31,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 690 transitions. [2022-11-25 17:15:31,298 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5259146341463414 [2022-11-25 17:15:31,298 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 690 transitions. [2022-11-25 17:15:31,298 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 690 transitions. [2022-11-25 17:15:31,299 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:15:31,299 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 690 transitions. [2022-11-25 17:15:31,301 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 172.5) internal successors, (690), 4 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:15:31,303 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 328.0) internal successors, (1640), 5 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states 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 17:15:31,304 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 328.0) internal successors, (1640), 5 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states 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 17:15:31,304 INFO L175 Difference]: Start difference. First operand has 45 places, 35 transitions, 126 flow. Second operand 4 states and 690 transitions. [2022-11-25 17:15:31,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 65 transitions, 326 flow [2022-11-25 17:15:31,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 65 transitions, 320 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-11-25 17:15:31,310 INFO L231 Difference]: Finished difference. Result has 45 places, 34 transitions, 122 flow [2022-11-25 17:15:31,310 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=122, PETRI_PLACES=45, PETRI_TRANSITIONS=34} [2022-11-25 17:15:31,311 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 9 predicate places. [2022-11-25 17:15:31,311 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 34 transitions, 122 flow [2022-11-25 17:15:31,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 159.75) internal successors, (639), 4 states have internal predecessors, (639), 0 states have call successors, (0), 0 states 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 17:15:31,312 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:15:31,312 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:15:31,322 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b607b58b-2a7a-4448-9d9c-fca5bacec794/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-25 17:15:31,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b607b58b-2a7a-4448-9d9c-fca5bacec794/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-25 17:15:31,518 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-25 17:15:31,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:15:31,519 INFO L85 PathProgramCache]: Analyzing trace with hash 662458806, now seen corresponding path program 1 times [2022-11-25 17:15:31,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:15:31,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549889917] [2022-11-25 17:15:31,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:15:31,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:15:31,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:31,599 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 17:15:31,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:15:31,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549889917] [2022-11-25 17:15:31,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549889917] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:15:31,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1243124384] [2022-11-25 17:15:31,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:15:31,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:15:31,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b607b58b-2a7a-4448-9d9c-fca5bacec794/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:15:31,604 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b607b58b-2a7a-4448-9d9c-fca5bacec794/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:15:31,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b607b58b-2a7a-4448-9d9c-fca5bacec794/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-25 17:15:31,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:31,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 17:15:31,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:15:31,817 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 17:15:31,818 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:15:31,842 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 17:15:31,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1243124384] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:15:31,843 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:15:31,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-25 17:15:31,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886577942] [2022-11-25 17:15:31,844 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:15:31,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:15:31,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:15:31,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:15:31,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:15:31,875 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 328 [2022-11-25 17:15:31,877 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 34 transitions, 122 flow. Second operand has 7 states, 7 states have (on average 159.71428571428572) internal successors, (1118), 7 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states 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 17:15:31,877 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:15:31,877 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 328 [2022-11-25 17:15:31,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:15:33,480 INFO L130 PetriNetUnfolder]: 13993/18383 cut-off events. [2022-11-25 17:15:33,480 INFO L131 PetriNetUnfolder]: For 5806/5881 co-relation queries the response was YES. [2022-11-25 17:15:33,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42904 conditions, 18383 events. 13993/18383 cut-off events. For 5806/5881 co-relation queries the response was YES. Maximal size of possible extension queue 1015. Compared 101701 event pairs, 2039 based on Foata normal form. 10/10307 useless extension candidates. Maximal degree in co-relation 42892. Up to 5156 conditions per place. [2022-11-25 17:15:33,610 INFO L137 encePairwiseOnDemand]: 325/328 looper letters, 101 selfloop transitions, 6 changer transitions 0/109 dead transitions. [2022-11-25 17:15:33,610 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 109 transitions, 528 flow [2022-11-25 17:15:33,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:15:33,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 17:15:33,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1052 transitions. [2022-11-25 17:15:33,614 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5345528455284553 [2022-11-25 17:15:33,615 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1052 transitions. [2022-11-25 17:15:33,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1052 transitions. [2022-11-25 17:15:33,616 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:15:33,616 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1052 transitions. [2022-11-25 17:15:33,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 175.33333333333334) internal successors, (1052), 6 states have internal predecessors, (1052), 0 states have call successors, (0), 0 states 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 17:15:33,622 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 328.0) internal successors, (2296), 7 states have internal predecessors, (2296), 0 states have call successors, (0), 0 states 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 17:15:33,623 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 328.0) internal successors, (2296), 7 states have internal predecessors, (2296), 0 states have call successors, (0), 0 states 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 17:15:33,623 INFO L175 Difference]: Start difference. First operand has 45 places, 34 transitions, 122 flow. Second operand 6 states and 1052 transitions. [2022-11-25 17:15:33,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 109 transitions, 528 flow [2022-11-25 17:15:33,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 109 transitions, 523 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 17:15:33,629 INFO L231 Difference]: Finished difference. Result has 51 places, 37 transitions, 155 flow [2022-11-25 17:15:33,630 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=155, PETRI_PLACES=51, PETRI_TRANSITIONS=37} [2022-11-25 17:15:33,630 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 15 predicate places. [2022-11-25 17:15:33,630 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 37 transitions, 155 flow [2022-11-25 17:15:33,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 159.71428571428572) internal successors, (1118), 7 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states 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 17:15:33,631 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:15:33,632 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:15:33,644 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b607b58b-2a7a-4448-9d9c-fca5bacec794/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-25 17:15:33,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b607b58b-2a7a-4448-9d9c-fca5bacec794/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-25 17:15:33,845 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-25 17:15:33,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:15:33,845 INFO L85 PathProgramCache]: Analyzing trace with hash 722918164, now seen corresponding path program 1 times [2022-11-25 17:15:33,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:15:33,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027882971] [2022-11-25 17:15:33,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:15:33,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:15:33,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:34,046 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 17:15:34,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:15:34,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027882971] [2022-11-25 17:15:34,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027882971] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:15:34,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:15:34,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:15:34,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636712438] [2022-11-25 17:15:34,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:15:34,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:15:34,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:15:34,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:15:34,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 17:15:34,059 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 328 [2022-11-25 17:15:34,060 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 37 transitions, 155 flow. Second operand has 3 states, 3 states have (on average 160.33333333333334) internal successors, (481), 3 states have internal predecessors, (481), 0 states have call successors, (0), 0 states 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 17:15:34,061 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:15:34,061 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 328 [2022-11-25 17:15:34,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:15:36,151 INFO L130 PetriNetUnfolder]: 15586/21457 cut-off events. [2022-11-25 17:15:36,151 INFO L131 PetriNetUnfolder]: For 15213/16086 co-relation queries the response was YES. [2022-11-25 17:15:36,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54345 conditions, 21457 events. 15586/21457 cut-off events. For 15213/16086 co-relation queries the response was YES. Maximal size of possible extension queue 1331. Compared 136187 event pairs, 7217 based on Foata normal form. 868/15021 useless extension candidates. Maximal degree in co-relation 54330. Up to 15039 conditions per place. [2022-11-25 17:15:36,337 INFO L137 encePairwiseOnDemand]: 324/328 looper letters, 52 selfloop transitions, 2 changer transitions 0/57 dead transitions. [2022-11-25 17:15:36,337 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 57 transitions, 348 flow [2022-11-25 17:15:36,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:15:36,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:15:36,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 517 transitions. [2022-11-25 17:15:36,340 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5254065040650406 [2022-11-25 17:15:36,340 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 517 transitions. [2022-11-25 17:15:36,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 517 transitions. [2022-11-25 17:15:36,340 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:15:36,340 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 517 transitions. [2022-11-25 17:15:36,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 172.33333333333334) internal successors, (517), 3 states have internal predecessors, (517), 0 states have call successors, (0), 0 states 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 17:15:36,343 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 328.0) internal successors, (1312), 4 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:15:36,344 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 328.0) internal successors, (1312), 4 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:15:36,344 INFO L175 Difference]: Start difference. First operand has 51 places, 37 transitions, 155 flow. Second operand 3 states and 517 transitions. [2022-11-25 17:15:36,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 57 transitions, 348 flow [2022-11-25 17:15:36,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 57 transitions, 332 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-11-25 17:15:36,361 INFO L231 Difference]: Finished difference. Result has 53 places, 38 transitions, 160 flow [2022-11-25 17:15:36,362 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=53, PETRI_TRANSITIONS=38} [2022-11-25 17:15:36,362 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 17 predicate places. [2022-11-25 17:15:36,363 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 38 transitions, 160 flow [2022-11-25 17:15:36,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 160.33333333333334) internal successors, (481), 3 states have internal predecessors, (481), 0 states have call successors, (0), 0 states 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 17:15:36,363 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:15:36,363 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:15:36,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 17:15:36,364 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-25 17:15:36,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:15:36,364 INFO L85 PathProgramCache]: Analyzing trace with hash 935627172, now seen corresponding path program 1 times [2022-11-25 17:15:36,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:15:36,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081777380] [2022-11-25 17:15:36,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:15:36,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:15:36,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:36,412 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 17:15:36,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:15:36,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081777380] [2022-11-25 17:15:36,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081777380] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:15:36,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [61691907] [2022-11-25 17:15:36,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:15:36,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:15:36,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b607b58b-2a7a-4448-9d9c-fca5bacec794/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:15:36,414 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b607b58b-2a7a-4448-9d9c-fca5bacec794/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:15:36,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b607b58b-2a7a-4448-9d9c-fca5bacec794/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-25 17:15:36,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:36,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 17:15:36,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:15:36,524 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:15:36,525 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:15:36,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [61691907] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:15:36,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:15:36,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-11-25 17:15:36,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756235854] [2022-11-25 17:15:36,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:15:36,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:15:36,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:15:36,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:15:36,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 17:15:36,548 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 328 [2022-11-25 17:15:36,550 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 38 transitions, 160 flow. Second operand has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 0 states 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 17:15:36,550 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:15:36,550 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 328 [2022-11-25 17:15:36,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:15:38,233 INFO L130 PetriNetUnfolder]: 13611/18718 cut-off events. [2022-11-25 17:15:38,234 INFO L131 PetriNetUnfolder]: For 15175/15938 co-relation queries the response was YES. [2022-11-25 17:15:38,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50288 conditions, 18718 events. 13611/18718 cut-off events. For 15175/15938 co-relation queries the response was YES. Maximal size of possible extension queue 1152. Compared 118582 event pairs, 878 based on Foata normal form. 762/15058 useless extension candidates. Maximal degree in co-relation 50271. Up to 10082 conditions per place. [2022-11-25 17:15:38,347 INFO L137 encePairwiseOnDemand]: 325/328 looper letters, 67 selfloop transitions, 2 changer transitions 0/72 dead transitions. [2022-11-25 17:15:38,347 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 72 transitions, 439 flow [2022-11-25 17:15:38,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:15:38,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 17:15:38,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 685 transitions. [2022-11-25 17:15:38,350 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5221036585365854 [2022-11-25 17:15:38,350 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 685 transitions. [2022-11-25 17:15:38,350 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 685 transitions. [2022-11-25 17:15:38,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:15:38,351 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 685 transitions. [2022-11-25 17:15:38,353 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 171.25) internal successors, (685), 4 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:15:38,356 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 328.0) internal successors, (1640), 5 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states 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 17:15:38,357 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 328.0) internal successors, (1640), 5 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states 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 17:15:38,357 INFO L175 Difference]: Start difference. First operand has 53 places, 38 transitions, 160 flow. Second operand 4 states and 685 transitions. [2022-11-25 17:15:38,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 72 transitions, 439 flow [2022-11-25 17:15:38,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 72 transitions, 437 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 17:15:38,376 INFO L231 Difference]: Finished difference. Result has 54 places, 37 transitions, 158 flow [2022-11-25 17:15:38,376 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=158, PETRI_PLACES=54, PETRI_TRANSITIONS=37} [2022-11-25 17:15:38,376 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 18 predicate places. [2022-11-25 17:15:38,377 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 37 transitions, 158 flow [2022-11-25 17:15:38,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 0 states 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 17:15:38,377 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:15:38,377 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:15:38,388 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b607b58b-2a7a-4448-9d9c-fca5bacec794/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-25 17:15:38,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b607b58b-2a7a-4448-9d9c-fca5bacec794/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-25 17:15:38,583 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-25 17:15:38,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:15:38,583 INFO L85 PathProgramCache]: Analyzing trace with hash 935627173, now seen corresponding path program 1 times [2022-11-25 17:15:38,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:15:38,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452390575] [2022-11-25 17:15:38,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:15:38,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:15:38,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:38,658 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 17:15:38,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:15:38,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452390575] [2022-11-25 17:15:38,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452390575] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:15:38,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626868981] [2022-11-25 17:15:38,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:15:38,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:15:38,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b607b58b-2a7a-4448-9d9c-fca5bacec794/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:15:38,660 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b607b58b-2a7a-4448-9d9c-fca5bacec794/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:15:38,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b607b58b-2a7a-4448-9d9c-fca5bacec794/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-25 17:15:38,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:38,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 17:15:38,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:15:38,769 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 17:15:38,770 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 17:15:38,799 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 17:15:38,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [626868981] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 17:15:38,799 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 17:15:38,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-25 17:15:38,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203430478] [2022-11-25 17:15:38,799 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 17:15:38,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 17:15:38,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:15:38,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 17:15:38,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-25 17:15:38,832 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 328 [2022-11-25 17:15:38,834 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 37 transitions, 158 flow. Second operand has 7 states, 7 states have (on average 159.85714285714286) internal successors, (1119), 7 states have internal predecessors, (1119), 0 states have call successors, (0), 0 states 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 17:15:38,834 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:15:38,834 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 328 [2022-11-25 17:15:38,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:15:42,146 INFO L130 PetriNetUnfolder]: 27414/37729 cut-off events. [2022-11-25 17:15:42,146 INFO L131 PetriNetUnfolder]: For 29047/30570 co-relation queries the response was YES. [2022-11-25 17:15:42,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100302 conditions, 37729 events. 27414/37729 cut-off events. For 29047/30570 co-relation queries the response was YES. Maximal size of possible extension queue 2028. Compared 255964 event pairs, 5663 based on Foata normal form. 1521/31032 useless extension candidates. Maximal degree in co-relation 100285. Up to 12135 conditions per place. [2022-11-25 17:15:42,349 INFO L137 encePairwiseOnDemand]: 325/328 looper letters, 108 selfloop transitions, 5 changer transitions 0/116 dead transitions. [2022-11-25 17:15:42,349 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 116 transitions, 700 flow [2022-11-25 17:15:42,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:15:42,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 17:15:42,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1039 transitions. [2022-11-25 17:15:42,353 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5279471544715447 [2022-11-25 17:15:42,353 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1039 transitions. [2022-11-25 17:15:42,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1039 transitions. [2022-11-25 17:15:42,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:15:42,354 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1039 transitions. [2022-11-25 17:15:42,357 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 173.16666666666666) internal successors, (1039), 6 states have internal predecessors, (1039), 0 states have call successors, (0), 0 states 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 17:15:42,361 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 328.0) internal successors, (2296), 7 states have internal predecessors, (2296), 0 states have call successors, (0), 0 states 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 17:15:42,363 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 328.0) internal successors, (2296), 7 states have internal predecessors, (2296), 0 states have call successors, (0), 0 states 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 17:15:42,363 INFO L175 Difference]: Start difference. First operand has 54 places, 37 transitions, 158 flow. Second operand 6 states and 1039 transitions. [2022-11-25 17:15:42,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 116 transitions, 700 flow [2022-11-25 17:15:42,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 116 transitions, 697 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 17:15:42,399 INFO L231 Difference]: Finished difference. Result has 60 places, 40 transitions, 191 flow [2022-11-25 17:15:42,400 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=191, PETRI_PLACES=60, PETRI_TRANSITIONS=40} [2022-11-25 17:15:42,400 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 24 predicate places. [2022-11-25 17:15:42,401 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 40 transitions, 191 flow [2022-11-25 17:15:42,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 159.85714285714286) internal successors, (1119), 7 states have internal predecessors, (1119), 0 states have call successors, (0), 0 states 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 17:15:42,401 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:15:42,402 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:15:42,408 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b607b58b-2a7a-4448-9d9c-fca5bacec794/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-11-25 17:15:42,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b607b58b-2a7a-4448-9d9c-fca5bacec794/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-25 17:15:42,607 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-25 17:15:42,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:15:42,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1055707111, now seen corresponding path program 1 times [2022-11-25 17:15:42,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:15:42,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838160266] [2022-11-25 17:15:42,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:15:42,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:15:42,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:42,655 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 17:15:42,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:15:42,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838160266] [2022-11-25 17:15:42,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838160266] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:15:42,656 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:15:42,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 17:15:42,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785272863] [2022-11-25 17:15:42,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:15:42,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 17:15:42,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:15:42,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 17:15:42,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 17:15:42,681 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 328 [2022-11-25 17:15:42,682 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 40 transitions, 191 flow. Second operand has 4 states, 4 states have (on average 158.25) internal successors, (633), 4 states have internal predecessors, (633), 0 states have call successors, (0), 0 states 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 17:15:42,682 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:15:42,682 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 328 [2022-11-25 17:15:42,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:15:44,958 INFO L130 PetriNetUnfolder]: 16612/24497 cut-off events. [2022-11-25 17:15:44,959 INFO L131 PetriNetUnfolder]: For 35354/37555 co-relation queries the response was YES. [2022-11-25 17:15:45,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71955 conditions, 24497 events. 16612/24497 cut-off events. For 35354/37555 co-relation queries the response was YES. Maximal size of possible extension queue 1035. Compared 167942 event pairs, 3733 based on Foata normal form. 2201/24918 useless extension candidates. Maximal degree in co-relation 71935. Up to 17532 conditions per place. [2022-11-25 17:15:45,147 INFO L137 encePairwiseOnDemand]: 325/328 looper letters, 53 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2022-11-25 17:15:45,148 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 58 transitions, 404 flow [2022-11-25 17:15:45,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 17:15:45,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 17:15:45,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 659 transitions. [2022-11-25 17:15:45,156 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5022865853658537 [2022-11-25 17:15:45,156 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 659 transitions. [2022-11-25 17:15:45,156 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 659 transitions. [2022-11-25 17:15:45,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:15:45,157 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 659 transitions. [2022-11-25 17:15:45,159 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 164.75) internal successors, (659), 4 states have internal predecessors, (659), 0 states have call successors, (0), 0 states 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 17:15:45,162 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 328.0) internal successors, (1640), 5 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states 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 17:15:45,163 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 328.0) internal successors, (1640), 5 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states 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 17:15:45,163 INFO L175 Difference]: Start difference. First operand has 60 places, 40 transitions, 191 flow. Second operand 4 states and 659 transitions. [2022-11-25 17:15:45,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 58 transitions, 404 flow [2022-11-25 17:15:45,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 58 transitions, 389 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-11-25 17:15:45,209 INFO L231 Difference]: Finished difference. Result has 61 places, 39 transitions, 185 flow [2022-11-25 17:15:45,210 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=185, PETRI_PLACES=61, PETRI_TRANSITIONS=39} [2022-11-25 17:15:45,210 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 25 predicate places. [2022-11-25 17:15:45,210 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 39 transitions, 185 flow [2022-11-25 17:15:45,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 158.25) internal successors, (633), 4 states have internal predecessors, (633), 0 states have call successors, (0), 0 states 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 17:15:45,211 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:15:45,211 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:15:45,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-25 17:15:45,212 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-25 17:15:45,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:15:45,212 INFO L85 PathProgramCache]: Analyzing trace with hash 824858193, now seen corresponding path program 1 times [2022-11-25 17:15:45,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:15:45,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617569171] [2022-11-25 17:15:45,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:15:45,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:15:45,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:45,353 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 17:15:45,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:15:45,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617569171] [2022-11-25 17:15:45,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617569171] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:15:45,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473025470] [2022-11-25 17:15:45,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:15:45,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:15:45,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b607b58b-2a7a-4448-9d9c-fca5bacec794/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:15:45,355 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b607b58b-2a7a-4448-9d9c-fca5bacec794/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:15:45,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b607b58b-2a7a-4448-9d9c-fca5bacec794/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-25 17:15:45,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:45,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 17:15:45,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:15:45,483 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 17:15:45,483 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:15:45,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [473025470] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:15:45,484 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:15:45,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2022-11-25 17:15:45,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043522750] [2022-11-25 17:15:45,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:15:45,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:15:45,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:15:45,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:15:45,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:15:45,500 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 328 [2022-11-25 17:15:45,501 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 39 transitions, 185 flow. Second operand has 3 states, 3 states have (on average 161.0) internal successors, (483), 3 states have internal predecessors, (483), 0 states have call successors, (0), 0 states 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 17:15:45,501 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:15:45,501 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 328 [2022-11-25 17:15:45,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:15:47,233 INFO L130 PetriNetUnfolder]: 13492/19321 cut-off events. [2022-11-25 17:15:47,234 INFO L131 PetriNetUnfolder]: For 24750/26569 co-relation queries the response was YES. [2022-11-25 17:15:47,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50715 conditions, 19321 events. 13492/19321 cut-off events. For 24750/26569 co-relation queries the response was YES. Maximal size of possible extension queue 1027. Compared 126416 event pairs, 9549 based on Foata normal form. 5054/21141 useless extension candidates. Maximal degree in co-relation 50693. Up to 19226 conditions per place. [2022-11-25 17:15:47,343 INFO L137 encePairwiseOnDemand]: 325/328 looper letters, 29 selfloop transitions, 1 changer transitions 3/37 dead transitions. [2022-11-25 17:15:47,343 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 37 transitions, 235 flow [2022-11-25 17:15:47,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:15:47,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:15:47,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 496 transitions. [2022-11-25 17:15:47,346 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5040650406504065 [2022-11-25 17:15:47,346 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 496 transitions. [2022-11-25 17:15:47,346 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 496 transitions. [2022-11-25 17:15:47,347 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:15:47,347 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 496 transitions. [2022-11-25 17:15:47,348 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.33333333333334) internal successors, (496), 3 states have internal predecessors, (496), 0 states have call successors, (0), 0 states 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 17:15:47,350 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 328.0) internal successors, (1312), 4 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:15:47,351 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 328.0) internal successors, (1312), 4 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:15:47,351 INFO L175 Difference]: Start difference. First operand has 61 places, 39 transitions, 185 flow. Second operand 3 states and 496 transitions. [2022-11-25 17:15:47,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 37 transitions, 235 flow [2022-11-25 17:15:47,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 37 transitions, 221 flow, removed 1 selfloop flow, removed 6 redundant places. [2022-11-25 17:15:47,383 INFO L231 Difference]: Finished difference. Result has 55 places, 34 transitions, 150 flow [2022-11-25 17:15:47,383 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=55, PETRI_TRANSITIONS=34} [2022-11-25 17:15:47,384 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 19 predicate places. [2022-11-25 17:15:47,384 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 34 transitions, 150 flow [2022-11-25 17:15:47,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 161.0) internal successors, (483), 3 states have internal predecessors, (483), 0 states have call successors, (0), 0 states 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 17:15:47,385 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 17:15:47,385 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:15:47,389 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b607b58b-2a7a-4448-9d9c-fca5bacec794/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-25 17:15:47,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b607b58b-2a7a-4448-9d9c-fca5bacec794/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-25 17:15:47,585 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-25 17:15:47,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:15:47,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1068105963, now seen corresponding path program 2 times [2022-11-25 17:15:47,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:15:47,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959532209] [2022-11-25 17:15:47,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:15:47,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:15:47,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:47,685 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 17:15:47,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:15:47,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959532209] [2022-11-25 17:15:47,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959532209] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:15:47,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407771972] [2022-11-25 17:15:47,686 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 17:15:47,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:15:47,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b607b58b-2a7a-4448-9d9c-fca5bacec794/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:15:47,688 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b607b58b-2a7a-4448-9d9c-fca5bacec794/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:15:47,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b607b58b-2a7a-4448-9d9c-fca5bacec794/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-25 17:15:47,804 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-25 17:15:47,804 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 17:15:47,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 17:15:47,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:15:47,836 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 17:15:47,836 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:15:47,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [407771972] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:15:47,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:15:47,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [6] total 7 [2022-11-25 17:15:47,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543414558] [2022-11-25 17:15:47,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:15:47,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:15:47,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:15:47,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:15:47,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-25 17:15:47,850 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 328 [2022-11-25 17:15:47,851 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 34 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 160.33333333333334) internal successors, (481), 3 states have internal predecessors, (481), 0 states have call successors, (0), 0 states 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 17:15:47,851 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 17:15:47,852 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 328 [2022-11-25 17:15:47,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 17:15:48,597 INFO L130 PetriNetUnfolder]: 5786/8209 cut-off events. [2022-11-25 17:15:48,597 INFO L131 PetriNetUnfolder]: For 10638/11718 co-relation queries the response was YES. [2022-11-25 17:15:48,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23055 conditions, 8209 events. 5786/8209 cut-off events. For 10638/11718 co-relation queries the response was YES. Maximal size of possible extension queue 448. Compared 46290 event pairs, 3931 based on Foata normal form. 1542/8452 useless extension candidates. Maximal degree in co-relation 23037. Up to 8154 conditions per place. [2022-11-25 17:15:48,624 INFO L137 encePairwiseOnDemand]: 326/328 looper letters, 0 selfloop transitions, 0 changer transitions 33/33 dead transitions. [2022-11-25 17:15:48,624 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 33 transitions, 198 flow [2022-11-25 17:15:48,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 17:15:48,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 17:15:48,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 491 transitions. [2022-11-25 17:15:48,632 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49898373983739835 [2022-11-25 17:15:48,632 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 491 transitions. [2022-11-25 17:15:48,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 491 transitions. [2022-11-25 17:15:48,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 17:15:48,633 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 491 transitions. [2022-11-25 17:15:48,634 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 0 states have call successors, (0), 0 states 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 17:15:48,636 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 328.0) internal successors, (1312), 4 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:15:48,636 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 328.0) internal successors, (1312), 4 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 17:15:48,636 INFO L175 Difference]: Start difference. First operand has 55 places, 34 transitions, 150 flow. Second operand 3 states and 491 transitions. [2022-11-25 17:15:48,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 33 transitions, 198 flow [2022-11-25 17:15:48,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 33 transitions, 179 flow, removed 5 selfloop flow, removed 5 redundant places. [2022-11-25 17:15:48,658 INFO L231 Difference]: Finished difference. Result has 48 places, 0 transitions, 0 flow [2022-11-25 17:15:48,658 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=328, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=48, PETRI_TRANSITIONS=0} [2022-11-25 17:15:48,658 INFO L288 CegarLoopForPetriNet]: 36 programPoint places, 12 predicate places. [2022-11-25 17:15:48,659 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 0 transitions, 0 flow [2022-11-25 17:15:48,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 160.33333333333334) internal successors, (481), 3 states have internal predecessors, (481), 0 states have call successors, (0), 0 states 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 17:15:48,661 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 17 remaining) [2022-11-25 17:15:48,661 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2022-11-25 17:15:48,661 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2022-11-25 17:15:48,662 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2022-11-25 17:15:48,662 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2022-11-25 17:15:48,662 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2022-11-25 17:15:48,662 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2022-11-25 17:15:48,662 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2022-11-25 17:15:48,662 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 17 remaining) [2022-11-25 17:15:48,662 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 17 remaining) [2022-11-25 17:15:48,662 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 17 remaining) [2022-11-25 17:15:48,662 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2022-11-25 17:15:48,663 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2022-11-25 17:15:48,663 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2022-11-25 17:15:48,663 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2022-11-25 17:15:48,663 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2022-11-25 17:15:48,663 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2022-11-25 17:15:48,667 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b607b58b-2a7a-4448-9d9c-fca5bacec794/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-25 17:15:48,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b607b58b-2a7a-4448-9d9c-fca5bacec794/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:15:48,864 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:15:48,869 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-25 17:15:48,870 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 17:15:48,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 05:15:48 BasicIcfg [2022-11-25 17:15:48,873 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 17:15:48,874 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 17:15:48,874 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 17:15:48,874 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 17:15:48,875 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:15:13" (3/4) ... [2022-11-25 17:15:48,877 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-25 17:15:48,884 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-25 17:15:48,884 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-25 17:15:48,884 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-11-25 17:15:48,892 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2022-11-25 17:15:48,892 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-25 17:15:48,892 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-25 17:15:48,893 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-25 17:15:48,936 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b607b58b-2a7a-4448-9d9c-fca5bacec794/bin/uautomizer-ZsLfNo2U6R/witness.graphml [2022-11-25 17:15:48,937 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 17:15:48,937 INFO L158 Benchmark]: Toolchain (without parser) took 36286.82ms. Allocated memory was 146.8MB in the beginning and 9.6GB in the end (delta: 9.4GB). Free memory was 109.6MB in the beginning and 8.3GB in the end (delta: -8.2GB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. [2022-11-25 17:15:48,938 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 119.5MB. Free memory is still 88.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 17:15:48,938 INFO L158 Benchmark]: CACSL2BoogieTranslator took 306.78ms. Allocated memory is still 146.8MB. Free memory was 109.6MB in the beginning and 110.5MB in the end (delta: -901.8kB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-25 17:15:48,939 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.39ms. Allocated memory is still 146.8MB. Free memory was 110.5MB in the beginning and 108.0MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 17:15:48,939 INFO L158 Benchmark]: Boogie Preprocessor took 27.92ms. Allocated memory is still 146.8MB. Free memory was 108.0MB in the beginning and 106.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 17:15:48,939 INFO L158 Benchmark]: RCFGBuilder took 632.53ms. Allocated memory is still 146.8MB. Free memory was 106.9MB in the beginning and 89.5MB in the end (delta: 17.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-25 17:15:48,940 INFO L158 Benchmark]: TraceAbstraction took 35205.68ms. Allocated memory was 146.8MB in the beginning and 9.6GB in the end (delta: 9.4GB). Free memory was 88.9MB in the beginning and 8.3GB in the end (delta: -8.2GB). Peak memory consumption was 1.3GB. Max. memory is 16.1GB. [2022-11-25 17:15:48,940 INFO L158 Benchmark]: Witness Printer took 63.12ms. Allocated memory is still 9.6GB. Free memory was 8.3GB in the beginning and 8.3GB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 17:15:48,942 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 119.5MB. Free memory is still 88.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 306.78ms. Allocated memory is still 146.8MB. Free memory was 109.6MB in the beginning and 110.5MB in the end (delta: -901.8kB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.39ms. Allocated memory is still 146.8MB. Free memory was 110.5MB in the beginning and 108.0MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.92ms. Allocated memory is still 146.8MB. Free memory was 108.0MB in the beginning and 106.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 632.53ms. Allocated memory is still 146.8MB. Free memory was 106.9MB in the beginning and 89.5MB in the end (delta: 17.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 35205.68ms. Allocated memory was 146.8MB in the beginning and 9.6GB in the end (delta: 9.4GB). Free memory was 88.9MB in the beginning and 8.3GB in the end (delta: -8.2GB). Peak memory consumption was 1.3GB. Max. memory is 16.1GB. * Witness Printer took 63.12ms. Allocated memory is still 9.6GB. Free memory was 8.3GB in the beginning and 8.3GB 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: 7.3s, 150 PlacesBefore, 36 PlacesAfterwards, 151 TransitionsBefore, 30 TransitionsAfterwards, 2688 CoEnabledTransitionPairs, 7 FixpointIterations, 73 TrivialSequentialCompositions, 52 ConcurrentSequentialCompositions, 15 TrivialYvCompositions, 6 ConcurrentYvCompositions, 7 ChoiceCompositions, 153 TotalNumberOfCompositions, 2996 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2772, independent: 2747, independent conditional: 0, independent unconditional: 2747, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1742, independent: 1725, independent conditional: 0, independent unconditional: 1725, dependent: 17, dependent conditional: 0, dependent unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1742, independent: 1725, independent conditional: 0, independent unconditional: 1725, dependent: 17, dependent conditional: 0, dependent unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 17, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 17, dependent conditional: 0, dependent unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 73, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 73, dependent conditional: 0, dependent unconditional: 73, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 2772, independent: 1022, independent conditional: 0, independent unconditional: 1022, dependent: 8, dependent conditional: 0, dependent unconditional: 8, unknown: 1742, unknown conditional: 0, unknown unconditional: 1742] , Statistics on independence cache: Total cache size (in pairs): 74, Positive cache size: 72, Positive conditional cache size: 0, Positive unconditional cache size: 72, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 48]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 48]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 64]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 64]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 100]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 100]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 212 locations, 17 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: 35.0s, OverallIterations: 14, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 22.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 7.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1026 SdHoareTripleChecker+Valid, 1.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 843 mSDsluCounter, 87 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 50 mSDsCounter, 41 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1453 IncrementalHoareTripleChecker+Invalid, 1494 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 41 mSolverCounterUnsat, 37 mSDtfsCounter, 1453 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 117 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=191occurred in iteration=11, InterpolantAutomatonStates: 57, 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: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 161 NumberOfCodeBlocks, 153 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 152 ConstructedInterpolants, 0 QuantifiedInterpolants, 364 SizeOfPredicates, 5 NumberOfNonLiveVariables, 1400 ConjunctsInSsa, 44 ConjunctsInUnsatCore, 27 InterpolantComputations, 11 PerfectInterpolantSequences, 30/64 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 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-25 17:15:48,968 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b607b58b-2a7a-4448-9d9c-fca5bacec794/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