./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.synabs.c --full-output --architecture 64bit -------------------------------------------------------------------------------- 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_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.synabs.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash bd8a86fa4f066b15db9b2bf3d5b05fdfa163a1ceac95f1ac0dba938965cde89d --- 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 [2022-11-02 21:10:39,813 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:10:39,815 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:10:39,847 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:10:39,848 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:10:39,849 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:10:39,851 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:10:39,853 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:10:39,855 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:10:39,856 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:10:39,857 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:10:39,859 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:10:39,859 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:10:39,861 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:10:39,862 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:10:39,864 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:10:39,865 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:10:39,866 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:10:39,868 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:10:39,870 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:10:39,872 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:10:39,873 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:10:39,875 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:10:39,876 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:10:39,879 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:10:39,880 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:10:39,880 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:10:39,881 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:10:39,882 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:10:39,883 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:10:39,884 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:10:39,885 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:10:39,885 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:10:39,886 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:10:39,888 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:10:39,888 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:10:39,889 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:10:39,890 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:10:39,890 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:10:39,891 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:10:39,892 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:10:39,893 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-02 21:10:39,916 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:10:39,917 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:10:39,917 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:10:39,917 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:10:39,918 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:10:39,919 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:10:39,920 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:10:39,920 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:10:39,920 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:10:39,921 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:10:39,921 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 21:10:39,921 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:10:39,921 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 21:10:39,922 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:10:39,922 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 21:10:39,922 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:10:39,923 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:10:39,923 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 21:10:39,923 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:10:39,924 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:10:39,924 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:10:39,924 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:10:39,924 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:10:39,925 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:10:39,925 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 21:10:39,925 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 21:10:39,926 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 21:10:39,926 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 21:10:39,926 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 21:10:39,927 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 21:10:39,927 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_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bd8a86fa4f066b15db9b2bf3d5b05fdfa163a1ceac95f1ac0dba938965cde89d [2022-11-02 21:10:40,180 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:10:40,208 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:10:40,216 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:10:40,219 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:10:40,220 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:10:40,222 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.synabs.c [2022-11-02 21:10:40,287 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/data/1397c84ab/7d59f308085d426682df304d3e9d4900/FLAG2075d0141 [2022-11-02 21:10:40,782 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:10:40,783 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.synabs.c [2022-11-02 21:10:40,792 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/data/1397c84ab/7d59f308085d426682df304d3e9d4900/FLAG2075d0141 [2022-11-02 21:10:41,142 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/data/1397c84ab/7d59f308085d426682df304d3e9d4900 [2022-11-02 21:10:41,144 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:10:41,146 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:10:41,148 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:10:41,148 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:10:41,159 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:10:41,160 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:10:41" (1/1) ... [2022-11-02 21:10:41,161 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8e2a7fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:41, skipping insertion in model container [2022-11-02 21:10:41,161 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:10:41" (1/1) ... [2022-11-02 21:10:41,170 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:10:41,206 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:10:41,455 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_1c808408-095b-46bd-9dbf-5b8eb930d475/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.synabs.c[1107,1120] [2022-11-02 21:10:41,538 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:10:41,542 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:10:41,565 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_1c808408-095b-46bd-9dbf-5b8eb930d475/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.synabs.c[1107,1120] [2022-11-02 21:10:41,608 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:10:41,625 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:10:41,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:41 WrapperNode [2022-11-02 21:10:41,626 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:10:41,627 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:10:41,627 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:10:41,628 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:10:41,639 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:41" (1/1) ... [2022-11-02 21:10:41,657 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:41" (1/1) ... [2022-11-02 21:10:41,702 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 123 [2022-11-02 21:10:41,702 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:10:41,703 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:10:41,703 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:10:41,703 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:10:41,719 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:41" (1/1) ... [2022-11-02 21:10:41,719 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:41" (1/1) ... [2022-11-02 21:10:41,722 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:41" (1/1) ... [2022-11-02 21:10:41,722 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:41" (1/1) ... [2022-11-02 21:10:41,729 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:41" (1/1) ... [2022-11-02 21:10:41,733 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:41" (1/1) ... [2022-11-02 21:10:41,735 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:41" (1/1) ... [2022-11-02 21:10:41,736 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:41" (1/1) ... [2022-11-02 21:10:41,739 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:10:41,740 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:10:41,741 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:10:41,741 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:10:41,742 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:41" (1/1) ... [2022-11-02 21:10:41,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:10:41,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:10:41,789 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:10:41,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:10:41,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:10:41,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:10:41,922 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:10:41,924 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:10:42,294 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:10:42,301 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:10:42,303 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 21:10:42,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:10:42 BoogieIcfgContainer [2022-11-02 21:10:42,308 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:10:42,311 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:10:42,314 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:10:42,318 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:10:42,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:10:41" (1/3) ... [2022-11-02 21:10:42,319 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44b1e0e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:10:42, skipping insertion in model container [2022-11-02 21:10:42,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:41" (2/3) ... [2022-11-02 21:10:42,320 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44b1e0e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:10:42, skipping insertion in model container [2022-11-02 21:10:42,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:10:42" (3/3) ... [2022-11-02 21:10:42,322 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.synabs.c [2022-11-02 21:10:42,343 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:10:42,344 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 21:10:42,395 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:10:42,406 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@9cc9b2b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:10:42,409 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 21:10:42,419 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 16 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:42,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 21:10:42,426 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:42,426 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 21:10:42,427 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:10:42,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:42,433 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-02 21:10:42,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:10:42,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714497933] [2022-11-02 21:10:42,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:42,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:10:42,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:10:42,708 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-02 21:10:42,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-02 21:10:42,843 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-02 21:10:42,845 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-02 21:10:42,847 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-02 21:10:42,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 21:10:42,856 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-02 21:10:42,864 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-02 21:10:42,891 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-02 21:10:42,902 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 09:10:42 BoogieIcfgContainer [2022-11-02 21:10:42,902 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-02 21:10:42,905 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 21:10:42,906 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 21:10:42,906 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 21:10:42,907 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:10:42" (3/4) ... [2022-11-02 21:10:42,910 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-02 21:10:42,911 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 21:10:42,912 INFO L158 Benchmark]: Toolchain (without parser) took 1766.06ms. Allocated memory is still 134.2MB. Free memory was 102.0MB in the beginning and 65.2MB in the end (delta: 36.8MB). Peak memory consumption was 34.7MB. Max. memory is 16.1GB. [2022-11-02 21:10:42,923 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 100.7MB. Free memory was 54.2MB in the beginning and 54.1MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 21:10:42,924 INFO L158 Benchmark]: CACSL2BoogieTranslator took 478.69ms. Allocated memory is still 134.2MB. Free memory was 101.7MB in the beginning and 107.2MB in the end (delta: -5.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-02 21:10:42,926 INFO L158 Benchmark]: Boogie Procedure Inliner took 75.16ms. Allocated memory is still 134.2MB. Free memory was 107.2MB in the beginning and 104.6MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-02 21:10:42,927 INFO L158 Benchmark]: Boogie Preprocessor took 36.58ms. Allocated memory is still 134.2MB. Free memory was 104.6MB in the beginning and 103.0MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 21:10:42,935 INFO L158 Benchmark]: RCFGBuilder took 567.84ms. Allocated memory is still 134.2MB. Free memory was 103.0MB in the beginning and 86.7MB in the end (delta: 16.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-02 21:10:42,936 INFO L158 Benchmark]: TraceAbstraction took 591.56ms. Allocated memory is still 134.2MB. Free memory was 85.8MB in the beginning and 65.3MB in the end (delta: 20.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-02 21:10:42,938 INFO L158 Benchmark]: Witness Printer took 5.35ms. Allocated memory is still 134.2MB. Free memory was 65.3MB in the beginning and 65.2MB in the end (delta: 121.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 21:10:42,945 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 100.7MB. Free memory was 54.2MB in the beginning and 54.1MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 478.69ms. Allocated memory is still 134.2MB. Free memory was 101.7MB in the beginning and 107.2MB in the end (delta: -5.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 75.16ms. Allocated memory is still 134.2MB. Free memory was 107.2MB in the beginning and 104.6MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.58ms. Allocated memory is still 134.2MB. Free memory was 104.6MB in the beginning and 103.0MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 567.84ms. Allocated memory is still 134.2MB. Free memory was 103.0MB in the beginning and 86.7MB in the end (delta: 16.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 591.56ms. Allocated memory is still 134.2MB. Free memory was 85.8MB in the beginning and 65.3MB in the end (delta: 20.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Witness Printer took 5.35ms. Allocated memory is still 134.2MB. Free memory was 65.3MB in the beginning and 65.2MB in the end (delta: 121.5kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseComplement at line 73, overapproximation of bitwiseAnd at line 67. Possible FailurePath: [L25] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L26] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L28] const SORT_4 mask_SORT_4 = (SORT_4)-1 >> (sizeof(SORT_4) * 8 - 5); [L29] const SORT_4 msb_SORT_4 = (SORT_4)1 << (5 - 1); [L31] const SORT_8 mask_SORT_8 = (SORT_8)-1 >> (sizeof(SORT_8) * 8 - 4); [L32] const SORT_8 msb_SORT_8 = (SORT_8)1 << (4 - 1); [L34] const SORT_4 var_5 = 1; [L35] const SORT_8 var_9 = 2; [L36] const SORT_1 var_15 = 1; [L37] const SORT_4 var_19 = 5; [L38] const SORT_4 var_22 = 7; [L39] const SORT_4 var_26 = 11; [L40] const SORT_4 var_29 = 3; [L41] const SORT_8 var_30 = 1; [L42] const SORT_8 var_37 = 5; [L44] SORT_1 input_2; [L45] SORT_1 input_3; [L47] SORT_4 state_6 = __VERIFIER_nondet_uchar() & mask_SORT_4; [L48] SORT_4 state_20 = __VERIFIER_nondet_uchar() & mask_SORT_4; [L49] SORT_4 state_23 = __VERIFIER_nondet_uchar() & mask_SORT_4; [L50] SORT_4 state_27 = __VERIFIER_nondet_uchar() & mask_SORT_4; [L52] SORT_4 init_7_arg_1 = var_5; [L53] state_6 = init_7_arg_1 [L54] SORT_4 init_21_arg_1 = var_19; [L55] state_20 = init_21_arg_1 [L56] SORT_4 init_24_arg_1 = var_22; [L57] state_23 = init_24_arg_1 [L58] SORT_4 init_28_arg_1 = var_26; [L59] state_27 = init_28_arg_1 VAL [init_21_arg_1=5, init_24_arg_1=7, init_28_arg_1=11, init_7_arg_1=1, mask_SORT_1=1, mask_SORT_4=31, mask_SORT_8=15, msb_SORT_1=1, msb_SORT_4=16, msb_SORT_8=8, state_20=5, state_23=7, state_27=11, state_6=1, var_15=1, var_19=5, var_22=7, var_26=11, var_29=3, var_30=1, var_37=5, var_5=1, var_9=2] [L62] input_2 = __VERIFIER_nondet_uchar() [L63] input_3 = __VERIFIER_nondet_uchar() [L66] SORT_8 var_10_arg_0 = var_9; [L67] var_10_arg_0 = var_10_arg_0 & mask_SORT_8 [L68] SORT_4 var_10 = var_10_arg_0; [L69] SORT_4 var_11_arg_0 = state_6; [L70] SORT_4 var_11_arg_1 = var_10; [L71] SORT_1 var_11 = var_11_arg_0 == var_11_arg_1; [L72] SORT_1 var_12_arg_0 = var_11; [L73] SORT_1 var_12 = ~var_12_arg_0; [L74] SORT_1 var_16_arg_0 = var_12; [L75] SORT_1 var_16 = ~var_16_arg_0; [L76] SORT_1 var_17_arg_0 = var_15; [L77] SORT_1 var_17_arg_1 = var_16; [L78] SORT_1 var_17 = var_17_arg_0 & var_17_arg_1; [L79] var_17 = var_17 & mask_SORT_1 [L80] SORT_1 bad_18_arg_0 = var_17; [L81] CALL __VERIFIER_assert(!(bad_18_arg_0)) [L20] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L20] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-02 21:10:42,994 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally 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_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.synabs.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash bd8a86fa4f066b15db9b2bf3d5b05fdfa163a1ceac95f1ac0dba938965cde89d --- 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 [2022-11-02 21:10:45,520 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:10:45,521 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:10:45,550 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:10:45,550 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:10:45,551 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:10:45,553 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:10:45,554 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:10:45,556 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:10:45,557 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:10:45,558 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:10:45,560 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:10:45,560 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:10:45,561 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:10:45,562 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:10:45,564 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:10:45,565 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:10:45,566 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:10:45,567 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:10:45,569 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:10:45,571 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:10:45,576 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:10:45,577 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:10:45,578 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:10:45,586 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:10:45,587 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:10:45,587 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:10:45,588 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:10:45,588 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:10:45,589 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:10:45,590 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:10:45,591 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:10:45,591 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:10:45,592 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:10:45,593 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:10:45,594 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:10:45,603 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:10:45,603 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:10:45,604 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:10:45,605 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:10:45,606 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:10:45,611 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-02 21:10:45,653 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:10:45,653 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:10:45,654 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:10:45,654 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:10:45,655 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:10:45,655 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:10:45,655 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:10:45,656 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:10:45,656 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:10:45,656 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:10:45,656 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:10:45,656 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 21:10:45,658 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:10:45,659 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 21:10:45,659 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-02 21:10:45,659 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-02 21:10:45,659 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-02 21:10:45,659 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:10:45,659 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:10:45,660 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 21:10:45,660 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:10:45,660 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:10:45,660 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:10:45,661 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:10:45,661 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:10:45,661 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:10:45,661 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 21:10:45,662 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-02 21:10:45,662 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-02 21:10:45,663 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 21:10:45,663 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 21:10:45,663 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 21:10:45,663 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-02 21:10:45,664 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_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bd8a86fa4f066b15db9b2bf3d5b05fdfa163a1ceac95f1ac0dba938965cde89d [2022-11-02 21:10:46,098 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:10:46,123 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:10:46,127 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:10:46,128 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:10:46,129 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:10:46,131 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.synabs.c [2022-11-02 21:10:46,204 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/data/54dbc0c78/5cf7a79a62054ecbae0e08aec46bb3d7/FLAG330b7d92d [2022-11-02 21:10:46,764 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:10:46,764 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.synabs.c [2022-11-02 21:10:46,776 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/data/54dbc0c78/5cf7a79a62054ecbae0e08aec46bb3d7/FLAG330b7d92d [2022-11-02 21:10:47,067 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/data/54dbc0c78/5cf7a79a62054ecbae0e08aec46bb3d7 [2022-11-02 21:10:47,069 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:10:47,071 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:10:47,072 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:10:47,073 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:10:47,080 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:10:47,081 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:10:47" (1/1) ... [2022-11-02 21:10:47,082 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c83f883 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:47, skipping insertion in model container [2022-11-02 21:10:47,082 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:10:47" (1/1) ... [2022-11-02 21:10:47,090 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:10:47,109 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:10:47,253 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_1c808408-095b-46bd-9dbf-5b8eb930d475/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.synabs.c[1107,1120] [2022-11-02 21:10:47,358 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:10:47,362 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:10:47,420 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_1c808408-095b-46bd-9dbf-5b8eb930d475/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.synabs.c[1107,1120] [2022-11-02 21:10:47,455 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:10:47,468 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:10:47,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:47 WrapperNode [2022-11-02 21:10:47,469 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:10:47,470 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:10:47,471 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:10:47,471 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:10:47,479 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:47" (1/1) ... [2022-11-02 21:10:47,488 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:47" (1/1) ... [2022-11-02 21:10:47,527 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 123 [2022-11-02 21:10:47,530 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:10:47,532 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:10:47,532 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:10:47,532 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:10:47,543 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:47" (1/1) ... [2022-11-02 21:10:47,544 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:47" (1/1) ... [2022-11-02 21:10:47,557 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:47" (1/1) ... [2022-11-02 21:10:47,568 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:47" (1/1) ... [2022-11-02 21:10:47,574 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:47" (1/1) ... [2022-11-02 21:10:47,590 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:47" (1/1) ... [2022-11-02 21:10:47,592 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:47" (1/1) ... [2022-11-02 21:10:47,593 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:47" (1/1) ... [2022-11-02 21:10:47,596 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:10:47,597 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:10:47,597 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:10:47,597 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:10:47,598 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:47" (1/1) ... [2022-11-02 21:10:47,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:10:47,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:10:47,644 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:10:47,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:10:47,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:10:47,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:10:47,831 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:10:47,833 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:10:48,101 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:10:48,129 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:10:48,130 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 21:10:48,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:10:48 BoogieIcfgContainer [2022-11-02 21:10:48,132 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:10:48,134 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:10:48,135 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:10:48,138 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:10:48,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:10:47" (1/3) ... [2022-11-02 21:10:48,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ba97c00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:10:48, skipping insertion in model container [2022-11-02 21:10:48,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:10:47" (2/3) ... [2022-11-02 21:10:48,140 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ba97c00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:10:48, skipping insertion in model container [2022-11-02 21:10:48,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:10:48" (3/3) ... [2022-11-02 21:10:48,142 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.synabs.c [2022-11-02 21:10:48,182 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:10:48,183 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 21:10:48,256 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:10:48,263 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6e7b87f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:10:48,264 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 21:10:48,269 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 16 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:48,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 21:10:48,276 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:48,277 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 21:10:48,278 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:10:48,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:48,285 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-02 21:10:48,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:10:48,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [949797696] [2022-11-02 21:10:48,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:48,301 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:10:48,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:10:48,306 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:10:48,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-02 21:10:48,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:48,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-02 21:10:48,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:10:48,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:10:48,749 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:10:48,750 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:10:48,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [949797696] [2022-11-02 21:10:48,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [949797696] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:10:48,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:10:48,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:10:48,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578810767] [2022-11-02 21:10:48,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:10:48,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:10:48,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:10:48,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:10:48,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:10:48,820 INFO L87 Difference]: Start difference. First operand has 17 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 16 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:48,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:48,890 INFO L93 Difference]: Finished difference Result 38 states and 57 transitions. [2022-11-02 21:10:48,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:10:48,894 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-02 21:10:48,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:48,903 INFO L225 Difference]: With dead ends: 38 [2022-11-02 21:10:48,903 INFO L226 Difference]: Without dead ends: 23 [2022-11-02 21:10:48,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:10:48,910 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 21 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:48,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 38 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:10:48,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-11-02 21:10:48,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 15. [2022-11-02 21:10:48,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:48,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2022-11-02 21:10:48,950 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 18 transitions. Word has length 5 [2022-11-02 21:10:48,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:48,951 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 18 transitions. [2022-11-02 21:10:48,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:48,952 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 18 transitions. [2022-11-02 21:10:48,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-02 21:10:48,952 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:48,953 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:10:48,967 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-02 21:10:49,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:10:49,166 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:10:49,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:49,170 INFO L85 PathProgramCache]: Analyzing trace with hash 829515481, now seen corresponding path program 1 times [2022-11-02 21:10:49,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:10:49,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1311027207] [2022-11-02 21:10:49,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:49,176 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:10:49,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:10:49,178 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:10:49,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-02 21:10:49,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:49,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 21:10:49,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:10:49,361 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:10:49,361 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:10:49,361 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:10:49,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1311027207] [2022-11-02 21:10:49,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1311027207] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:10:49,362 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:10:49,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 21:10:49,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480957353] [2022-11-02 21:10:49,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:10:49,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 21:10:49,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:10:49,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 21:10:49,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 21:10:49,367 INFO L87 Difference]: Start difference. First operand 15 states and 18 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:49,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:49,406 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2022-11-02 21:10:49,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:10:49,407 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-02 21:10:49,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:49,408 INFO L225 Difference]: With dead ends: 43 [2022-11-02 21:10:49,408 INFO L226 Difference]: Without dead ends: 32 [2022-11-02 21:10:49,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:10:49,411 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 27 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:49,412 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 48 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:10:49,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-11-02 21:10:49,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 17. [2022-11-02 21:10:49,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:49,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2022-11-02 21:10:49,418 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 14 [2022-11-02 21:10:49,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:49,418 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2022-11-02 21:10:49,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:49,419 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2022-11-02 21:10:49,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-02 21:10:49,420 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:49,420 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:10:49,445 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-02 21:10:49,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:10:49,634 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:10:49,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:49,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1509573851, now seen corresponding path program 1 times [2022-11-02 21:10:49,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:10:49,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1550751980] [2022-11-02 21:10:49,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:49,636 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:10:49,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:10:49,639 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:10:49,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-02 21:10:49,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:49,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-02 21:10:49,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:10:50,132 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:10:50,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:10:50,650 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:10:50,651 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:10:50,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1550751980] [2022-11-02 21:10:50,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1550751980] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:10:50,667 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:10:50,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-11-02 21:10:50,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896135946] [2022-11-02 21:10:50,671 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:10:50,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 21:10:50,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:10:50,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 21:10:50,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-11-02 21:10:50,674 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:50,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:50,984 INFO L93 Difference]: Finished difference Result 44 states and 54 transitions. [2022-11-02 21:10:50,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 21:10:50,985 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-02 21:10:50,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:50,989 INFO L225 Difference]: With dead ends: 44 [2022-11-02 21:10:50,989 INFO L226 Difference]: Without dead ends: 42 [2022-11-02 21:10:50,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2022-11-02 21:10:50,996 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 66 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 48 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:50,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 153 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 41 Invalid, 0 Unknown, 48 Unchecked, 0.1s Time] [2022-11-02 21:10:51,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-11-02 21:10:51,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 29. [2022-11-02 21:10:51,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 28 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:51,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions. [2022-11-02 21:10:51,019 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 14 [2022-11-02 21:10:51,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:51,019 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 36 transitions. [2022-11-02 21:10:51,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:51,020 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2022-11-02 21:10:51,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-02 21:10:51,022 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:51,022 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:10:51,036 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-02 21:10:51,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:10:51,236 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:10:51,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:51,237 INFO L85 PathProgramCache]: Analyzing trace with hash 1511420893, now seen corresponding path program 1 times [2022-11-02 21:10:51,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:10:51,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [287488994] [2022-11-02 21:10:51,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:51,238 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:10:51,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:10:51,240 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:10:51,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-02 21:10:51,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:51,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 21:10:51,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:10:51,390 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:10:51,390 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:10:51,391 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:10:51,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [287488994] [2022-11-02 21:10:51,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [287488994] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:10:51,391 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:10:51,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:10:51,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491717775] [2022-11-02 21:10:51,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:10:51,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:10:51,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:10:51,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:10:51,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:10:51,394 INFO L87 Difference]: Start difference. First operand 29 states and 36 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:51,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:51,474 INFO L93 Difference]: Finished difference Result 52 states and 66 transitions. [2022-11-02 21:10:51,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:10:51,475 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-02 21:10:51,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:51,476 INFO L225 Difference]: With dead ends: 52 [2022-11-02 21:10:51,476 INFO L226 Difference]: Without dead ends: 29 [2022-11-02 21:10:51,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:10:51,478 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 21 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:51,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 53 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 21:10:51,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-02 21:10:51,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 24. [2022-11-02 21:10:51,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:51,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2022-11-02 21:10:51,485 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 14 [2022-11-02 21:10:51,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:51,485 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2022-11-02 21:10:51,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:51,486 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2022-11-02 21:10:51,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-02 21:10:51,487 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:51,487 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-02 21:10:51,501 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-02 21:10:51,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:10:51,700 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:10:51,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:51,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1982150969, now seen corresponding path program 1 times [2022-11-02 21:10:51,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:10:51,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1309730611] [2022-11-02 21:10:51,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:51,703 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:10:51,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:10:51,704 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:10:51,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-02 21:10:51,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:51,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-02 21:10:51,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:10:51,967 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:10:51,967 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:10:52,091 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:10:52,091 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:10:52,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1309730611] [2022-11-02 21:10:52,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1309730611] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:10:52,092 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:10:52,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2022-11-02 21:10:52,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406211459] [2022-11-02 21:10:52,093 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:10:52,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:10:52,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:10:52,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:10:52,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:10:52,095 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:52,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:52,160 INFO L93 Difference]: Finished difference Result 47 states and 57 transitions. [2022-11-02 21:10:52,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:10:52,161 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-02 21:10:52,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:52,162 INFO L225 Difference]: With dead ends: 47 [2022-11-02 21:10:52,162 INFO L226 Difference]: Without dead ends: 36 [2022-11-02 21:10:52,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:10:52,164 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 20 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 13 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:52,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 68 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 13 Unchecked, 0.0s Time] [2022-11-02 21:10:52,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-11-02 21:10:52,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 26. [2022-11-02 21:10:52,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.2) internal successors, (30), 25 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:52,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2022-11-02 21:10:52,171 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 23 [2022-11-02 21:10:52,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:52,172 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2022-11-02 21:10:52,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:52,172 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2022-11-02 21:10:52,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-02 21:10:52,173 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:52,173 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2022-11-02 21:10:52,188 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-02 21:10:52,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:10:52,388 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:10:52,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:52,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1302092599, now seen corresponding path program 2 times [2022-11-02 21:10:52,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:10:52,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1690333804] [2022-11-02 21:10:52,389 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 21:10:52,389 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:10:52,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:10:52,391 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:10:52,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-02 21:10:52,510 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 21:10:52,511 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:10:52,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 21:10:52,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:10:52,692 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:10:52,692 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:10:52,790 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:10:52,790 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:10:52,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1690333804] [2022-11-02 21:10:52,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1690333804] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:10:52,791 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:10:52,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-11-02 21:10:52,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663785481] [2022-11-02 21:10:52,791 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:10:52,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 21:10:52,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:10:52,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 21:10:52,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:10:52,794 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:53,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:53,020 INFO L93 Difference]: Finished difference Result 67 states and 79 transitions. [2022-11-02 21:10:53,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 21:10:53,027 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-02 21:10:53,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:53,028 INFO L225 Difference]: With dead ends: 67 [2022-11-02 21:10:53,028 INFO L226 Difference]: Without dead ends: 56 [2022-11-02 21:10:53,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2022-11-02 21:10:53,029 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 65 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:53,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 130 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:10:53,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-11-02 21:10:53,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 28. [2022-11-02 21:10:53,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 27 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:53,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2022-11-02 21:10:53,043 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 23 [2022-11-02 21:10:53,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:53,043 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2022-11-02 21:10:53,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:53,045 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2022-11-02 21:10:53,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-02 21:10:53,049 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:53,049 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-02 21:10:53,064 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-02 21:10:53,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:10:53,250 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:10:53,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:53,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1217867335, now seen corresponding path program 1 times [2022-11-02 21:10:53,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:10:53,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [899867584] [2022-11-02 21:10:53,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:53,253 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:10:53,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:10:53,254 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:10:53,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-02 21:10:53,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:53,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-02 21:10:53,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:10:53,483 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:10:53,483 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:10:53,611 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:10:53,612 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:10:53,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [899867584] [2022-11-02 21:10:53,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [899867584] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:10:53,613 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:10:53,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2022-11-02 21:10:53,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064393230] [2022-11-02 21:10:53,613 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:10:53,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:10:53,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:10:53,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:10:53,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:10:53,616 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:53,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:53,709 INFO L93 Difference]: Finished difference Result 57 states and 67 transitions. [2022-11-02 21:10:53,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:10:53,710 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-02 21:10:53,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:53,711 INFO L225 Difference]: With dead ends: 57 [2022-11-02 21:10:53,711 INFO L226 Difference]: Without dead ends: 46 [2022-11-02 21:10:53,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-11-02 21:10:53,712 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 33 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 16 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:53,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 122 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 16 Unchecked, 0.0s Time] [2022-11-02 21:10:53,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-11-02 21:10:53,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 30. [2022-11-02 21:10:53,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 29 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:53,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2022-11-02 21:10:53,720 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 23 [2022-11-02 21:10:53,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:53,720 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2022-11-02 21:10:53,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:53,721 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2022-11-02 21:10:53,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-02 21:10:53,722 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:53,722 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:10:53,741 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-02 21:10:53,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:10:53,941 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:10:53,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:53,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1219714377, now seen corresponding path program 1 times [2022-11-02 21:10:53,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:10:53,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1229018469] [2022-11-02 21:10:53,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:53,944 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:10:53,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:10:53,945 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:10:53,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-02 21:10:54,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:54,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-02 21:10:54,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:10:54,375 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 21:10:54,376 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:10:54,966 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-02 21:10:54,967 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:10:54,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1229018469] [2022-11-02 21:10:54,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1229018469] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:10:54,967 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:10:54,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-02 21:10:54,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348987161] [2022-11-02 21:10:54,968 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:10:54,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-02 21:10:54,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:10:54,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-02 21:10:54,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2022-11-02 21:10:54,970 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:55,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:55,580 INFO L93 Difference]: Finished difference Result 72 states and 83 transitions. [2022-11-02 21:10:55,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-02 21:10:55,581 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-02 21:10:55,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:55,581 INFO L225 Difference]: With dead ends: 72 [2022-11-02 21:10:55,582 INFO L226 Difference]: Without dead ends: 70 [2022-11-02 21:10:55,582 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2022-11-02 21:10:55,583 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 79 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 75 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:55,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 167 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 100 Invalid, 0 Unknown, 75 Unchecked, 0.1s Time] [2022-11-02 21:10:55,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-11-02 21:10:55,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 35. [2022-11-02 21:10:55,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 34 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:55,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2022-11-02 21:10:55,592 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 23 [2022-11-02 21:10:55,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:55,592 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2022-11-02 21:10:55,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:55,593 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2022-11-02 21:10:55,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-02 21:10:55,594 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:55,594 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:10:55,615 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-02 21:10:55,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:10:55,807 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:10:55,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:55,807 INFO L85 PathProgramCache]: Analyzing trace with hash -177518055, now seen corresponding path program 1 times [2022-11-02 21:10:55,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:10:55,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [607472991] [2022-11-02 21:10:55,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:55,808 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:10:55,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:10:55,809 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:10:55,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-02 21:10:55,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:55,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-02 21:10:55,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:10:56,165 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:10:56,166 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:10:56,295 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:10:56,295 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:10:56,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [607472991] [2022-11-02 21:10:56,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [607472991] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:10:56,296 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:10:56,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2022-11-02 21:10:56,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912256310] [2022-11-02 21:10:56,296 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:10:56,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 21:10:56,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:10:56,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 21:10:56,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:10:56,300 INFO L87 Difference]: Start difference. First operand 35 states and 40 transitions. Second operand has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:56,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:56,540 INFO L93 Difference]: Finished difference Result 82 states and 97 transitions. [2022-11-02 21:10:56,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 21:10:56,540 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-11-02 21:10:56,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:56,541 INFO L225 Difference]: With dead ends: 82 [2022-11-02 21:10:56,542 INFO L226 Difference]: Without dead ends: 66 [2022-11-02 21:10:56,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2022-11-02 21:10:56,543 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 59 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:56,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 122 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:10:56,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-11-02 21:10:56,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 46. [2022-11-02 21:10:56,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.1777777777777778) internal successors, (53), 45 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:56,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 53 transitions. [2022-11-02 21:10:56,558 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 53 transitions. Word has length 32 [2022-11-02 21:10:56,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:56,559 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 53 transitions. [2022-11-02 21:10:56,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 10 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:56,560 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 53 transitions. [2022-11-02 21:10:56,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-02 21:10:56,564 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:56,565 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:10:56,588 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-02 21:10:56,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:10:56,780 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:10:56,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:56,781 INFO L85 PathProgramCache]: Analyzing trace with hash -175671013, now seen corresponding path program 2 times [2022-11-02 21:10:56,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:10:56,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [537436965] [2022-11-02 21:10:56,782 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 21:10:56,782 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:10:56,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:10:56,783 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:10:56,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-02 21:10:56,894 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 21:10:56,894 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:10:56,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-02 21:10:56,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:10:57,395 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-02 21:10:57,396 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:10:58,216 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-02 21:10:58,216 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:10:58,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [537436965] [2022-11-02 21:10:58,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [537436965] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:10:58,217 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:10:58,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2022-11-02 21:10:58,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032258085] [2022-11-02 21:10:58,218 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:10:58,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-02 21:10:58,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:10:58,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-02 21:10:58,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2022-11-02 21:10:58,220 INFO L87 Difference]: Start difference. First operand 46 states and 53 transitions. Second operand has 20 states, 20 states have (on average 2.2) internal successors, (44), 20 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:58,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:58,987 INFO L93 Difference]: Finished difference Result 101 states and 120 transitions. [2022-11-02 21:10:58,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-02 21:10:58,988 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.2) internal successors, (44), 20 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-11-02 21:10:58,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:58,989 INFO L225 Difference]: With dead ends: 101 [2022-11-02 21:10:58,990 INFO L226 Difference]: Without dead ends: 99 [2022-11-02 21:10:58,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=316, Invalid=1090, Unknown=0, NotChecked=0, Total=1406 [2022-11-02 21:10:58,991 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 71 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 145 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:58,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 177 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 89 Invalid, 0 Unknown, 145 Unchecked, 0.1s Time] [2022-11-02 21:10:58,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-11-02 21:10:59,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 50. [2022-11-02 21:10:59,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.2040816326530612) internal successors, (59), 49 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:59,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 59 transitions. [2022-11-02 21:10:59,003 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 59 transitions. Word has length 32 [2022-11-02 21:10:59,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:59,003 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 59 transitions. [2022-11-02 21:10:59,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.2) internal successors, (44), 20 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:59,004 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 59 transitions. [2022-11-02 21:10:59,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-02 21:10:59,004 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:59,005 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-02 21:10:59,019 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-02 21:10:59,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:10:59,217 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:10:59,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:59,218 INFO L85 PathProgramCache]: Analyzing trace with hash 504387357, now seen corresponding path program 2 times [2022-11-02 21:10:59,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:10:59,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [209295234] [2022-11-02 21:10:59,219 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 21:10:59,219 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:10:59,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:10:59,220 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:10:59,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-02 21:10:59,338 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 21:10:59,338 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:10:59,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-02 21:10:59,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:10:59,541 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 16 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:10:59,541 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:10:59,650 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 16 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:10:59,651 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:10:59,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [209295234] [2022-11-02 21:10:59,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [209295234] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:10:59,651 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:10:59,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-11-02 21:10:59,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45587709] [2022-11-02 21:10:59,652 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:10:59,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 21:10:59,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:10:59,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 21:10:59,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:10:59,654 INFO L87 Difference]: Start difference. First operand 50 states and 59 transitions. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:59,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:59,776 INFO L93 Difference]: Finished difference Result 85 states and 100 transitions. [2022-11-02 21:10:59,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 21:10:59,778 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-11-02 21:10:59,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:59,779 INFO L225 Difference]: With dead ends: 85 [2022-11-02 21:10:59,779 INFO L226 Difference]: Without dead ends: 61 [2022-11-02 21:10:59,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-02 21:10:59,780 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 34 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:59,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 142 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:10:59,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-11-02 21:10:59,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 46. [2022-11-02 21:10:59,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.1777777777777778) internal successors, (53), 45 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:59,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 53 transitions. [2022-11-02 21:10:59,790 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 53 transitions. Word has length 32 [2022-11-02 21:10:59,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:59,791 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 53 transitions. [2022-11-02 21:10:59,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:10:59,791 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 53 transitions. [2022-11-02 21:10:59,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-02 21:10:59,792 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:59,792 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-02 21:10:59,807 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2022-11-02 21:11:00,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:11:00,005 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:11:00,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:11:00,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1706796409, now seen corresponding path program 3 times [2022-11-02 21:11:00,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:11:00,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1089131866] [2022-11-02 21:11:00,007 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 21:11:00,007 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:11:00,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:11:00,008 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:11:00,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-02 21:11:00,090 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-02 21:11:00,090 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:11:00,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-02 21:11:00,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:11:00,488 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-02 21:11:00,489 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:11:00,954 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-02 21:11:00,954 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:11:00,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1089131866] [2022-11-02 21:11:00,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1089131866] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:11:00,955 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:11:00,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-11-02 21:11:00,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354183907] [2022-11-02 21:11:00,956 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:11:00,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-02 21:11:00,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:11:00,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-02 21:11:00,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-11-02 21:11:00,957 INFO L87 Difference]: Start difference. First operand 46 states and 53 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:01,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:11:01,214 INFO L93 Difference]: Finished difference Result 67 states and 79 transitions. [2022-11-02 21:11:01,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 21:11:01,215 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2022-11-02 21:11:01,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:11:01,216 INFO L225 Difference]: With dead ends: 67 [2022-11-02 21:11:01,216 INFO L226 Difference]: Without dead ends: 65 [2022-11-02 21:11:01,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=111, Invalid=269, Unknown=0, NotChecked=0, Total=380 [2022-11-02 21:11:01,217 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 43 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 22 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:11:01,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 102 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 35 Invalid, 0 Unknown, 22 Unchecked, 0.1s Time] [2022-11-02 21:11:01,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-11-02 21:11:01,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 46. [2022-11-02 21:11:01,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.1777777777777778) internal successors, (53), 45 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:01,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 53 transitions. [2022-11-02 21:11:01,228 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 53 transitions. Word has length 41 [2022-11-02 21:11:01,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:11:01,229 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 53 transitions. [2022-11-02 21:11:01,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:01,229 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 53 transitions. [2022-11-02 21:11:01,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-02 21:11:01,230 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:11:01,230 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:11:01,248 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-02 21:11:01,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:11:01,448 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:11:01,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:11:01,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1024890997, now seen corresponding path program 4 times [2022-11-02 21:11:01,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:11:01,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1564926787] [2022-11-02 21:11:01,449 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-02 21:11:01,449 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:11:01,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:11:01,450 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:11:01,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-02 21:11:01,587 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-02 21:11:01,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:11:01,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-02 21:11:01,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:11:01,995 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 11 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:11:01,995 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:11:02,272 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 11 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:11:02,273 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:11:02,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1564926787] [2022-11-02 21:11:02,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1564926787] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:11:02,273 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:11:02,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-02 21:11:02,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287149081] [2022-11-02 21:11:02,273 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:11:02,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 21:11:02,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:11:02,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 21:11:02,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2022-11-02 21:11:02,275 INFO L87 Difference]: Start difference. First operand 46 states and 53 transitions. Second operand has 18 states, 18 states have (on average 4.277777777777778) internal successors, (77), 18 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:03,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:11:03,408 INFO L93 Difference]: Finished difference Result 185 states and 236 transitions. [2022-11-02 21:11:03,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-02 21:11:03,409 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.277777777777778) internal successors, (77), 18 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2022-11-02 21:11:03,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:11:03,410 INFO L225 Difference]: With dead ends: 185 [2022-11-02 21:11:03,410 INFO L226 Difference]: Without dead ends: 143 [2022-11-02 21:11:03,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=559, Invalid=1603, Unknown=0, NotChecked=0, Total=2162 [2022-11-02 21:11:03,412 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 150 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:11:03,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 380 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 21:11:03,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2022-11-02 21:11:03,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 105. [2022-11-02 21:11:03,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 104 states have (on average 1.2307692307692308) internal successors, (128), 104 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:03,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 128 transitions. [2022-11-02 21:11:03,437 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 128 transitions. Word has length 41 [2022-11-02 21:11:03,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:11:03,437 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 128 transitions. [2022-11-02 21:11:03,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.277777777777778) internal successors, (77), 18 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:03,438 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 128 transitions. [2022-11-02 21:11:03,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-02 21:11:03,439 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:11:03,439 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1] [2022-11-02 21:11:03,455 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2022-11-02 21:11:03,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:11:03,653 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:11:03,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:11:03,653 INFO L85 PathProgramCache]: Analyzing trace with hash 1293246367, now seen corresponding path program 5 times [2022-11-02 21:11:03,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:11:03,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1962938835] [2022-11-02 21:11:03,654 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-02 21:11:03,654 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:11:03,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:11:03,656 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:11:03,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-02 21:11:03,794 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-11-02 21:11:03,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:11:03,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-02 21:11:03,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:11:03,933 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 77 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-02 21:11:03,934 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:11:04,013 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 77 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-02 21:11:04,014 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:11:04,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1962938835] [2022-11-02 21:11:04,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1962938835] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:11:04,014 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:11:04,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-11-02 21:11:04,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575405667] [2022-11-02 21:11:04,015 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:11:04,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 21:11:04,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:11:04,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 21:11:04,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:11:04,017 INFO L87 Difference]: Start difference. First operand 105 states and 128 transitions. Second operand has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:04,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:11:04,497 INFO L93 Difference]: Finished difference Result 357 states and 425 transitions. [2022-11-02 21:11:04,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-02 21:11:04,498 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2022-11-02 21:11:04,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:11:04,501 INFO L225 Difference]: With dead ends: 357 [2022-11-02 21:11:04,501 INFO L226 Difference]: Without dead ends: 260 [2022-11-02 21:11:04,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=121, Invalid=259, Unknown=0, NotChecked=0, Total=380 [2022-11-02 21:11:04,507 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 105 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:11:04,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 45 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:11:04,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2022-11-02 21:11:04,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 149. [2022-11-02 21:11:04,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 1.1689189189189189) internal successors, (173), 148 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:04,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 173 transitions. [2022-11-02 21:11:04,559 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 173 transitions. Word has length 50 [2022-11-02 21:11:04,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:11:04,559 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 173 transitions. [2022-11-02 21:11:04,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:04,560 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 173 transitions. [2022-11-02 21:11:04,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-02 21:11:04,561 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:11:04,562 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1] [2022-11-02 21:11:04,576 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-02 21:11:04,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:11:04,775 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:11:04,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:11:04,775 INFO L85 PathProgramCache]: Analyzing trace with hash -700898339, now seen corresponding path program 6 times [2022-11-02 21:11:04,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:11:04,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [839803864] [2022-11-02 21:11:04,777 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-02 21:11:04,777 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:11:04,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:11:04,778 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:11:04,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-02 21:11:04,946 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-11-02 21:11:04,947 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:11:04,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 60 conjunts are in the unsatisfiable core [2022-11-02 21:11:04,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:11:05,967 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:11:05,967 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:11:07,759 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:11:07,759 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:11:07,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [839803864] [2022-11-02 21:11:07,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [839803864] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:11:07,760 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:11:07,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28 [2022-11-02 21:11:07,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086315758] [2022-11-02 21:11:07,760 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:11:07,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-02 21:11:07,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:11:07,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-02 21:11:07,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=669, Unknown=0, NotChecked=0, Total=756 [2022-11-02 21:11:07,762 INFO L87 Difference]: Start difference. First operand 149 states and 173 transitions. Second operand has 28 states, 28 states have (on average 3.5) internal successors, (98), 28 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:17,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:11:17,667 INFO L93 Difference]: Finished difference Result 604 states and 705 transitions. [2022-11-02 21:11:17,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-11-02 21:11:17,668 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.5) internal successors, (98), 28 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2022-11-02 21:11:17,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:11:17,670 INFO L225 Difference]: With dead ends: 604 [2022-11-02 21:11:17,670 INFO L226 Difference]: Without dead ends: 602 [2022-11-02 21:11:17,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2775 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=1132, Invalid=8768, Unknown=0, NotChecked=0, Total=9900 [2022-11-02 21:11:17,676 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 268 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 672 SdHoareTripleChecker+Invalid, 840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 606 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:11:17,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 672 Invalid, 840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 217 Invalid, 0 Unknown, 606 Unchecked, 0.3s Time] [2022-11-02 21:11:17,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2022-11-02 21:11:17,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 301. [2022-11-02 21:11:17,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 300 states have (on average 1.17) internal successors, (351), 300 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:17,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 351 transitions. [2022-11-02 21:11:17,747 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 351 transitions. Word has length 50 [2022-11-02 21:11:17,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:11:17,748 INFO L495 AbstractCegarLoop]: Abstraction has 301 states and 351 transitions. [2022-11-02 21:11:17,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.5) internal successors, (98), 28 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:17,748 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 351 transitions. [2022-11-02 21:11:17,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-02 21:11:17,750 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:11:17,750 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 5, 5, 4, 2, 1, 1, 1, 1, 1, 1] [2022-11-02 21:11:17,764 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-02 21:11:17,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:11:17,955 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:11:17,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:11:17,955 INFO L85 PathProgramCache]: Analyzing trace with hash -31541495, now seen corresponding path program 7 times [2022-11-02 21:11:17,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:11:17,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1343989558] [2022-11-02 21:11:17,956 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-02 21:11:17,956 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:11:17,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:11:17,957 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:11:17,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-02 21:11:18,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:18,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 68 conjunts are in the unsatisfiable core [2022-11-02 21:11:18,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:11:19,416 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:11:19,417 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:11:21,317 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:11:21,317 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:11:21,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1343989558] [2022-11-02 21:11:21,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1343989558] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:11:21,318 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:11:21,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 30 [2022-11-02 21:11:21,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527010287] [2022-11-02 21:11:21,318 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:11:21,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-02 21:11:21,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:11:21,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-02 21:11:21,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=769, Unknown=0, NotChecked=0, Total=870 [2022-11-02 21:11:21,320 INFO L87 Difference]: Start difference. First operand 301 states and 351 transitions. Second operand has 30 states, 30 states have (on average 3.8666666666666667) internal successors, (116), 30 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:40,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:11:40,139 INFO L93 Difference]: Finished difference Result 859 states and 1000 transitions. [2022-11-02 21:11:40,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2022-11-02 21:11:40,140 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.8666666666666667) internal successors, (116), 30 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2022-11-02 21:11:40,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:11:40,143 INFO L225 Difference]: With dead ends: 859 [2022-11-02 21:11:40,143 INFO L226 Difference]: Without dead ends: 857 [2022-11-02 21:11:40,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5417 ImplicationChecksByTransitivity, 19.3s TimeCoverageRelationStatistics Valid=2083, Invalid=14687, Unknown=0, NotChecked=0, Total=16770 [2022-11-02 21:11:40,148 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 445 mSDsluCounter, 693 mSDsCounter, 0 mSdLazyCounter, 608 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 729 SdHoareTripleChecker+Invalid, 1520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 847 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:11:40,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [445 Valid, 729 Invalid, 1520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 608 Invalid, 0 Unknown, 847 Unchecked, 1.0s Time] [2022-11-02 21:11:40,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 857 states. [2022-11-02 21:11:40,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 857 to 345. [2022-11-02 21:11:40,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 344 states have (on average 1.1656976744186047) internal successors, (401), 344 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:40,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 401 transitions. [2022-11-02 21:11:40,255 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 401 transitions. Word has length 59 [2022-11-02 21:11:40,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:11:40,256 INFO L495 AbstractCegarLoop]: Abstraction has 345 states and 401 transitions. [2022-11-02 21:11:40,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 3.8666666666666667) internal successors, (116), 30 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:40,256 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 401 transitions. [2022-11-02 21:11:40,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-02 21:11:40,258 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:11:40,258 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 11, 11, 7, 5, 1, 1, 1, 1, 1, 1] [2022-11-02 21:11:40,269 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-02 21:11:40,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:11:40,459 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:11:40,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:11:40,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1066069557, now seen corresponding path program 8 times [2022-11-02 21:11:40,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:11:40,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [387039255] [2022-11-02 21:11:40,462 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 21:11:40,462 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:11:40,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:11:40,463 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:11:40,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-02 21:11:40,777 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 21:11:40,777 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:11:40,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 813 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-02 21:11:40,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:11:41,193 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 322 proven. 81 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2022-11-02 21:11:41,193 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:11:41,748 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 322 proven. 81 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2022-11-02 21:11:41,749 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:11:41,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [387039255] [2022-11-02 21:11:41,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [387039255] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:11:41,749 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:11:41,749 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2022-11-02 21:11:41,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249388058] [2022-11-02 21:11:41,750 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:11:41,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-02 21:11:41,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:11:41,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-02 21:11:41,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2022-11-02 21:11:41,752 INFO L87 Difference]: Start difference. First operand 345 states and 401 transitions. Second operand has 20 states, 20 states have (on average 4.5) internal successors, (90), 20 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:43,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:11:43,819 INFO L93 Difference]: Finished difference Result 1133 states and 1329 transitions. [2022-11-02 21:11:43,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-11-02 21:11:43,820 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.5) internal successors, (90), 20 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2022-11-02 21:11:43,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:11:43,824 INFO L225 Difference]: With dead ends: 1133 [2022-11-02 21:11:43,824 INFO L226 Difference]: Without dead ends: 1002 [2022-11-02 21:11:43,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1527 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1056, Invalid=4796, Unknown=0, NotChecked=0, Total=5852 [2022-11-02 21:11:43,826 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 165 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 438 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:11:43,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 597 Invalid, 789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 326 Invalid, 0 Unknown, 438 Unchecked, 0.4s Time] [2022-11-02 21:11:43,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1002 states. [2022-11-02 21:11:43,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1002 to 680. [2022-11-02 21:11:43,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 680 states, 679 states have (on average 1.1678939617083948) internal successors, (793), 679 states have internal predecessors, (793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:43,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680 states to 680 states and 793 transitions. [2022-11-02 21:11:43,958 INFO L78 Accepts]: Start accepts. Automaton has 680 states and 793 transitions. Word has length 113 [2022-11-02 21:11:43,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:11:43,958 INFO L495 AbstractCegarLoop]: Abstraction has 680 states and 793 transitions. [2022-11-02 21:11:43,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.5) internal successors, (90), 20 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:11:43,959 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states and 793 transitions. [2022-11-02 21:11:43,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-02 21:11:43,961 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:11:43,961 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 11, 11, 6, 6, 1, 1, 1, 1, 1, 1] [2022-11-02 21:11:43,977 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-02 21:11:44,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:11:44,175 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:11:44,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:11:44,175 INFO L85 PathProgramCache]: Analyzing trace with hash -112129399, now seen corresponding path program 9 times [2022-11-02 21:11:44,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:11:44,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1004655931] [2022-11-02 21:11:44,176 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 21:11:44,176 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:11:44,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:11:44,177 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:11:44,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-02 21:11:44,425 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2022-11-02 21:11:44,425 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:11:44,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 621 conjuncts, 101 conjunts are in the unsatisfiable core [2022-11-02 21:11:44,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:11:48,265 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 297 proven. 255 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-02 21:11:48,265 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:11:53,407 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-11-02 21:11:53,408 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:11:53,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1004655931] [2022-11-02 21:11:53,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1004655931] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:11:53,408 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:11:53,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 52 [2022-11-02 21:11:53,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167911356] [2022-11-02 21:11:53,408 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:11:53,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-11-02 21:11:53,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:11:53,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-11-02 21:11:53,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=2450, Unknown=0, NotChecked=0, Total=2652 [2022-11-02 21:11:53,411 INFO L87 Difference]: Start difference. First operand 680 states and 793 transitions. Second operand has 52 states, 52 states have (on average 3.3076923076923075) internal successors, (172), 52 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:26,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:26,824 INFO L93 Difference]: Finished difference Result 1726 states and 2003 transitions. [2022-11-02 21:12:26,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 172 states. [2022-11-02 21:12:26,824 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 3.3076923076923075) internal successors, (172), 52 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2022-11-02 21:12:26,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:26,830 INFO L225 Difference]: With dead ends: 1726 [2022-11-02 21:12:26,831 INFO L226 Difference]: Without dead ends: 1724 [2022-11-02 21:12:26,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 200 SyntacticMatches, 10 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 15 DeprecatedPredicates, 15257 ImplicationChecksByTransitivity, 38.0s TimeCoverageRelationStatistics Valid=4901, Invalid=40681, Unknown=0, NotChecked=0, Total=45582 [2022-11-02 21:12:26,839 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 250 mSDsluCounter, 1279 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 1322 SdHoareTripleChecker+Invalid, 1006 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 931 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:26,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 1322 Invalid, 1006 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 68 Invalid, 0 Unknown, 931 Unchecked, 0.1s Time] [2022-11-02 21:12:26,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1724 states. [2022-11-02 21:12:27,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1724 to 960. [2022-11-02 21:12:27,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 960 states, 959 states have (on average 1.1876955161626694) internal successors, (1139), 959 states have internal predecessors, (1139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:27,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 1139 transitions. [2022-11-02 21:12:27,022 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 1139 transitions. Word has length 113 [2022-11-02 21:12:27,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:27,022 INFO L495 AbstractCegarLoop]: Abstraction has 960 states and 1139 transitions. [2022-11-02 21:12:27,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 3.3076923076923075) internal successors, (172), 52 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:27,023 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 1139 transitions. [2022-11-02 21:12:27,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-02 21:12:27,025 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:27,025 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 11, 11, 8, 4, 1, 1, 1, 1, 1, 1] [2022-11-02 21:12:27,040 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2022-11-02 21:12:27,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:12:27,240 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:12:27,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:27,241 INFO L85 PathProgramCache]: Analyzing trace with hash -699599927, now seen corresponding path program 10 times [2022-11-02 21:12:27,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:12:27,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [163527494] [2022-11-02 21:12:27,241 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-02 21:12:27,241 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:12:27,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:12:27,242 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:12:27,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-02 21:12:27,516 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-02 21:12:27,516 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:12:27,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 813 conjuncts, 109 conjunts are in the unsatisfiable core [2022-11-02 21:12:27,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:12:29,811 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 0 proven. 618 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:12:29,811 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:12:33,989 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 0 proven. 618 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:12:33,990 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:12:33,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [163527494] [2022-11-02 21:12:33,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [163527494] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:12:33,990 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:12:33,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 42 [2022-11-02 21:12:33,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068697497] [2022-11-02 21:12:33,990 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:12:33,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-11-02 21:12:33,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:12:33,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-11-02 21:12:33,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=1561, Unknown=0, NotChecked=0, Total=1722 [2022-11-02 21:12:33,992 INFO L87 Difference]: Start difference. First operand 960 states and 1139 transitions. Second operand has 42 states, 42 states have (on average 5.333333333333333) internal successors, (224), 42 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:58,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:58,057 INFO L93 Difference]: Finished difference Result 4604 states and 5436 transitions. [2022-11-02 21:12:58,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2022-11-02 21:12:58,057 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 5.333333333333333) internal successors, (224), 42 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2022-11-02 21:12:58,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:58,069 INFO L225 Difference]: With dead ends: 4604 [2022-11-02 21:12:58,069 INFO L226 Difference]: Without dead ends: 4602 [2022-11-02 21:12:58,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5720 ImplicationChecksByTransitivity, 26.3s TimeCoverageRelationStatistics Valid=1792, Invalid=19088, Unknown=0, NotChecked=0, Total=20880 [2022-11-02 21:12:58,073 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 764 mSDsluCounter, 2573 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 764 SdHoareTripleChecker+Valid, 2688 SdHoareTripleChecker+Invalid, 1757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1195 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:58,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [764 Valid, 2688 Invalid, 1757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 528 Invalid, 0 Unknown, 1195 Unchecked, 0.8s Time] [2022-11-02 21:12:58,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4602 states. [2022-11-02 21:12:58,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4602 to 2809. [2022-11-02 21:12:58,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2809 states, 2808 states have (on average 1.1958689458689458) internal successors, (3358), 2808 states have internal predecessors, (3358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:58,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2809 states to 2809 states and 3358 transitions. [2022-11-02 21:12:58,785 INFO L78 Accepts]: Start accepts. Automaton has 2809 states and 3358 transitions. Word has length 113 [2022-11-02 21:12:58,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:58,786 INFO L495 AbstractCegarLoop]: Abstraction has 2809 states and 3358 transitions. [2022-11-02 21:12:58,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 5.333333333333333) internal successors, (224), 42 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:12:58,786 INFO L276 IsEmpty]: Start isEmpty. Operand 2809 states and 3358 transitions. [2022-11-02 21:12:58,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-11-02 21:12:58,790 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:58,790 INFO L195 NwaCegarLoop]: trace histogram [16, 15, 15, 15, 15, 15, 14, 14, 8, 7, 1, 1, 1, 1, 1, 1] [2022-11-02 21:12:58,811 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2022-11-02 21:12:59,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:12:59,003 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:12:59,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:59,003 INFO L85 PathProgramCache]: Analyzing trace with hash -516707, now seen corresponding path program 11 times [2022-11-02 21:12:59,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:12:59,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1370198353] [2022-11-02 21:12:59,004 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-02 21:12:59,004 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:12:59,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:12:59,006 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:12:59,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-02 21:12:59,477 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2022-11-02 21:12:59,478 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:12:59,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 1005 conjuncts, 57 conjunts are in the unsatisfiable core [2022-11-02 21:12:59,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:13:00,784 INFO L134 CoverageAnalysis]: Checked inductivity of 975 backedges. 520 proven. 245 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2022-11-02 21:13:00,785 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:13:01,939 INFO L134 CoverageAnalysis]: Checked inductivity of 975 backedges. 520 proven. 245 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2022-11-02 21:13:01,939 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:13:01,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1370198353] [2022-11-02 21:13:01,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1370198353] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:13:01,940 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:13:01,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 32 [2022-11-02 21:13:01,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050498311] [2022-11-02 21:13:01,940 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:13:01,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-02 21:13:01,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:13:01,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-02 21:13:01,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=899, Unknown=0, NotChecked=0, Total=992 [2022-11-02 21:13:01,942 INFO L87 Difference]: Start difference. First operand 2809 states and 3358 transitions. Second operand has 32 states, 32 states have (on average 4.75) internal successors, (152), 32 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:13:30,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:13:30,219 INFO L93 Difference]: Finished difference Result 4072 states and 4799 transitions. [2022-11-02 21:13:30,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 233 states. [2022-11-02 21:13:30,220 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.75) internal successors, (152), 32 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2022-11-02 21:13:30,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:13:30,227 INFO L225 Difference]: With dead ends: 4072 [2022-11-02 21:13:30,228 INFO L226 Difference]: Without dead ends: 3631 [2022-11-02 21:13:30,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 254 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26493 ImplicationChecksByTransitivity, 25.8s TimeCoverageRelationStatistics Valid=6083, Invalid=59197, Unknown=0, NotChecked=0, Total=65280 [2022-11-02 21:13:30,236 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 1075 mSDsluCounter, 807 mSDsCounter, 0 mSdLazyCounter, 1715 mSolverCounterSat, 378 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1075 SdHoareTripleChecker+Valid, 849 SdHoareTripleChecker+Invalid, 2093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 378 IncrementalHoareTripleChecker+Valid, 1715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-02 21:13:30,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1075 Valid, 849 Invalid, 2093 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [378 Valid, 1715 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-02 21:13:30,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3631 states. [2022-11-02 21:13:30,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3631 to 2645. [2022-11-02 21:13:30,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2645 states, 2644 states have (on average 1.1944024205748864) internal successors, (3158), 2644 states have internal predecessors, (3158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:13:30,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2645 states to 2645 states and 3158 transitions. [2022-11-02 21:13:30,887 INFO L78 Accepts]: Start accepts. Automaton has 2645 states and 3158 transitions. Word has length 140 [2022-11-02 21:13:30,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:13:30,888 INFO L495 AbstractCegarLoop]: Abstraction has 2645 states and 3158 transitions. [2022-11-02 21:13:30,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.75) internal successors, (152), 32 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 21:13:30,888 INFO L276 IsEmpty]: Start isEmpty. Operand 2645 states and 3158 transitions. [2022-11-02 21:13:30,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-11-02 21:13:30,891 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:13:30,892 INFO L195 NwaCegarLoop]: trace histogram [16, 15, 15, 15, 15, 15, 14, 14, 10, 5, 1, 1, 1, 1, 1, 1] [2022-11-02 21:13:30,912 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (21)] Ended with exit code 0 [2022-11-02 21:13:31,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 [2022-11-02 21:13:31,108 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:13:31,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:13:31,108 INFO L85 PathProgramCache]: Analyzing trace with hash 365952923, now seen corresponding path program 12 times [2022-11-02 21:13:31,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-02 21:13:31,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [432527948] [2022-11-02 21:13:31,109 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-02 21:13:31,109 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-02 21:13:31,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat [2022-11-02 21:13:31,110 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-02 21:13:31,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c808408-095b-46bd-9dbf-5b8eb930d475/bin/uautomizer-Dbtcem3rbc/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-02 21:13:31,479 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2022-11-02 21:13:31,479 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:13:31,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 1005 conjuncts, 130 conjunts are in the unsatisfiable core [2022-11-02 21:13:31,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:13:34,987 INFO L134 CoverageAnalysis]: Checked inductivity of 975 backedges. 0 proven. 975 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:13:34,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:13:41,033 INFO L134 CoverageAnalysis]: Checked inductivity of 975 backedges. 0 proven. 975 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:13:41,033 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-02 21:13:41,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [432527948] [2022-11-02 21:13:41,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [432527948] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:13:41,033 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 21:13:41,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 48 [2022-11-02 21:13:41,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24177046] [2022-11-02 21:13:41,034 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 21:13:41,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-02 21:13:41,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-02 21:13:41,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-02 21:13:41,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=1929, Unknown=0, NotChecked=0, Total=2256 [2022-11-02 21:13:41,036 INFO L87 Difference]: Start difference. First operand 2645 states and 3158 transitions. Second operand has 48 states, 48 states have (on average 5.791666666666667) internal successors, (278), 48 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)