./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec3_product32.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec3_product32.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f844ee25e08c400ffe9294b51b3c9849047d932ed3d2e45badb4ba2d0884ce06 --- 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-5e519f3 [2022-11-03 03:29:30,745 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:29:30,748 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:29:30,799 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:29:30,800 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:29:30,804 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:29:30,806 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:29:30,810 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:29:30,812 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:29:30,820 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:29:30,821 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:29:30,823 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:29:30,823 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:29:30,826 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:29:30,827 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:29:30,829 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:29:30,831 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:29:30,832 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:29:30,833 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:29:30,842 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:29:30,844 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:29:30,846 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:29:30,847 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:29:30,848 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:29:30,852 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:29:30,852 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:29:30,853 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:29:30,853 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:29:30,854 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:29:30,855 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:29:30,855 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:29:30,856 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:29:30,857 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:29:30,858 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:29:30,859 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:29:30,859 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:29:30,860 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:29:30,861 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:29:30,861 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:29:30,862 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:29:30,863 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:29:30,864 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 03:29:30,893 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:29:30,894 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:29:30,895 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:29:30,895 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:29:30,896 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:29:30,897 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:29:30,897 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:29:30,897 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:29:30,897 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:29:30,898 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 03:29:30,899 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:29:30,899 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:29:30,899 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 03:29:30,900 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 03:29:30,900 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:29:30,900 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 03:29:30,900 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 03:29:30,901 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 03:29:30,902 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:29:30,902 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 03:29:30,902 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 03:29:30,902 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 03:29:30,903 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:29:30,904 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:29:30,905 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:29:30,905 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:29:30,905 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 03:29:30,905 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:29:30,906 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:29:30,906 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:29:30,906 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:29:30,907 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:29:30,907 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:29:30,907 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:29:30,907 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 03:29:30,908 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:29:30,908 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:29:30,908 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 03:29:30,908 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 03:29:30,909 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:29:30,909 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:29:30,910 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f844ee25e08c400ffe9294b51b3c9849047d932ed3d2e45badb4ba2d0884ce06 [2022-11-03 03:29:31,242 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:29:31,278 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:29:31,281 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:29:31,282 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:29:31,283 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:29:31,285 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/product-lines/email_spec3_product32.cil.c [2022-11-03 03:29:31,361 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/data/3845a3758/9f015adf7b024c96adcf666d48950c59/FLAGa2cf3d601 [2022-11-03 03:29:32,090 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:29:32,091 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/sv-benchmarks/c/product-lines/email_spec3_product32.cil.c [2022-11-03 03:29:32,120 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/data/3845a3758/9f015adf7b024c96adcf666d48950c59/FLAGa2cf3d601 [2022-11-03 03:29:32,278 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/data/3845a3758/9f015adf7b024c96adcf666d48950c59 [2022-11-03 03:29:32,281 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:29:32,282 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:29:32,287 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:29:32,288 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:29:32,292 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:29:32,293 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:29:32" (1/1) ... [2022-11-03 03:29:32,294 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79091362 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:29:32, skipping insertion in model container [2022-11-03 03:29:32,294 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:29:32" (1/1) ... [2022-11-03 03:29:32,303 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:29:32,392 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:29:32,612 WARN L230 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_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/sv-benchmarks/c/product-lines/email_spec3_product32.cil.c[1542,1555] [2022-11-03 03:29:33,060 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:29:33,071 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:29:33,087 WARN L230 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_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/sv-benchmarks/c/product-lines/email_spec3_product32.cil.c[1542,1555] [2022-11-03 03:29:33,219 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:29:33,249 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:29:33,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:29:33 WrapperNode [2022-11-03 03:29:33,250 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:29:33,251 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:29:33,251 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:29:33,251 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:29:33,258 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:29:33" (1/1) ... [2022-11-03 03:29:33,283 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:29:33" (1/1) ... [2022-11-03 03:29:33,338 INFO L138 Inliner]: procedures = 135, calls = 246, calls flagged for inlining = 61, calls inlined = 53, statements flattened = 1019 [2022-11-03 03:29:33,338 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:29:33,339 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:29:33,339 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:29:33,339 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:29:33,349 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:29:33" (1/1) ... [2022-11-03 03:29:33,349 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:29:33" (1/1) ... [2022-11-03 03:29:33,355 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:29:33" (1/1) ... [2022-11-03 03:29:33,355 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:29:33" (1/1) ... [2022-11-03 03:29:33,373 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:29:33" (1/1) ... [2022-11-03 03:29:33,383 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:29:33" (1/1) ... [2022-11-03 03:29:33,387 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:29:33" (1/1) ... [2022-11-03 03:29:33,391 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:29:33" (1/1) ... [2022-11-03 03:29:33,398 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:29:33,399 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:29:33,399 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:29:33,400 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:29:33,415 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:29:33" (1/1) ... [2022-11-03 03:29:33,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:29:33,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:29:33,447 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:29:33,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:29:33,546 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-03 03:29:33,547 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-03 03:29:33,547 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-11-03 03:29:33,547 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-11-03 03:29:33,547 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-03 03:29:33,548 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-03 03:29:33,548 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-11-03 03:29:33,548 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-11-03 03:29:33,548 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-03 03:29:33,548 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-03 03:29:33,549 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-03 03:29:33,549 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-03 03:29:33,549 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2022-11-03 03:29:33,549 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2022-11-03 03:29:33,549 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-03 03:29:33,550 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-03 03:29:33,550 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-03 03:29:33,550 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-03 03:29:33,550 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-03 03:29:33,550 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-03 03:29:33,550 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-03 03:29:33,551 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-03 03:29:33,551 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-03 03:29:33,551 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-03 03:29:33,551 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-03 03:29:33,552 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-03 03:29:33,552 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-03 03:29:33,552 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-03 03:29:33,553 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-03 03:29:33,553 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-03 03:29:33,554 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-03 03:29:33,579 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 03:29:33,579 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-03 03:29:33,579 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-03 03:29:33,580 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-11-03 03:29:33,580 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-11-03 03:29:33,580 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-11-03 03:29:33,580 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-11-03 03:29:33,580 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-03 03:29:33,580 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-03 03:29:33,581 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-11-03 03:29:33,581 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-11-03 03:29:33,581 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-03 03:29:33,582 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-03 03:29:33,582 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-03 03:29:33,583 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-03 03:29:33,583 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-11-03 03:29:33,584 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-11-03 03:29:33,584 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-03 03:29:33,585 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-03 03:29:33,585 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-03 03:29:33,585 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-03 03:29:33,585 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-03 03:29:33,586 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-03 03:29:33,586 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-03 03:29:33,586 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-03 03:29:33,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 03:29:33,586 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-03 03:29:33,587 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-03 03:29:33,587 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-11-03 03:29:33,587 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-11-03 03:29:33,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:29:33,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:29:33,865 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:29:33,868 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:29:34,975 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:29:35,656 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:29:35,656 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 03:29:35,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:29:35 BoogieIcfgContainer [2022-11-03 03:29:35,660 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:29:35,663 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:29:35,663 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:29:35,666 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:29:35,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:29:32" (1/3) ... [2022-11-03 03:29:35,667 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@261be161 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:29:35, skipping insertion in model container [2022-11-03 03:29:35,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:29:33" (2/3) ... [2022-11-03 03:29:35,668 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@261be161 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:29:35, skipping insertion in model container [2022-11-03 03:29:35,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:29:35" (3/3) ... [2022-11-03 03:29:35,669 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec3_product32.cil.c [2022-11-03 03:29:35,689 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:29:35,689 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 03:29:35,764 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:29:35,774 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=FINITE_AUTOMATA, 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;@1313a534, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:29:35,774 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 03:29:35,779 INFO L276 IsEmpty]: Start isEmpty. Operand has 229 states, 128 states have (on average 1.3046875) internal successors, (167), 135 states have internal predecessors, (167), 70 states have call successors, (70), 29 states have call predecessors, (70), 29 states have return successors, (70), 68 states have call predecessors, (70), 70 states have call successors, (70) [2022-11-03 03:29:35,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-03 03:29:35,794 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:29:35,794 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:29:35,795 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:29:35,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:29:35,800 INFO L85 PathProgramCache]: Analyzing trace with hash -782097025, now seen corresponding path program 1 times [2022-11-03 03:29:35,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:29:35,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724702586] [2022-11-03 03:29:35,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:29:35,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:29:35,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:29:36,233 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-03 03:29:36,234 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:29:36,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724702586] [2022-11-03 03:29:36,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724702586] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:29:36,235 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:29:36,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 03:29:36,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387257898] [2022-11-03 03:29:36,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:29:36,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 03:29:36,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:29:36,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 03:29:36,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 03:29:36,271 INFO L87 Difference]: Start difference. First operand has 229 states, 128 states have (on average 1.3046875) internal successors, (167), 135 states have internal predecessors, (167), 70 states have call successors, (70), 29 states have call predecessors, (70), 29 states have return successors, (70), 68 states have call predecessors, (70), 70 states have call successors, (70) Second operand has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-03 03:29:36,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:29:36,433 INFO L93 Difference]: Finished difference Result 365 states and 485 transitions. [2022-11-03 03:29:36,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 03:29:36,436 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 90 [2022-11-03 03:29:36,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:29:36,447 INFO L225 Difference]: With dead ends: 365 [2022-11-03 03:29:36,447 INFO L226 Difference]: Without dead ends: 225 [2022-11-03 03:29:36,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 03:29:36,455 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:29:36,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 260 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:29:36,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2022-11-03 03:29:36,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2022-11-03 03:29:36,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 126 states have (on average 1.2777777777777777) internal successors, (161), 131 states have internal predecessors, (161), 70 states have call successors, (70), 29 states have call predecessors, (70), 28 states have return successors, (67), 66 states have call predecessors, (67), 67 states have call successors, (67) [2022-11-03 03:29:36,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 298 transitions. [2022-11-03 03:29:36,519 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 298 transitions. Word has length 90 [2022-11-03 03:29:36,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:29:36,521 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 298 transitions. [2022-11-03 03:29:36,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-03 03:29:36,521 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 298 transitions. [2022-11-03 03:29:36,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-03 03:29:36,526 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:29:36,528 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:29:36,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 03:29:36,529 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:29:36,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:29:36,530 INFO L85 PathProgramCache]: Analyzing trace with hash -483556752, now seen corresponding path program 1 times [2022-11-03 03:29:36,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:29:36,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261485265] [2022-11-03 03:29:36,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:29:36,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:29:36,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:29:36,929 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-03 03:29:36,929 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:29:36,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261485265] [2022-11-03 03:29:36,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261485265] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:29:36,930 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:29:36,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:29:36,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768469661] [2022-11-03 03:29:36,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:29:36,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:29:36,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:29:36,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:29:36,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:29:36,933 INFO L87 Difference]: Start difference. First operand 225 states and 298 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-03 03:29:37,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:29:37,133 INFO L93 Difference]: Finished difference Result 360 states and 466 transitions. [2022-11-03 03:29:37,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:29:37,134 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 102 [2022-11-03 03:29:37,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:29:37,137 INFO L225 Difference]: With dead ends: 360 [2022-11-03 03:29:37,137 INFO L226 Difference]: Without dead ends: 227 [2022-11-03 03:29:37,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:29:37,146 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 0 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:29:37,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 513 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 03:29:37,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2022-11-03 03:29:37,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2022-11-03 03:29:37,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 128 states have (on average 1.2734375) internal successors, (163), 133 states have internal predecessors, (163), 70 states have call successors, (70), 29 states have call predecessors, (70), 28 states have return successors, (67), 66 states have call predecessors, (67), 67 states have call successors, (67) [2022-11-03 03:29:37,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 300 transitions. [2022-11-03 03:29:37,181 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 300 transitions. Word has length 102 [2022-11-03 03:29:37,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:29:37,182 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 300 transitions. [2022-11-03 03:29:37,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-03 03:29:37,183 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 300 transitions. [2022-11-03 03:29:37,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-11-03 03:29:37,193 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:29:37,193 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:29:37,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 03:29:37,194 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:29:37,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:29:37,200 INFO L85 PathProgramCache]: Analyzing trace with hash 758514904, now seen corresponding path program 1 times [2022-11-03 03:29:37,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:29:37,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752737034] [2022-11-03 03:29:37,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:29:37,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:29:37,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:29:37,431 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-03 03:29:37,431 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:29:37,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752737034] [2022-11-03 03:29:37,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752737034] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:29:37,432 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:29:37,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:29:37,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696900168] [2022-11-03 03:29:37,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:29:37,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:29:37,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:29:37,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:29:37,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:29:37,434 INFO L87 Difference]: Start difference. First operand 227 states and 300 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-03 03:29:37,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:29:37,564 INFO L93 Difference]: Finished difference Result 489 states and 667 transitions. [2022-11-03 03:29:37,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:29:37,565 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 107 [2022-11-03 03:29:37,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:29:37,567 INFO L225 Difference]: With dead ends: 489 [2022-11-03 03:29:37,568 INFO L226 Difference]: Without dead ends: 280 [2022-11-03 03:29:37,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:29:37,570 INFO L413 NwaCegarLoop]: 277 mSDtfsCounter, 59 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:29:37,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 527 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:29:37,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2022-11-03 03:29:37,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 275. [2022-11-03 03:29:37,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 162 states have (on average 1.345679012345679) internal successors, (218), 167 states have internal predecessors, (218), 84 states have call successors, (84), 29 states have call predecessors, (84), 28 states have return successors, (81), 80 states have call predecessors, (81), 81 states have call successors, (81) [2022-11-03 03:29:37,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 383 transitions. [2022-11-03 03:29:37,594 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 383 transitions. Word has length 107 [2022-11-03 03:29:37,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:29:37,595 INFO L495 AbstractCegarLoop]: Abstraction has 275 states and 383 transitions. [2022-11-03 03:29:37,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-03 03:29:37,596 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 383 transitions. [2022-11-03 03:29:37,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-11-03 03:29:37,599 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:29:37,599 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:29:37,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 03:29:37,600 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:29:37,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:29:37,600 INFO L85 PathProgramCache]: Analyzing trace with hash -374903722, now seen corresponding path program 1 times [2022-11-03 03:29:37,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:29:37,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690229083] [2022-11-03 03:29:37,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:29:37,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:29:37,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:29:37,856 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-03 03:29:37,856 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:29:37,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690229083] [2022-11-03 03:29:37,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690229083] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 03:29:37,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534824009] [2022-11-03 03:29:37,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:29:37,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:29:37,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:29:37,863 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:29:37,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 03:29:38,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:29:38,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 1285 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 03:29:38,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:29:38,317 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-03 03:29:38,317 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:29:38,422 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-03 03:29:38,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534824009] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:29:38,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1654742829] [2022-11-03 03:29:38,452 INFO L159 IcfgInterpreter]: Started Sifa with 87 locations of interest [2022-11-03 03:29:38,452 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 03:29:38,458 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 03:29:38,465 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 03:29:38,469 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 03:30:25,401 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 443 for LOIs [2022-11-03 03:30:25,713 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 482 for LOIs [2022-11-03 03:30:36,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 03:30:36,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:30:36,693 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: Maybe an infinite loop at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:130) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:345) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:188) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:295) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:281) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:285) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.projectExistentially(SymbolicTools.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateTransformer.strongestPostconditionCall(PredicateTransformer.java:157) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.postCall(SymbolicTools.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:218) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:207) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-03 03:30:36,701 INFO L158 Benchmark]: Toolchain (without parser) took 64413.93ms. Allocated memory was 111.1MB in the beginning and 587.2MB in the end (delta: 476.1MB). Free memory was 74.5MB in the beginning and 338.3MB in the end (delta: -263.8MB). Peak memory consumption was 360.1MB. Max. memory is 16.1GB. [2022-11-03 03:30:36,701 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 111.1MB. Free memory is still 62.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 03:30:36,702 INFO L158 Benchmark]: CACSL2BoogieTranslator took 963.01ms. Allocated memory is still 111.1MB. Free memory was 74.3MB in the beginning and 56.6MB in the end (delta: 17.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-03 03:30:36,703 INFO L158 Benchmark]: Boogie Procedure Inliner took 87.49ms. Allocated memory is still 111.1MB. Free memory was 56.1MB in the beginning and 50.3MB in the end (delta: 5.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-03 03:30:36,703 INFO L158 Benchmark]: Boogie Preprocessor took 59.77ms. Allocated memory is still 111.1MB. Free memory was 50.3MB in the beginning and 45.2MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-03 03:30:36,708 INFO L158 Benchmark]: RCFGBuilder took 2261.02ms. Allocated memory was 111.1MB in the beginning and 182.5MB in the end (delta: 71.3MB). Free memory was 45.2MB in the beginning and 99.6MB in the end (delta: -54.5MB). Peak memory consumption was 31.3MB. Max. memory is 16.1GB. [2022-11-03 03:30:36,710 INFO L158 Benchmark]: TraceAbstraction took 61032.79ms. Allocated memory was 182.5MB in the beginning and 587.2MB in the end (delta: 404.8MB). Free memory was 98.6MB in the beginning and 338.3MB in the end (delta: -239.7MB). Peak memory consumption was 311.9MB. Max. memory is 16.1GB. [2022-11-03 03:30:36,714 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 111.1MB. Free memory is still 62.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 963.01ms. Allocated memory is still 111.1MB. Free memory was 74.3MB in the beginning and 56.6MB in the end (delta: 17.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 87.49ms. Allocated memory is still 111.1MB. Free memory was 56.1MB in the beginning and 50.3MB in the end (delta: 5.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 59.77ms. Allocated memory is still 111.1MB. Free memory was 50.3MB in the beginning and 45.2MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 2261.02ms. Allocated memory was 111.1MB in the beginning and 182.5MB in the end (delta: 71.3MB). Free memory was 45.2MB in the beginning and 99.6MB in the end (delta: -54.5MB). Peak memory consumption was 31.3MB. Max. memory is 16.1GB. * TraceAbstraction took 61032.79ms. Allocated memory was 182.5MB in the beginning and 587.2MB in the end (delta: 404.8MB). Free memory was 98.6MB in the beginning and 338.3MB in the end (delta: -239.7MB). Peak memory consumption was 311.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: Maybe an infinite loop de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: Maybe an infinite loop: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:130) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-11-03 03:30:36,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec3_product32.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f844ee25e08c400ffe9294b51b3c9849047d932ed3d2e45badb4ba2d0884ce06 --- 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-5e519f3 [2022-11-03 03:30:39,056 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:30:39,058 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:30:39,096 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:30:39,097 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:30:39,098 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:30:39,099 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:30:39,101 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:30:39,103 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:30:39,104 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:30:39,105 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:30:39,107 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:30:39,107 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:30:39,108 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:30:39,109 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:30:39,111 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:30:39,112 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:30:39,113 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:30:39,115 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:30:39,117 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:30:39,119 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:30:39,120 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:30:39,121 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:30:39,122 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:30:39,126 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:30:39,127 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:30:39,127 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:30:39,128 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:30:39,129 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:30:39,130 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:30:39,130 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:30:39,131 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:30:39,132 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:30:39,133 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:30:39,134 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:30:39,135 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:30:39,135 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:30:39,136 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:30:39,136 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:30:39,137 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:30:39,138 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:30:39,141 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-11-03 03:30:39,184 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:30:39,185 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:30:39,189 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:30:39,189 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:30:39,190 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:30:39,190 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:30:39,190 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:30:39,190 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:30:39,191 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:30:39,191 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:30:39,192 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:30:39,192 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:30:39,193 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:30:39,194 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 03:30:39,194 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 03:30:39,194 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:30:39,194 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:30:39,194 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:30:39,195 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:30:39,195 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-03 03:30:39,195 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-03 03:30:39,195 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-03 03:30:39,195 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 03:30:39,196 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:30:39,196 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:30:39,196 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:30:39,196 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:30:39,196 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-03 03:30:39,197 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:30:39,197 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:30:39,197 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:30:39,197 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:30:39,198 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:30:39,198 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-03 03:30:39,198 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-03 03:30:39,198 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:30:39,199 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:30:39,199 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-03 03:30:39,199 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f844ee25e08c400ffe9294b51b3c9849047d932ed3d2e45badb4ba2d0884ce06 [2022-11-03 03:30:39,616 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:30:39,654 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:30:39,657 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:30:39,658 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:30:39,659 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:30:39,661 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/product-lines/email_spec3_product32.cil.c [2022-11-03 03:30:39,731 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/data/3e30435f1/ca5e281a3c224e42818f1ba3739eaa1e/FLAGa73645b35 [2022-11-03 03:30:40,544 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:30:40,545 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/sv-benchmarks/c/product-lines/email_spec3_product32.cil.c [2022-11-03 03:30:40,564 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/data/3e30435f1/ca5e281a3c224e42818f1ba3739eaa1e/FLAGa73645b35 [2022-11-03 03:30:40,694 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/data/3e30435f1/ca5e281a3c224e42818f1ba3739eaa1e [2022-11-03 03:30:40,696 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:30:40,698 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:30:40,699 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:30:40,700 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:30:40,706 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:30:40,707 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:30:40" (1/1) ... [2022-11-03 03:30:40,708 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47b6e840 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:30:40, skipping insertion in model container [2022-11-03 03:30:40,709 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:30:40" (1/1) ... [2022-11-03 03:30:40,718 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:30:40,804 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:30:41,023 WARN L230 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_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/sv-benchmarks/c/product-lines/email_spec3_product32.cil.c[1542,1555] [2022-11-03 03:30:41,534 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:30:41,546 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-03 03:30:41,562 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:30:41,565 WARN L230 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_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/sv-benchmarks/c/product-lines/email_spec3_product32.cil.c[1542,1555] [2022-11-03 03:30:41,729 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:30:41,748 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:30:41,760 WARN L230 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_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/sv-benchmarks/c/product-lines/email_spec3_product32.cil.c[1542,1555] [2022-11-03 03:30:41,848 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:30:41,896 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:30:41,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:30:41 WrapperNode [2022-11-03 03:30:41,897 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:30:41,898 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:30:41,899 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:30:41,899 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:30:41,906 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:30:41" (1/1) ... [2022-11-03 03:30:41,955 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:30:41" (1/1) ... [2022-11-03 03:30:42,027 INFO L138 Inliner]: procedures = 137, calls = 246, calls flagged for inlining = 61, calls inlined = 53, statements flattened = 960 [2022-11-03 03:30:42,028 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:30:42,029 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:30:42,029 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:30:42,029 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:30:42,039 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:30:41" (1/1) ... [2022-11-03 03:30:42,039 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:30:41" (1/1) ... [2022-11-03 03:30:42,046 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:30:41" (1/1) ... [2022-11-03 03:30:42,047 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:30:41" (1/1) ... [2022-11-03 03:30:42,066 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:30:41" (1/1) ... [2022-11-03 03:30:42,077 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:30:41" (1/1) ... [2022-11-03 03:30:42,083 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:30:41" (1/1) ... [2022-11-03 03:30:42,087 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:30:41" (1/1) ... [2022-11-03 03:30:42,095 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:30:42,096 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:30:42,096 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:30:42,096 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:30:42,097 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:30:41" (1/1) ... [2022-11-03 03:30:42,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:30:42,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:30:42,148 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:30:42,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:30:42,200 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-03 03:30:42,201 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-03 03:30:42,201 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-11-03 03:30:42,201 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-11-03 03:30:42,201 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-03 03:30:42,201 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-03 03:30:42,202 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-11-03 03:30:42,202 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-11-03 03:30:42,202 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-03 03:30:42,202 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-03 03:30:42,202 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-03 03:30:42,203 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-03 03:30:42,203 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2022-11-03 03:30:42,203 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2022-11-03 03:30:42,203 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-03 03:30:42,204 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-03 03:30:42,204 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-03 03:30:42,204 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-03 03:30:42,204 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-03 03:30:42,205 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-03 03:30:42,205 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-03 03:30:42,205 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-03 03:30:42,205 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-03 03:30:42,205 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-03 03:30:42,206 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-03 03:30:42,206 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-03 03:30:42,207 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-03 03:30:42,207 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-03 03:30:42,207 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-03 03:30:42,207 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-03 03:30:42,207 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-03 03:30:42,208 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 03:30:42,208 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-03 03:30:42,208 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-03 03:30:42,208 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-11-03 03:30:42,209 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-11-03 03:30:42,209 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-11-03 03:30:42,209 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-11-03 03:30:42,209 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-03 03:30:42,209 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-03 03:30:42,210 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-11-03 03:30:42,210 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-11-03 03:30:42,211 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-03 03:30:42,211 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-03 03:30:42,211 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-03 03:30:42,213 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-03 03:30:42,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-03 03:30:42,214 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-11-03 03:30:42,215 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-11-03 03:30:42,215 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-03 03:30:42,215 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-03 03:30:42,216 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-03 03:30:42,216 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-03 03:30:42,216 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-03 03:30:42,216 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-03 03:30:42,217 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-03 03:30:42,217 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-03 03:30:42,217 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-03 03:30:42,217 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-03 03:30:42,217 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-11-03 03:30:42,218 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-11-03 03:30:42,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:30:42,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:30:42,505 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:30:42,507 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:30:43,646 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:30:43,665 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:30:43,665 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 03:30:43,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:30:43 BoogieIcfgContainer [2022-11-03 03:30:43,669 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:30:43,674 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:30:43,674 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:30:43,677 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:30:43,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:30:40" (1/3) ... [2022-11-03 03:30:43,678 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1be3caca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:30:43, skipping insertion in model container [2022-11-03 03:30:43,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:30:41" (2/3) ... [2022-11-03 03:30:43,679 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1be3caca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:30:43, skipping insertion in model container [2022-11-03 03:30:43,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:30:43" (3/3) ... [2022-11-03 03:30:43,681 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec3_product32.cil.c [2022-11-03 03:30:43,701 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:30:43,701 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 03:30:43,798 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:30:43,807 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=FINITE_AUTOMATA, 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;@718d208, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:30:43,807 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 03:30:43,816 INFO L276 IsEmpty]: Start isEmpty. Operand has 436 states, 335 states have (on average 1.5462686567164179) internal successors, (518), 342 states have internal predecessors, (518), 70 states have call successors, (70), 29 states have call predecessors, (70), 29 states have return successors, (70), 68 states have call predecessors, (70), 70 states have call successors, (70) [2022-11-03 03:30:43,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-11-03 03:30:43,853 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:30:43,854 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:30:43,856 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:30:43,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:30:43,881 INFO L85 PathProgramCache]: Analyzing trace with hash 2090905474, now seen corresponding path program 1 times [2022-11-03 03:30:43,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:30:43,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [546966408] [2022-11-03 03:30:43,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:30:43,899 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:30:43,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:30:43,907 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:30:43,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-03 03:30:44,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:30:44,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 704 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-03 03:30:44,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:30:44,463 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-11-03 03:30:44,463 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:30:44,464 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:30:44,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [546966408] [2022-11-03 03:30:44,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [546966408] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:30:44,465 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:30:44,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 03:30:44,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031937206] [2022-11-03 03:30:44,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:30:44,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 03:30:44,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:30:44,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 03:30:44,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 03:30:44,528 INFO L87 Difference]: Start difference. First operand has 436 states, 335 states have (on average 1.5462686567164179) internal successors, (518), 342 states have internal predecessors, (518), 70 states have call successors, (70), 29 states have call predecessors, (70), 29 states have return successors, (70), 68 states have call predecessors, (70), 70 states have call successors, (70) Second operand has 2 states, 2 states have (on average 40.5) internal successors, (81), 2 states have internal predecessors, (81), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-03 03:30:44,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:30:44,650 INFO L93 Difference]: Finished difference Result 678 states and 1006 transitions. [2022-11-03 03:30:44,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 03:30:44,652 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 40.5) internal successors, (81), 2 states have internal predecessors, (81), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 158 [2022-11-03 03:30:44,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:30:44,682 INFO L225 Difference]: With dead ends: 678 [2022-11-03 03:30:44,682 INFO L226 Difference]: Without dead ends: 428 [2022-11-03 03:30:44,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 03:30:44,698 INFO L413 NwaCegarLoop]: 652 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 652 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:30:44,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 652 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:30:44,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2022-11-03 03:30:44,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 428. [2022-11-03 03:30:44,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 329 states have (on average 1.541033434650456) internal successors, (507), 334 states have internal predecessors, (507), 70 states have call successors, (70), 29 states have call predecessors, (70), 28 states have return successors, (67), 66 states have call predecessors, (67), 67 states have call successors, (67) [2022-11-03 03:30:44,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 644 transitions. [2022-11-03 03:30:44,798 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 644 transitions. Word has length 158 [2022-11-03 03:30:44,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:30:44,800 INFO L495 AbstractCegarLoop]: Abstraction has 428 states and 644 transitions. [2022-11-03 03:30:44,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 40.5) internal successors, (81), 2 states have internal predecessors, (81), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-03 03:30:44,801 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 644 transitions. [2022-11-03 03:30:44,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-11-03 03:30:44,808 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:30:44,808 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:30:44,836 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-03 03:30:45,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:30:45,026 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:30:45,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:30:45,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1214452620, now seen corresponding path program 1 times [2022-11-03 03:30:45,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:30:45,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [938937840] [2022-11-03 03:30:45,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:30:45,029 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:30:45,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:30:45,030 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:30:45,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-03 03:30:45,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:30:45,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 705 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-03 03:30:45,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:30:45,588 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-03 03:30:45,588 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:30:45,589 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:30:45,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [938937840] [2022-11-03 03:30:45,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [938937840] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:30:45,589 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:30:45,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:30:45,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669592041] [2022-11-03 03:30:45,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:30:45,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:30:45,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:30:45,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:30:45,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:30:45,593 INFO L87 Difference]: Start difference. First operand 428 states and 644 transitions. Second operand has 5 states, 4 states have (on average 22.75) internal successors, (91), 5 states have internal predecessors, (91), 3 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) [2022-11-03 03:30:45,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:30:45,699 INFO L93 Difference]: Finished difference Result 847 states and 1278 transitions. [2022-11-03 03:30:45,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:30:45,700 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 22.75) internal successors, (91), 5 states have internal predecessors, (91), 3 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) Word has length 159 [2022-11-03 03:30:45,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:30:45,704 INFO L225 Difference]: With dead ends: 847 [2022-11-03 03:30:45,704 INFO L226 Difference]: Without dead ends: 430 [2022-11-03 03:30:45,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:30:45,707 INFO L413 NwaCegarLoop]: 635 mSDtfsCounter, 152 mSDsluCounter, 1730 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 2365 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:30:45,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 2365 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:30:45,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2022-11-03 03:30:45,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 430. [2022-11-03 03:30:45,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 330 states have (on average 1.5393939393939393) internal successors, (508), 336 states have internal predecessors, (508), 70 states have call successors, (70), 29 states have call predecessors, (70), 29 states have return successors, (69), 66 states have call predecessors, (69), 67 states have call successors, (69) [2022-11-03 03:30:45,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 647 transitions. [2022-11-03 03:30:45,746 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 647 transitions. Word has length 159 [2022-11-03 03:30:45,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:30:45,746 INFO L495 AbstractCegarLoop]: Abstraction has 430 states and 647 transitions. [2022-11-03 03:30:45,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 22.75) internal successors, (91), 5 states have internal predecessors, (91), 3 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) [2022-11-03 03:30:45,747 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 647 transitions. [2022-11-03 03:30:45,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-11-03 03:30:45,750 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:30:45,750 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:30:45,771 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-03 03:30:45,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:30:45,968 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:30:45,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:30:45,968 INFO L85 PathProgramCache]: Analyzing trace with hash -696902697, now seen corresponding path program 1 times [2022-11-03 03:30:45,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:30:45,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1481146190] [2022-11-03 03:30:45,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:30:45,970 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:30:45,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:30:45,971 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:30:45,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-03 03:30:46,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:30:46,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 706 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 03:30:46,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:30:46,464 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-03 03:30:46,464 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:30:46,464 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:30:46,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1481146190] [2022-11-03 03:30:46,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1481146190] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:30:46,465 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:30:46,465 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:30:46,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745021561] [2022-11-03 03:30:46,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:30:46,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:30:46,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:30:46,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:30:46,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:30:46,467 INFO L87 Difference]: Start difference. First operand 430 states and 647 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 3 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-11-03 03:30:46,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:30:46,605 INFO L93 Difference]: Finished difference Result 849 states and 1282 transitions. [2022-11-03 03:30:46,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:30:46,606 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 3 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 160 [2022-11-03 03:30:46,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:30:46,610 INFO L225 Difference]: With dead ends: 849 [2022-11-03 03:30:46,610 INFO L226 Difference]: Without dead ends: 432 [2022-11-03 03:30:46,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:30:46,615 INFO L413 NwaCegarLoop]: 633 mSDtfsCounter, 151 mSDsluCounter, 1721 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 2354 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:30:46,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 2354 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:30:46,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2022-11-03 03:30:46,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 432. [2022-11-03 03:30:46,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 331 states have (on average 1.5377643504531722) internal successors, (509), 338 states have internal predecessors, (509), 70 states have call successors, (70), 29 states have call predecessors, (70), 30 states have return successors, (73), 66 states have call predecessors, (73), 67 states have call successors, (73) [2022-11-03 03:30:46,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 652 transitions. [2022-11-03 03:30:46,662 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 652 transitions. Word has length 160 [2022-11-03 03:30:46,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:30:46,664 INFO L495 AbstractCegarLoop]: Abstraction has 432 states and 652 transitions. [2022-11-03 03:30:46,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 3 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-11-03 03:30:46,667 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 652 transitions. [2022-11-03 03:30:46,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-11-03 03:30:46,673 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:30:46,673 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:30:46,691 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-03 03:30:46,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:30:46,891 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:30:46,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:30:46,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1304053005, now seen corresponding path program 1 times [2022-11-03 03:30:46,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:30:46,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1076125726] [2022-11-03 03:30:46,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:30:46,893 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:30:46,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:30:46,894 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:30:46,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-03 03:30:47,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:30:47,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 665 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-03 03:30:47,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:30:47,344 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-03 03:30:47,344 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:30:47,345 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:30:47,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1076125726] [2022-11-03 03:30:47,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1076125726] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:30:47,353 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:30:47,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:30:47,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997513102] [2022-11-03 03:30:47,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:30:47,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:30:47,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:30:47,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:30:47,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:30:47,358 INFO L87 Difference]: Start difference. First operand 432 states and 652 transitions. Second operand has 5 states, 4 states have (on average 21.25) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-03 03:30:47,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:30:47,455 INFO L93 Difference]: Finished difference Result 841 states and 1272 transitions. [2022-11-03 03:30:47,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:30:47,456 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 21.25) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) Word has length 142 [2022-11-03 03:30:47,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:30:47,460 INFO L225 Difference]: With dead ends: 841 [2022-11-03 03:30:47,460 INFO L226 Difference]: Without dead ends: 432 [2022-11-03 03:30:47,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:30:47,468 INFO L413 NwaCegarLoop]: 635 mSDtfsCounter, 150 mSDsluCounter, 1733 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 2368 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:30:47,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 2368 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:30:47,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2022-11-03 03:30:47,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 432. [2022-11-03 03:30:47,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 331 states have (on average 1.5377643504531722) internal successors, (509), 338 states have internal predecessors, (509), 70 states have call successors, (70), 29 states have call predecessors, (70), 30 states have return successors, (72), 66 states have call predecessors, (72), 67 states have call successors, (72) [2022-11-03 03:30:47,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 651 transitions. [2022-11-03 03:30:47,507 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 651 transitions. Word has length 142 [2022-11-03 03:30:47,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:30:47,508 INFO L495 AbstractCegarLoop]: Abstraction has 432 states and 651 transitions. [2022-11-03 03:30:47,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 21.25) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-03 03:30:47,509 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 651 transitions. [2022-11-03 03:30:47,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-11-03 03:30:47,513 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:30:47,513 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:30:47,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-03 03:30:47,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:30:47,731 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:30:47,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:30:47,731 INFO L85 PathProgramCache]: Analyzing trace with hash 579237247, now seen corresponding path program 1 times [2022-11-03 03:30:47,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:30:47,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1903827088] [2022-11-03 03:30:47,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:30:47,733 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:30:47,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:30:47,734 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:30:47,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-03 03:30:48,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:30:48,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 708 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-03 03:30:48,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:30:48,163 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-03 03:30:48,163 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:30:48,163 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:30:48,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1903827088] [2022-11-03 03:30:48,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1903827088] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:30:48,164 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:30:48,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:30:48,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256026419] [2022-11-03 03:30:48,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:30:48,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:30:48,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:30:48,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:30:48,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:30:48,166 INFO L87 Difference]: Start difference. First operand 432 states and 651 transitions. Second operand has 5 states, 4 states have (on average 23.25) internal successors, (93), 5 states have internal predecessors, (93), 3 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) [2022-11-03 03:30:48,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:30:48,269 INFO L93 Difference]: Finished difference Result 843 states and 1275 transitions. [2022-11-03 03:30:48,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:30:48,270 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 23.25) internal successors, (93), 5 states have internal predecessors, (93), 3 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) Word has length 162 [2022-11-03 03:30:48,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:30:48,277 INFO L225 Difference]: With dead ends: 843 [2022-11-03 03:30:48,277 INFO L226 Difference]: Without dead ends: 434 [2022-11-03 03:30:48,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:30:48,280 INFO L413 NwaCegarLoop]: 636 mSDtfsCounter, 148 mSDsluCounter, 1734 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 2370 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:30:48,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 2370 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:30:48,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2022-11-03 03:30:48,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2022-11-03 03:30:48,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 332 states have (on average 1.536144578313253) internal successors, (510), 340 states have internal predecessors, (510), 70 states have call successors, (70), 29 states have call predecessors, (70), 31 states have return successors, (74), 66 states have call predecessors, (74), 67 states have call successors, (74) [2022-11-03 03:30:48,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 654 transitions. [2022-11-03 03:30:48,322 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 654 transitions. Word has length 162 [2022-11-03 03:30:48,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:30:48,324 INFO L495 AbstractCegarLoop]: Abstraction has 434 states and 654 transitions. [2022-11-03 03:30:48,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 23.25) internal successors, (93), 5 states have internal predecessors, (93), 3 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) [2022-11-03 03:30:48,325 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 654 transitions. [2022-11-03 03:30:48,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-11-03 03:30:48,329 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:30:48,330 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:30:48,358 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-03 03:30:48,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:30:48,552 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:30:48,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:30:48,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1612991493, now seen corresponding path program 1 times [2022-11-03 03:30:48,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:30:48,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1660653351] [2022-11-03 03:30:48,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:30:48,554 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:30:48,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:30:48,556 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:30:48,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-03 03:30:48,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:30:48,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 709 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 03:30:48,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:30:49,006 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-03 03:30:49,015 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:30:49,015 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:30:49,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1660653351] [2022-11-03 03:30:49,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1660653351] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:30:49,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:30:49,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:30:49,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020970927] [2022-11-03 03:30:49,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:30:49,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:30:49,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:30:49,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:30:49,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:30:49,018 INFO L87 Difference]: Start difference. First operand 434 states and 654 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 3 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-11-03 03:30:49,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:30:49,150 INFO L93 Difference]: Finished difference Result 841 states and 1270 transitions. [2022-11-03 03:30:49,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:30:49,151 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 3 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 163 [2022-11-03 03:30:49,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:30:49,154 INFO L225 Difference]: With dead ends: 841 [2022-11-03 03:30:49,154 INFO L226 Difference]: Without dead ends: 434 [2022-11-03 03:30:49,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:30:49,156 INFO L413 NwaCegarLoop]: 633 mSDtfsCounter, 149 mSDsluCounter, 1724 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 2357 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:30:49,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 2357 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:30:49,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2022-11-03 03:30:49,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2022-11-03 03:30:49,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 332 states have (on average 1.536144578313253) internal successors, (510), 340 states have internal predecessors, (510), 70 states have call successors, (70), 29 states have call predecessors, (70), 31 states have return successors, (73), 66 states have call predecessors, (73), 67 states have call successors, (73) [2022-11-03 03:30:49,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 653 transitions. [2022-11-03 03:30:49,187 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 653 transitions. Word has length 163 [2022-11-03 03:30:49,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:30:49,188 INFO L495 AbstractCegarLoop]: Abstraction has 434 states and 653 transitions. [2022-11-03 03:30:49,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 3 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-11-03 03:30:49,189 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 653 transitions. [2022-11-03 03:30:49,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-11-03 03:30:49,192 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:30:49,192 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:30:49,214 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-03 03:30:49,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:30:49,410 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:30:49,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:30:49,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1162283296, now seen corresponding path program 2 times [2022-11-03 03:30:49,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:30:49,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2031057448] [2022-11-03 03:30:49,411 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-03 03:30:49,411 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:30:49,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:30:49,412 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:30:49,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-03 03:30:49,690 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-03 03:30:49,690 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 03:30:49,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 03:30:49,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:30:49,735 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-03 03:30:49,735 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:30:49,736 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:30:49,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2031057448] [2022-11-03 03:30:49,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2031057448] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:30:49,737 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:30:49,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:30:49,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550372319] [2022-11-03 03:30:49,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:30:49,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:30:49,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:30:49,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:30:49,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:30:49,739 INFO L87 Difference]: Start difference. First operand 434 states and 653 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-03 03:30:49,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:30:49,775 INFO L93 Difference]: Finished difference Result 673 states and 989 transitions. [2022-11-03 03:30:49,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:30:49,776 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 164 [2022-11-03 03:30:49,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:30:49,780 INFO L225 Difference]: With dead ends: 673 [2022-11-03 03:30:49,780 INFO L226 Difference]: Without dead ends: 437 [2022-11-03 03:30:49,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:30:49,782 INFO L413 NwaCegarLoop]: 642 mSDtfsCounter, 1 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1282 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:30:49,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1282 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:30:49,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2022-11-03 03:30:49,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 436. [2022-11-03 03:30:49,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 334 states have (on average 1.532934131736527) internal successors, (512), 342 states have internal predecessors, (512), 70 states have call successors, (70), 29 states have call predecessors, (70), 31 states have return successors, (73), 66 states have call predecessors, (73), 67 states have call successors, (73) [2022-11-03 03:30:49,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 655 transitions. [2022-11-03 03:30:49,815 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 655 transitions. Word has length 164 [2022-11-03 03:30:49,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:30:49,815 INFO L495 AbstractCegarLoop]: Abstraction has 436 states and 655 transitions. [2022-11-03 03:30:49,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-03 03:30:49,816 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 655 transitions. [2022-11-03 03:30:49,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-11-03 03:30:49,819 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:30:49,819 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:30:49,833 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-03 03:30:50,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:30:50,033 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:30:50,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:30:50,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1809672793, now seen corresponding path program 1 times [2022-11-03 03:30:50,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:30:50,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1617891531] [2022-11-03 03:30:50,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:30:50,035 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:30:50,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:30:50,036 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:30:50,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-03 03:30:50,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:30:50,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 725 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 03:30:50,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:30:50,451 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-11-03 03:30:50,452 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:30:50,452 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:30:50,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1617891531] [2022-11-03 03:30:50,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1617891531] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:30:50,452 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:30:50,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:30:50,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179510064] [2022-11-03 03:30:50,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:30:50,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:30:50,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:30:50,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:30:50,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:30:50,454 INFO L87 Difference]: Start difference. First operand 436 states and 655 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 3 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-11-03 03:30:50,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:30:50,587 INFO L93 Difference]: Finished difference Result 847 states and 1279 transitions. [2022-11-03 03:30:50,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:30:50,588 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 3 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 173 [2022-11-03 03:30:50,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:30:50,591 INFO L225 Difference]: With dead ends: 847 [2022-11-03 03:30:50,591 INFO L226 Difference]: Without dead ends: 438 [2022-11-03 03:30:50,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:30:50,594 INFO L413 NwaCegarLoop]: 634 mSDtfsCounter, 147 mSDsluCounter, 1725 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 2359 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:30:50,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 2359 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:30:50,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2022-11-03 03:30:50,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 438. [2022-11-03 03:30:50,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 335 states have (on average 1.5313432835820895) internal successors, (513), 344 states have internal predecessors, (513), 70 states have call successors, (70), 29 states have call predecessors, (70), 32 states have return successors, (77), 66 states have call predecessors, (77), 67 states have call successors, (77) [2022-11-03 03:30:50,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 660 transitions. [2022-11-03 03:30:50,625 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 660 transitions. Word has length 173 [2022-11-03 03:30:50,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:30:50,626 INFO L495 AbstractCegarLoop]: Abstraction has 438 states and 660 transitions. [2022-11-03 03:30:50,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 3 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-11-03 03:30:50,626 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 660 transitions. [2022-11-03 03:30:50,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-11-03 03:30:50,629 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:30:50,630 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:30:50,654 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-03 03:30:50,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:30:50,843 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:30:50,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:30:50,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1584244848, now seen corresponding path program 1 times [2022-11-03 03:30:50,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:30:50,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1404359217] [2022-11-03 03:30:50,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:30:50,845 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:30:50,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:30:50,847 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:30:50,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-03 03:30:51,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:30:51,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 684 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 03:30:51,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:30:51,281 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-11-03 03:30:51,281 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:30:51,282 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:30:51,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1404359217] [2022-11-03 03:30:51,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1404359217] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:30:51,282 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:30:51,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:30:51,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929255968] [2022-11-03 03:30:51,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:30:51,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:30:51,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:30:51,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:30:51,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:30:51,285 INFO L87 Difference]: Start difference. First operand 438 states and 660 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-03 03:30:51,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:30:51,345 INFO L93 Difference]: Finished difference Result 920 states and 1406 transitions. [2022-11-03 03:30:51,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:30:51,346 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 155 [2022-11-03 03:30:51,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:30:51,349 INFO L225 Difference]: With dead ends: 920 [2022-11-03 03:30:51,350 INFO L226 Difference]: Without dead ends: 513 [2022-11-03 03:30:51,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:30:51,353 INFO L413 NwaCegarLoop]: 667 mSDtfsCounter, 134 mSDsluCounter, 598 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 1265 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:30:51,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 1265 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:30:51,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2022-11-03 03:30:51,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 505. [2022-11-03 03:30:51,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505 states, 388 states have (on average 1.5515463917525774) internal successors, (602), 397 states have internal predecessors, (602), 84 states have call successors, (84), 29 states have call predecessors, (84), 32 states have return successors, (93), 80 states have call predecessors, (93), 81 states have call successors, (93) [2022-11-03 03:30:51,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 779 transitions. [2022-11-03 03:30:51,397 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 779 transitions. Word has length 155 [2022-11-03 03:30:51,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:30:51,398 INFO L495 AbstractCegarLoop]: Abstraction has 505 states and 779 transitions. [2022-11-03 03:30:51,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-03 03:30:51,398 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 779 transitions. [2022-11-03 03:30:51,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-11-03 03:30:51,402 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:30:51,402 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:30:51,425 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-03 03:30:51,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:30:51,615 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:30:51,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:30:51,616 INFO L85 PathProgramCache]: Analyzing trace with hash -778011437, now seen corresponding path program 1 times [2022-11-03 03:30:51,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:30:51,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1709138041] [2022-11-03 03:30:51,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:30:51,616 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:30:51,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:30:51,617 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:30:51,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-03 03:30:52,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:30:52,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 728 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 03:30:52,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:30:52,112 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-03 03:30:52,112 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:30:52,112 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:30:52,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1709138041] [2022-11-03 03:30:52,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1709138041] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:30:52,113 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:30:52,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:30:52,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881545026] [2022-11-03 03:30:52,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:30:52,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:30:52,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:30:52,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:30:52,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:30:52,115 INFO L87 Difference]: Start difference. First operand 505 states and 779 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 3 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-11-03 03:30:52,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:30:52,329 INFO L93 Difference]: Finished difference Result 1156 states and 1812 transitions. [2022-11-03 03:30:52,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 03:30:52,330 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 3 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 175 [2022-11-03 03:30:52,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:30:52,335 INFO L225 Difference]: With dead ends: 1156 [2022-11-03 03:30:52,335 INFO L226 Difference]: Without dead ends: 680 [2022-11-03 03:30:52,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:30:52,338 INFO L413 NwaCegarLoop]: 795 mSDtfsCounter, 752 mSDsluCounter, 693 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 752 SdHoareTripleChecker+Valid, 1488 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:30:52,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [752 Valid, 1488 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:30:52,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2022-11-03 03:30:52,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 513. [2022-11-03 03:30:52,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 513 states, 395 states have (on average 1.539240506329114) internal successors, (608), 403 states have internal predecessors, (608), 84 states have call successors, (84), 31 states have call predecessors, (84), 33 states have return successors, (89), 80 states have call predecessors, (89), 81 states have call successors, (89) [2022-11-03 03:30:52,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 781 transitions. [2022-11-03 03:30:52,410 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 781 transitions. Word has length 175 [2022-11-03 03:30:52,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:30:52,411 INFO L495 AbstractCegarLoop]: Abstraction has 513 states and 781 transitions. [2022-11-03 03:30:52,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 3 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-11-03 03:30:52,411 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 781 transitions. [2022-11-03 03:30:52,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-11-03 03:30:52,415 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:30:52,415 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:30:52,434 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2022-11-03 03:30:52,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:30:52,634 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:30:52,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:30:52,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1439311614, now seen corresponding path program 1 times [2022-11-03 03:30:52,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:30:52,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2095038843] [2022-11-03 03:30:52,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:30:52,635 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:30:52,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:30:52,636 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:30:52,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-03 03:30:52,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:30:53,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 725 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 03:30:53,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:30:53,033 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-03 03:30:53,033 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:30:53,033 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:30:53,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2095038843] [2022-11-03 03:30:53,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2095038843] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:30:53,034 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:30:53,034 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:30:53,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272028929] [2022-11-03 03:30:53,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:30:53,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:30:53,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:30:53,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:30:53,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:30:53,036 INFO L87 Difference]: Start difference. First operand 513 states and 781 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-03 03:30:53,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:30:53,124 INFO L93 Difference]: Finished difference Result 1142 states and 1786 transitions. [2022-11-03 03:30:53,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:30:53,125 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 176 [2022-11-03 03:30:53,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:30:53,128 INFO L225 Difference]: With dead ends: 1142 [2022-11-03 03:30:53,128 INFO L226 Difference]: Without dead ends: 670 [2022-11-03 03:30:53,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:30:53,131 INFO L413 NwaCegarLoop]: 665 mSDtfsCounter, 128 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 1299 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:30:53,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 1299 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:30:53,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2022-11-03 03:30:53,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 662. [2022-11-03 03:30:53,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 513 states have (on average 1.5750487329434697) internal successors, (808), 521 states have internal predecessors, (808), 115 states have call successors, (115), 31 states have call predecessors, (115), 33 states have return successors, (124), 111 states have call predecessors, (124), 112 states have call successors, (124) [2022-11-03 03:30:53,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 1047 transitions. [2022-11-03 03:30:53,226 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 1047 transitions. Word has length 176 [2022-11-03 03:30:53,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:30:53,227 INFO L495 AbstractCegarLoop]: Abstraction has 662 states and 1047 transitions. [2022-11-03 03:30:53,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-03 03:30:53,227 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 1047 transitions. [2022-11-03 03:30:53,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-11-03 03:30:53,231 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:30:53,231 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:30:53,249 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-03 03:30:53,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:30:53,448 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:30:53,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:30:53,449 INFO L85 PathProgramCache]: Analyzing trace with hash 688745287, now seen corresponding path program 1 times [2022-11-03 03:30:53,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:30:53,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1816406606] [2022-11-03 03:30:53,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:30:53,449 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:30:53,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:30:53,450 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:30:53,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-03 03:30:53,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:30:53,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 687 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 03:30:53,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:30:53,867 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-11-03 03:30:53,867 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:30:53,998 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-11-03 03:30:53,998 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:30:53,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1816406606] [2022-11-03 03:30:53,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1816406606] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:30:53,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1670242837] [2022-11-03 03:30:53,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:30:53,999 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 03:30:53,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 03:30:54,007 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 03:30:54,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2022-11-03 03:30:54,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:30:54,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 687 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-03 03:30:54,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:30:54,695 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-03 03:30:54,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:30:55,113 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-03 03:30:55,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1670242837] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:30:55,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [962770503] [2022-11-03 03:30:55,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:30:55,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:30:55,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:30:55,119 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:30:55,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-03 03:30:55,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:30:55,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 687 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-03 03:30:55,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:30:55,610 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-03 03:30:55,610 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:30:55,905 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-03 03:30:55,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [962770503] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:30:55,908 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 03:30:55,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 9, 9, 9, 9] total 20 [2022-11-03 03:30:55,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115927935] [2022-11-03 03:30:55,909 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 03:30:55,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-03 03:30:55,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:30:55,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-03 03:30:55,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2022-11-03 03:30:55,918 INFO L87 Difference]: Start difference. First operand 662 states and 1047 transitions. Second operand has 20 states, 20 states have (on average 10.9) internal successors, (218), 18 states have internal predecessors, (218), 4 states have call successors, (52), 6 states have call predecessors, (52), 9 states have return successors, (46), 6 states have call predecessors, (46), 4 states have call successors, (46) [2022-11-03 03:31:09,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:31:09,579 INFO L93 Difference]: Finished difference Result 3663 states and 6140 transitions. [2022-11-03 03:31:09,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-03 03:31:09,581 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 10.9) internal successors, (218), 18 states have internal predecessors, (218), 4 states have call successors, (52), 6 states have call predecessors, (52), 9 states have return successors, (46), 6 states have call predecessors, (46), 4 states have call successors, (46) Word has length 157 [2022-11-03 03:31:09,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:31:09,611 INFO L225 Difference]: With dead ends: 3663 [2022-11-03 03:31:09,615 INFO L226 Difference]: Without dead ends: 3427 [2022-11-03 03:31:09,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 964 GetRequests, 924 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=243, Invalid=1479, Unknown=0, NotChecked=0, Total=1722 [2022-11-03 03:31:09,620 INFO L413 NwaCegarLoop]: 909 mSDtfsCounter, 5159 mSDsluCounter, 5358 mSDsCounter, 0 mSdLazyCounter, 10289 mSolverCounterSat, 1554 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5257 SdHoareTripleChecker+Valid, 6267 SdHoareTripleChecker+Invalid, 11843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1554 IncrementalHoareTripleChecker+Valid, 10289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:31:09,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5257 Valid, 6267 Invalid, 11843 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1554 Valid, 10289 Invalid, 0 Unknown, 0 Unchecked, 12.3s Time] [2022-11-03 03:31:09,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3427 states. [2022-11-03 03:31:10,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3427 to 2619. [2022-11-03 03:31:10,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2619 states, 2071 states have (on average 1.6175760502172862) internal successors, (3350), 2085 states have internal predecessors, (3350), 480 states have call successors, (480), 60 states have call predecessors, (480), 67 states have return successors, (582), 477 states have call predecessors, (582), 476 states have call successors, (582) [2022-11-03 03:31:10,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2619 states to 2619 states and 4412 transitions. [2022-11-03 03:31:10,117 INFO L78 Accepts]: Start accepts. Automaton has 2619 states and 4412 transitions. Word has length 157 [2022-11-03 03:31:10,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:31:10,118 INFO L495 AbstractCegarLoop]: Abstraction has 2619 states and 4412 transitions. [2022-11-03 03:31:10,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 10.9) internal successors, (218), 18 states have internal predecessors, (218), 4 states have call successors, (52), 6 states have call predecessors, (52), 9 states have return successors, (46), 6 states have call predecessors, (46), 4 states have call successors, (46) [2022-11-03 03:31:10,118 INFO L276 IsEmpty]: Start isEmpty. Operand 2619 states and 4412 transitions. [2022-11-03 03:31:10,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-11-03 03:31:10,134 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:31:10,135 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:31:10,143 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2022-11-03 03:31:10,349 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-03 03:31:10,560 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-11-03 03:31:10,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:31:10,738 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:31:10,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:31:10,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1429987334, now seen corresponding path program 1 times [2022-11-03 03:31:10,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:31:10,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [297779950] [2022-11-03 03:31:10,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:31:10,740 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:31:10,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:31:10,741 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:31:10,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-03 03:31:11,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:31:11,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 728 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 03:31:11,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:31:11,092 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-03 03:31:11,092 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:31:11,092 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:31:11,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [297779950] [2022-11-03 03:31:11,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [297779950] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:31:11,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:31:11,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:31:11,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143552210] [2022-11-03 03:31:11,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:31:11,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:31:11,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:31:11,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:31:11,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:31:11,095 INFO L87 Difference]: Start difference. First operand 2619 states and 4412 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-03 03:31:11,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:31:11,698 INFO L93 Difference]: Finished difference Result 6259 states and 10643 transitions. [2022-11-03 03:31:11,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:31:11,699 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 180 [2022-11-03 03:31:11,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:31:11,721 INFO L225 Difference]: With dead ends: 6259 [2022-11-03 03:31:11,722 INFO L226 Difference]: Without dead ends: 3899 [2022-11-03 03:31:11,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:31:11,731 INFO L413 NwaCegarLoop]: 662 mSDtfsCounter, 126 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1296 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:31:11,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 1296 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:31:11,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3899 states. [2022-11-03 03:31:12,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3899 to 3883. [2022-11-03 03:31:12,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3883 states, 3097 states have (on average 1.6260897642880208) internal successors, (5036), 3111 states have internal predecessors, (5036), 718 states have call successors, (718), 60 states have call predecessors, (718), 67 states have return successors, (852), 715 states have call predecessors, (852), 714 states have call successors, (852) [2022-11-03 03:31:12,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3883 states to 3883 states and 6606 transitions. [2022-11-03 03:31:12,414 INFO L78 Accepts]: Start accepts. Automaton has 3883 states and 6606 transitions. Word has length 180 [2022-11-03 03:31:12,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:31:12,415 INFO L495 AbstractCegarLoop]: Abstraction has 3883 states and 6606 transitions. [2022-11-03 03:31:12,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-03 03:31:12,415 INFO L276 IsEmpty]: Start isEmpty. Operand 3883 states and 6606 transitions. [2022-11-03 03:31:12,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-11-03 03:31:12,441 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:31:12,441 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:31:12,465 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-03 03:31:12,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:31:12,660 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:31:12,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:31:12,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1050247178, now seen corresponding path program 1 times [2022-11-03 03:31:12,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:31:12,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1856100466] [2022-11-03 03:31:12,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:31:12,661 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:31:12,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:31:12,663 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:31:12,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-03 03:31:12,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:31:12,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 688 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 03:31:12,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:31:13,008 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-11-03 03:31:13,008 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:31:13,008 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:31:13,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1856100466] [2022-11-03 03:31:13,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1856100466] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:31:13,009 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:31:13,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:31:13,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148121769] [2022-11-03 03:31:13,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:31:13,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:31:13,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:31:13,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:31:13,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:31:13,011 INFO L87 Difference]: Start difference. First operand 3883 states and 6606 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-03 03:31:13,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:31:13,873 INFO L93 Difference]: Finished difference Result 9197 states and 15815 transitions. [2022-11-03 03:31:13,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:31:13,874 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 162 [2022-11-03 03:31:13,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:31:13,906 INFO L225 Difference]: With dead ends: 9197 [2022-11-03 03:31:13,907 INFO L226 Difference]: Without dead ends: 5839 [2022-11-03 03:31:13,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:31:13,920 INFO L413 NwaCegarLoop]: 654 mSDtfsCounter, 124 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 1284 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:31:13,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 1284 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:31:13,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5839 states. [2022-11-03 03:31:14,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5839 to 5823. [2022-11-03 03:31:15,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5823 states, 4713 states have (on average 1.632930193082962) internal successors, (7696), 4727 states have internal predecessors, (7696), 1042 states have call successors, (1042), 60 states have call predecessors, (1042), 67 states have return successors, (1260), 1039 states have call predecessors, (1260), 1038 states have call successors, (1260) [2022-11-03 03:31:15,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5823 states to 5823 states and 9998 transitions. [2022-11-03 03:31:15,045 INFO L78 Accepts]: Start accepts. Automaton has 5823 states and 9998 transitions. Word has length 162 [2022-11-03 03:31:15,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:31:15,045 INFO L495 AbstractCegarLoop]: Abstraction has 5823 states and 9998 transitions. [2022-11-03 03:31:15,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-03 03:31:15,046 INFO L276 IsEmpty]: Start isEmpty. Operand 5823 states and 9998 transitions. [2022-11-03 03:31:15,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-03 03:31:15,090 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:31:15,091 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:31:15,115 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2022-11-03 03:31:15,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:31:15,306 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:31:15,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:31:15,307 INFO L85 PathProgramCache]: Analyzing trace with hash -74151045, now seen corresponding path program 1 times [2022-11-03 03:31:15,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:31:15,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [642969907] [2022-11-03 03:31:15,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:31:15,308 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:31:15,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:31:15,310 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:31:15,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-03 03:31:15,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:31:15,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 732 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 03:31:15,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:31:15,698 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-03 03:31:15,698 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:31:15,698 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:31:15,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [642969907] [2022-11-03 03:31:15,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [642969907] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:31:15,699 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:31:15,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:31:15,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641889860] [2022-11-03 03:31:15,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:31:15,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:31:15,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:31:15,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:31:15,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:31:15,701 INFO L87 Difference]: Start difference. First operand 5823 states and 9998 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-03 03:31:16,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:31:16,856 INFO L93 Difference]: Finished difference Result 13839 states and 24003 transitions. [2022-11-03 03:31:16,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:31:16,859 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 182 [2022-11-03 03:31:16,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:31:16,909 INFO L225 Difference]: With dead ends: 13839 [2022-11-03 03:31:16,909 INFO L226 Difference]: Without dead ends: 8973 [2022-11-03 03:31:16,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:31:16,927 INFO L413 NwaCegarLoop]: 654 mSDtfsCounter, 122 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 1284 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:31:16,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 1284 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:31:16,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8973 states. [2022-11-03 03:31:18,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8973 to 8957. [2022-11-03 03:31:18,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8957 states, 7357 states have (on average 1.6378958814734266) internal successors, (12050), 7371 states have internal predecessors, (12050), 1532 states have call successors, (1532), 60 states have call predecessors, (1532), 67 states have return successors, (1890), 1529 states have call predecessors, (1890), 1528 states have call successors, (1890) [2022-11-03 03:31:18,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8957 states to 8957 states and 15472 transitions. [2022-11-03 03:31:18,820 INFO L78 Accepts]: Start accepts. Automaton has 8957 states and 15472 transitions. Word has length 182 [2022-11-03 03:31:18,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:31:18,820 INFO L495 AbstractCegarLoop]: Abstraction has 8957 states and 15472 transitions. [2022-11-03 03:31:18,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-03 03:31:18,821 INFO L276 IsEmpty]: Start isEmpty. Operand 8957 states and 15472 transitions. [2022-11-03 03:31:18,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-11-03 03:31:18,926 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:31:18,926 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:31:18,944 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-03 03:31:19,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:31:19,144 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:31:19,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:31:19,145 INFO L85 PathProgramCache]: Analyzing trace with hash -48249413, now seen corresponding path program 1 times [2022-11-03 03:31:19,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:31:19,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [133613054] [2022-11-03 03:31:19,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:31:19,146 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:31:19,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:31:19,148 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:31:19,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-03 03:31:19,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:31:19,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 734 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 03:31:19,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:31:19,564 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-03 03:31:19,565 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:31:19,565 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:31:19,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [133613054] [2022-11-03 03:31:19,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [133613054] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:31:19,565 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:31:19,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:31:19,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045509491] [2022-11-03 03:31:19,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:31:19,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:31:19,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:31:19,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:31:19,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:31:19,571 INFO L87 Difference]: Start difference. First operand 8957 states and 15472 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-03 03:31:21,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:31:21,080 INFO L93 Difference]: Finished difference Result 22119 states and 38519 transitions. [2022-11-03 03:31:21,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:31:21,081 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 183 [2022-11-03 03:31:21,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:31:21,144 INFO L225 Difference]: With dead ends: 22119 [2022-11-03 03:31:21,144 INFO L226 Difference]: Without dead ends: 14615 [2022-11-03 03:31:21,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:31:21,171 INFO L413 NwaCegarLoop]: 661 mSDtfsCounter, 120 mSDsluCounter, 637 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 1298 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:31:21,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 1298 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:31:21,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14615 states. [2022-11-03 03:31:24,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14615 to 14599. [2022-11-03 03:31:24,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14599 states, 12013 states have (on average 1.6345625572296678) internal successors, (19636), 12027 states have internal predecessors, (19636), 2518 states have call successors, (2518), 60 states have call predecessors, (2518), 67 states have return successors, (3120), 2515 states have call predecessors, (3120), 2514 states have call successors, (3120) [2022-11-03 03:31:24,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14599 states to 14599 states and 25274 transitions. [2022-11-03 03:31:24,090 INFO L78 Accepts]: Start accepts. Automaton has 14599 states and 25274 transitions. Word has length 183 [2022-11-03 03:31:24,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:31:24,091 INFO L495 AbstractCegarLoop]: Abstraction has 14599 states and 25274 transitions. [2022-11-03 03:31:24,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-03 03:31:24,091 INFO L276 IsEmpty]: Start isEmpty. Operand 14599 states and 25274 transitions. [2022-11-03 03:31:24,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-11-03 03:31:24,153 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:31:24,154 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:31:24,175 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-03 03:31:24,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:31:24,371 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:31:24,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:31:24,371 INFO L85 PathProgramCache]: Analyzing trace with hash 929436234, now seen corresponding path program 1 times [2022-11-03 03:31:24,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:31:24,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1462985586] [2022-11-03 03:31:24,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:31:24,372 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:31:24,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:31:24,373 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:31:24,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-03 03:31:24,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:31:24,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 694 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 03:31:24,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:31:24,785 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-11-03 03:31:24,785 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:31:24,786 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:31:24,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1462985586] [2022-11-03 03:31:24,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1462985586] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:31:24,786 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:31:24,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:31:24,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921057099] [2022-11-03 03:31:24,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:31:24,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:31:24,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:31:24,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:31:24,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:31:24,788 INFO L87 Difference]: Start difference. First operand 14599 states and 25274 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-03 03:31:27,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:31:27,806 INFO L93 Difference]: Finished difference Result 36847 states and 64145 transitions. [2022-11-03 03:31:27,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:31:27,807 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 165 [2022-11-03 03:31:27,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:31:27,906 INFO L225 Difference]: With dead ends: 36847 [2022-11-03 03:31:27,907 INFO L226 Difference]: Without dead ends: 24495 [2022-11-03 03:31:27,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:31:27,941 INFO L413 NwaCegarLoop]: 657 mSDtfsCounter, 118 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 1290 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:31:27,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 1290 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:31:27,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24495 states. [2022-11-03 03:31:32,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24495 to 24479. [2022-11-03 03:31:32,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24479 states, 20249 states have (on average 1.634846165242728) internal successors, (33104), 20263 states have internal predecessors, (33104), 4162 states have call successors, (4162), 60 states have call predecessors, (4162), 67 states have return successors, (5064), 4159 states have call predecessors, (5064), 4158 states have call successors, (5064) [2022-11-03 03:31:32,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24479 states to 24479 states and 42330 transitions. [2022-11-03 03:31:32,299 INFO L78 Accepts]: Start accepts. Automaton has 24479 states and 42330 transitions. Word has length 165 [2022-11-03 03:31:32,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:31:32,299 INFO L495 AbstractCegarLoop]: Abstraction has 24479 states and 42330 transitions. [2022-11-03 03:31:32,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-03 03:31:32,300 INFO L276 IsEmpty]: Start isEmpty. Operand 24479 states and 42330 transitions. [2022-11-03 03:31:32,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-11-03 03:31:32,378 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:31:32,379 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:31:32,404 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-03 03:31:32,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:31:32,595 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:31:32,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:31:32,595 INFO L85 PathProgramCache]: Analyzing trace with hash -574973539, now seen corresponding path program 1 times [2022-11-03 03:31:32,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:31:32,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [325905626] [2022-11-03 03:31:32,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:31:32,596 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:31:32,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:31:32,598 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:31:32,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c5c69e6d-29c3-4db2-ac5c-70cd9f1a28e4/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-03 03:31:32,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:31:32,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 738 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 03:31:32,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:31:33,023 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-03 03:31:33,023 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:31:33,023 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:31:33,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [325905626] [2022-11-03 03:31:33,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [325905626] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:31:33,024 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:31:33,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 03:31:33,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914850375] [2022-11-03 03:31:33,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:31:33,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 03:31:33,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:31:33,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 03:31:33,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 03:31:33,026 INFO L87 Difference]: Start difference. First operand 24479 states and 42330 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-03 03:31:37,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:31:37,527 INFO L93 Difference]: Finished difference Result 58553 states and 101235 transitions. [2022-11-03 03:31:37,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 03:31:37,527 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 185 [2022-11-03 03:31:37,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted.