./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal17.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b 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_d238ca8d-83b9-4116-9ba0-c7ff5334febe/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d238ca8d-83b9-4116-9ba0-c7ff5334febe/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d238ca8d-83b9-4116-9ba0-c7ff5334febe/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d238ca8d-83b9-4116-9ba0-c7ff5334febe/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal17.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d238ca8d-83b9-4116-9ba0-c7ff5334febe/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d238ca8d-83b9-4116-9ba0-c7ff5334febe/bin/utaipan-6cKwYrpEi9 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash b8b117d30748a7cc4f3f5d7fcfe97d44c4e3aeb101b917b233cc5bb356acb00c --- 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-6b4ec56 [2022-11-20 19:48:39,937 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 19:48:39,939 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 19:48:39,974 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 19:48:39,975 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 19:48:39,976 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 19:48:39,977 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 19:48:39,979 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 19:48:39,981 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 19:48:39,983 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 19:48:39,984 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 19:48:39,985 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 19:48:39,986 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 19:48:39,993 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 19:48:39,997 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 19:48:40,000 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 19:48:40,002 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 19:48:40,010 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 19:48:40,014 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 19:48:40,021 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 19:48:40,022 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 19:48:40,029 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 19:48:40,030 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 19:48:40,031 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 19:48:40,035 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 19:48:40,035 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 19:48:40,035 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 19:48:40,036 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 19:48:40,037 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 19:48:40,038 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 19:48:40,038 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 19:48:40,039 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 19:48:40,040 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 19:48:40,041 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 19:48:40,042 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 19:48:40,042 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 19:48:40,046 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 19:48:40,047 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 19:48:40,047 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 19:48:40,051 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 19:48:40,052 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 19:48:40,053 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d238ca8d-83b9-4116-9ba0-c7ff5334febe/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-20 19:48:40,102 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 19:48:40,106 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 19:48:40,107 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 19:48:40,107 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 19:48:40,108 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 19:48:40,109 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 19:48:40,109 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 19:48:40,109 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 19:48:40,109 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 19:48:40,109 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 19:48:40,110 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 19:48:40,111 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 19:48:40,111 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 19:48:40,111 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 19:48:40,111 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 19:48:40,112 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 19:48:40,112 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 19:48:40,112 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 19:48:40,113 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 19:48:40,113 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 19:48:40,113 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 19:48:40,113 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 19:48:40,114 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 19:48:40,114 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 19:48:40,114 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 19:48:40,114 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 19:48:40,115 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 19:48:40,115 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 19:48:40,116 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 19:48:40,116 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 19:48:40,116 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 19:48:40,117 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 19:48:40,117 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 19:48:40,117 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 19:48:40,117 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 19:48:40,117 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 19:48:40,118 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 19:48:40,118 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 19:48:40,118 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_d238ca8d-83b9-4116-9ba0-c7ff5334febe/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d238ca8d-83b9-4116-9ba0-c7ff5334febe/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b8b117d30748a7cc4f3f5d7fcfe97d44c4e3aeb101b917b233cc5bb356acb00c [2022-11-20 19:48:40,440 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 19:48:40,472 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 19:48:40,475 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 19:48:40,477 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 19:48:40,477 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 19:48:40,479 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d238ca8d-83b9-4116-9ba0-c7ff5334febe/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal17.c [2022-11-20 19:48:43,645 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 19:48:43,850 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 19:48:43,851 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d238ca8d-83b9-4116-9ba0-c7ff5334febe/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal17.c [2022-11-20 19:48:43,858 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d238ca8d-83b9-4116-9ba0-c7ff5334febe/bin/utaipan-6cKwYrpEi9/data/75baf1d37/a023ac9df8624bc78467ad24b8b7c5f7/FLAG9b26fa273 [2022-11-20 19:48:43,872 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d238ca8d-83b9-4116-9ba0-c7ff5334febe/bin/utaipan-6cKwYrpEi9/data/75baf1d37/a023ac9df8624bc78467ad24b8b7c5f7 [2022-11-20 19:48:43,875 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 19:48:43,876 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 19:48:43,878 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 19:48:43,878 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 19:48:43,882 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 19:48:43,883 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:48:43" (1/1) ... [2022-11-20 19:48:43,884 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bbd9e28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:48:43, skipping insertion in model container [2022-11-20 19:48:43,884 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:48:43" (1/1) ... [2022-11-20 19:48:43,892 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 19:48:43,912 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 19:48:44,046 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d238ca8d-83b9-4116-9ba0-c7ff5334febe/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal17.c[1107,1120] [2022-11-20 19:48:44,096 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 19:48:44,102 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 19:48:44,112 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d238ca8d-83b9-4116-9ba0-c7ff5334febe/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal17.c[1107,1120] [2022-11-20 19:48:44,148 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 19:48:44,161 INFO L208 MainTranslator]: Completed translation [2022-11-20 19:48:44,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:48:44 WrapperNode [2022-11-20 19:48:44,161 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 19:48:44,163 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 19:48:44,163 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 19:48:44,163 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 19:48:44,171 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:48:44" (1/1) ... [2022-11-20 19:48:44,186 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:48:44" (1/1) ... [2022-11-20 19:48:44,213 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 150 [2022-11-20 19:48:44,213 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 19:48:44,214 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 19:48:44,214 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 19:48:44,215 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 19:48:44,224 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:48:44" (1/1) ... [2022-11-20 19:48:44,224 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:48:44" (1/1) ... [2022-11-20 19:48:44,227 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:48:44" (1/1) ... [2022-11-20 19:48:44,228 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:48:44" (1/1) ... [2022-11-20 19:48:44,234 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:48:44" (1/1) ... [2022-11-20 19:48:44,238 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:48:44" (1/1) ... [2022-11-20 19:48:44,240 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:48:44" (1/1) ... [2022-11-20 19:48:44,241 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:48:44" (1/1) ... [2022-11-20 19:48:44,244 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 19:48:44,245 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 19:48:44,245 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 19:48:44,245 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 19:48:44,246 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:48:44" (1/1) ... [2022-11-20 19:48:44,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 19:48:44,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d238ca8d-83b9-4116-9ba0-c7ff5334febe/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:48:44,287 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d238ca8d-83b9-4116-9ba0-c7ff5334febe/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 19:48:44,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d238ca8d-83b9-4116-9ba0-c7ff5334febe/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 19:48:44,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 19:48:44,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 19:48:44,430 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 19:48:44,436 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 19:48:44,775 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 19:48:44,795 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 19:48:44,796 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 19:48:44,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:48:44 BoogieIcfgContainer [2022-11-20 19:48:44,798 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 19:48:44,801 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 19:48:44,801 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 19:48:44,804 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 19:48:44,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 07:48:43" (1/3) ... [2022-11-20 19:48:44,805 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fe79020 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:48:44, skipping insertion in model container [2022-11-20 19:48:44,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:48:44" (2/3) ... [2022-11-20 19:48:44,806 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fe79020 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:48:44, skipping insertion in model container [2022-11-20 19:48:44,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:48:44" (3/3) ... [2022-11-20 19:48:44,808 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.cal17.c [2022-11-20 19:48:44,834 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 19:48:44,834 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 19:48:44,901 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 19:48:44,909 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2876e303, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 19:48:44,909 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 19:48:44,913 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:48:44,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-20 19:48:44,920 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:48:44,921 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-20 19:48:44,921 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:48:44,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:48:44,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2022-11-20 19:48:44,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:48:44,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172875387] [2022-11-20 19:48:44,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:48:44,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:48:45,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 19:48:45,227 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 19:48:45,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 19:48:45,320 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-20 19:48:45,322 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 19:48:45,324 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-20 19:48:45,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 19:48:45,330 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-20 19:48:45,335 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 19:48:45,352 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-20 19:48:45,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 07:48:45 BoogieIcfgContainer [2022-11-20 19:48:45,359 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 19:48:45,360 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 19:48:45,360 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 19:48:45,360 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 19:48:45,360 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:48:44" (3/4) ... [2022-11-20 19:48:45,364 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-20 19:48:45,364 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 19:48:45,367 INFO L158 Benchmark]: Toolchain (without parser) took 1489.55ms. Allocated memory is still 178.3MB. Free memory was 134.4MB in the beginning and 133.6MB in the end (delta: 774.2kB). Peak memory consumption was 2.3MB. Max. memory is 16.1GB. [2022-11-20 19:48:45,368 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 130.0MB. Free memory was 72.4MB in the beginning and 72.3MB in the end (delta: 117.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 19:48:45,369 INFO L158 Benchmark]: CACSL2BoogieTranslator took 284.15ms. Allocated memory is still 178.3MB. Free memory was 134.4MB in the beginning and 121.8MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-20 19:48:45,370 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.12ms. Allocated memory is still 178.3MB. Free memory was 121.8MB in the beginning and 119.1MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 19:48:45,371 INFO L158 Benchmark]: Boogie Preprocessor took 30.08ms. Allocated memory is still 178.3MB. Free memory was 119.1MB in the beginning and 117.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 19:48:45,375 INFO L158 Benchmark]: RCFGBuilder took 553.44ms. Allocated memory is still 178.3MB. Free memory was 117.6MB in the beginning and 93.2MB in the end (delta: 24.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2022-11-20 19:48:45,375 INFO L158 Benchmark]: TraceAbstraction took 558.08ms. Allocated memory is still 178.3MB. Free memory was 92.5MB in the beginning and 133.6MB in the end (delta: -41.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 19:48:45,376 INFO L158 Benchmark]: Witness Printer took 5.33ms. Allocated memory is still 178.3MB. Free memory is still 133.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 19:48:45,378 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 130.0MB. Free memory was 72.4MB in the beginning and 72.3MB in the end (delta: 117.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 284.15ms. Allocated memory is still 178.3MB. Free memory was 134.4MB in the beginning and 121.8MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 51.12ms. Allocated memory is still 178.3MB. Free memory was 121.8MB in the beginning and 119.1MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.08ms. Allocated memory is still 178.3MB. Free memory was 119.1MB in the beginning and 117.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 553.44ms. Allocated memory is still 178.3MB. Free memory was 117.6MB in the beginning and 93.2MB in the end (delta: 24.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 558.08ms. Allocated memory is still 178.3MB. Free memory was 92.5MB in the beginning and 133.6MB in the end (delta: -41.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 5.33ms. Allocated memory is still 178.3MB. Free memory is still 133.6MB. 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 71, overapproximation of bitwiseOr at line 91, overapproximation of bitwiseAnd at line 60. 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_5 mask_SORT_5 = (SORT_5)-1 >> (sizeof(SORT_5) * 8 - 2); [L29] const SORT_5 msb_SORT_5 = (SORT_5)1 << (2 - 1); [L31] const SORT_1 var_10 = 0; [L32] const SORT_5 var_14 = 0; [L33] const SORT_1 var_29 = 1; [L34] const SORT_5 var_39 = 1; [L36] SORT_1 input_2; [L37] SORT_1 input_3; [L38] SORT_1 input_4; [L39] SORT_5 input_6; [L40] SORT_1 input_7; [L41] SORT_5 input_8; [L42] SORT_5 input_9; [L44] SORT_1 state_11 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L45] SORT_5 state_15 = __VERIFIER_nondet_uchar() & mask_SORT_5; [L46] SORT_1 state_17 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L47] SORT_5 state_21 = __VERIFIER_nondet_uchar() & mask_SORT_5; [L49] SORT_1 init_12_arg_1 = var_10; [L50] state_11 = init_12_arg_1 [L51] SORT_5 init_16_arg_1 = var_14; [L52] state_15 = init_16_arg_1 [L53] SORT_1 init_18_arg_1 = var_10; [L54] state_17 = init_18_arg_1 [L55] SORT_5 init_22_arg_1 = var_14; [L56] state_21 = init_22_arg_1 VAL [init_12_arg_1=0, init_16_arg_1=0, init_18_arg_1=0, init_22_arg_1=0, mask_SORT_1=1, mask_SORT_5=3, msb_SORT_1=1, msb_SORT_5=2, state_11=0, state_15=0, state_17=0, state_21=0, var_10=0, var_14=0, var_29=1, var_39=1] [L59] input_2 = __VERIFIER_nondet_uchar() [L60] input_2 = input_2 & mask_SORT_1 [L61] input_3 = __VERIFIER_nondet_uchar() [L62] input_3 = input_3 & mask_SORT_1 [L63] input_4 = __VERIFIER_nondet_uchar() [L64] input_6 = __VERIFIER_nondet_uchar() [L65] input_7 = __VERIFIER_nondet_uchar() [L66] input_8 = __VERIFIER_nondet_uchar() [L67] input_9 = __VERIFIER_nondet_uchar() [L70] SORT_1 var_13_arg_0 = state_11; [L71] SORT_1 var_13 = ~var_13_arg_0; [L72] SORT_1 var_19_arg_0 = state_17; [L73] SORT_5 var_19_arg_1 = state_15; [L74] SORT_5 var_19_arg_2 = input_6; [L75] SORT_5 var_19 = var_19_arg_0 ? var_19_arg_1 : var_19_arg_2; [L76] SORT_5 var_20_arg_0 = var_19; [L77] SORT_1 var_20 = var_20_arg_0 >> 0; [L78] var_20 = var_20 & mask_SORT_1 [L79] SORT_1 var_23_arg_0 = state_17; [L80] SORT_5 var_23_arg_1 = state_21; [L81] SORT_5 var_23_arg_2 = input_6; [L82] SORT_5 var_23 = var_23_arg_0 ? var_23_arg_1 : var_23_arg_2; [L83] SORT_5 var_24_arg_0 = var_23; [L84] SORT_1 var_24 = var_24_arg_0 >> 0; [L85] var_24 = var_24 & mask_SORT_1 [L86] SORT_1 var_25_arg_0 = var_20; [L87] SORT_1 var_25_arg_1 = var_24; [L88] SORT_1 var_25 = var_25_arg_0 == var_25_arg_1; [L89] SORT_1 var_26_arg_0 = var_13; [L90] SORT_1 var_26_arg_1 = var_25; [L91] SORT_1 var_26 = var_26_arg_0 | var_26_arg_1; [L92] SORT_1 var_30_arg_0 = var_26; [L93] SORT_1 var_30 = ~var_30_arg_0; [L94] SORT_1 var_31_arg_0 = var_29; [L95] SORT_1 var_31_arg_1 = var_30; [L96] SORT_1 var_31 = var_31_arg_0 & var_31_arg_1; [L97] var_31 = var_31 & mask_SORT_1 [L98] SORT_1 bad_32_arg_0 = var_31; [L99] CALL __VERIFIER_assert(!(bad_32_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, 7 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=7occurred 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, 4 NumberOfCodeBlocks, 4 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 [2022-11-20 19:48:45,407 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d238ca8d-83b9-4116-9ba0-c7ff5334febe/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d238ca8d-83b9-4116-9ba0-c7ff5334febe/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d238ca8d-83b9-4116-9ba0-c7ff5334febe/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d238ca8d-83b9-4116-9ba0-c7ff5334febe/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d238ca8d-83b9-4116-9ba0-c7ff5334febe/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal17.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d238ca8d-83b9-4116-9ba0-c7ff5334febe/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d238ca8d-83b9-4116-9ba0-c7ff5334febe/bin/utaipan-6cKwYrpEi9 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash b8b117d30748a7cc4f3f5d7fcfe97d44c4e3aeb101b917b233cc5bb356acb00c --- 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-6b4ec56 [2022-11-20 19:48:47,871 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 19:48:47,873 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 19:48:47,912 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 19:48:47,913 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 19:48:47,916 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 19:48:47,919 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 19:48:47,922 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 19:48:47,924 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 19:48:47,930 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 19:48:47,931 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 19:48:47,933 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 19:48:47,934 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 19:48:47,936 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 19:48:47,937 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 19:48:47,944 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 19:48:47,944 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 19:48:47,945 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 19:48:47,947 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 19:48:47,948 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 19:48:47,949 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 19:48:47,953 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 19:48:47,954 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 19:48:47,954 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 19:48:47,967 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 19:48:47,968 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 19:48:47,968 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 19:48:47,970 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 19:48:47,971 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 19:48:47,971 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 19:48:47,972 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 19:48:47,973 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 19:48:47,975 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 19:48:47,975 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 19:48:47,987 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 19:48:47,988 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 19:48:47,989 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 19:48:47,989 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 19:48:47,989 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 19:48:47,990 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 19:48:47,991 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 19:48:47,996 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d238ca8d-83b9-4116-9ba0-c7ff5334febe/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-20 19:48:48,038 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 19:48:48,039 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 19:48:48,040 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 19:48:48,041 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 19:48:48,042 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 19:48:48,042 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 19:48:48,042 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 19:48:48,043 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 19:48:48,043 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 19:48:48,043 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 19:48:48,044 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 19:48:48,045 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 19:48:48,046 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 19:48:48,046 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 19:48:48,046 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 19:48:48,046 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 19:48:48,047 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 19:48:48,047 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 19:48:48,047 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 19:48:48,047 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 19:48:48,048 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 19:48:48,048 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 19:48:48,048 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 19:48:48,048 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 19:48:48,048 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 19:48:48,049 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 19:48:48,049 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 19:48:48,049 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 19:48:48,050 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 19:48:48,050 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 19:48:48,050 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-20 19:48:48,050 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 19:48:48,051 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 19:48:48,051 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 19:48:48,051 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 19:48:48,051 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_d238ca8d-83b9-4116-9ba0-c7ff5334febe/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d238ca8d-83b9-4116-9ba0-c7ff5334febe/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b8b117d30748a7cc4f3f5d7fcfe97d44c4e3aeb101b917b233cc5bb356acb00c [2022-11-20 19:48:48,419 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 19:48:48,443 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 19:48:48,446 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 19:48:48,447 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 19:48:48,450 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 19:48:48,451 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d238ca8d-83b9-4116-9ba0-c7ff5334febe/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal17.c [2022-11-20 19:48:51,447 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 19:48:51,690 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 19:48:51,691 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d238ca8d-83b9-4116-9ba0-c7ff5334febe/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal17.c [2022-11-20 19:48:51,699 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d238ca8d-83b9-4116-9ba0-c7ff5334febe/bin/utaipan-6cKwYrpEi9/data/eb0c7aa6f/ef839982ee6c448e9e715d1b01edf042/FLAG02e616a07 [2022-11-20 19:48:51,719 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d238ca8d-83b9-4116-9ba0-c7ff5334febe/bin/utaipan-6cKwYrpEi9/data/eb0c7aa6f/ef839982ee6c448e9e715d1b01edf042 [2022-11-20 19:48:51,721 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 19:48:51,722 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 19:48:51,729 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 19:48:51,729 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 19:48:51,732 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 19:48:51,733 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:48:51" (1/1) ... [2022-11-20 19:48:51,734 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ace3b5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:48:51, skipping insertion in model container [2022-11-20 19:48:51,735 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:48:51" (1/1) ... [2022-11-20 19:48:51,742 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 19:48:51,766 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 19:48:51,934 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d238ca8d-83b9-4116-9ba0-c7ff5334febe/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal17.c[1107,1120] [2022-11-20 19:48:52,033 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 19:48:52,039 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 19:48:52,052 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d238ca8d-83b9-4116-9ba0-c7ff5334febe/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal17.c[1107,1120] [2022-11-20 19:48:52,096 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 19:48:52,111 INFO L208 MainTranslator]: Completed translation [2022-11-20 19:48:52,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:48:52 WrapperNode [2022-11-20 19:48:52,112 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 19:48:52,113 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 19:48:52,113 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 19:48:52,113 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 19:48:52,121 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:48:52" (1/1) ... [2022-11-20 19:48:52,143 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:48:52" (1/1) ... [2022-11-20 19:48:52,180 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 150 [2022-11-20 19:48:52,180 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 19:48:52,181 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 19:48:52,181 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 19:48:52,181 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 19:48:52,191 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:48:52" (1/1) ... [2022-11-20 19:48:52,192 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:48:52" (1/1) ... [2022-11-20 19:48:52,213 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:48:52" (1/1) ... [2022-11-20 19:48:52,213 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:48:52" (1/1) ... [2022-11-20 19:48:52,218 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:48:52" (1/1) ... [2022-11-20 19:48:52,221 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:48:52" (1/1) ... [2022-11-20 19:48:52,222 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:48:52" (1/1) ... [2022-11-20 19:48:52,239 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:48:52" (1/1) ... [2022-11-20 19:48:52,241 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 19:48:52,242 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 19:48:52,242 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 19:48:52,243 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 19:48:52,243 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:48:52" (1/1) ... [2022-11-20 19:48:52,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 19:48:52,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d238ca8d-83b9-4116-9ba0-c7ff5334febe/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:48:52,276 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d238ca8d-83b9-4116-9ba0-c7ff5334febe/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 19:48:52,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d238ca8d-83b9-4116-9ba0-c7ff5334febe/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 19:48:52,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 19:48:52,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 19:48:52,431 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 19:48:52,433 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 19:48:52,750 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 19:48:52,759 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 19:48:52,764 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 19:48:52,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:48:52 BoogieIcfgContainer [2022-11-20 19:48:52,766 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 19:48:52,769 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 19:48:52,771 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 19:48:52,774 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 19:48:52,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 07:48:51" (1/3) ... [2022-11-20 19:48:52,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@412cd0c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:48:52, skipping insertion in model container [2022-11-20 19:48:52,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:48:52" (2/3) ... [2022-11-20 19:48:52,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@412cd0c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:48:52, skipping insertion in model container [2022-11-20 19:48:52,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:48:52" (3/3) ... [2022-11-20 19:48:52,780 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.cal17.c [2022-11-20 19:48:52,804 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 19:48:52,804 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 19:48:52,883 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 19:48:52,893 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@30068a6e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 19:48:52,893 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 19:48:52,897 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:48:52,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 19:48:52,904 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:48:52,905 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-20 19:48:52,906 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:48:52,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:48:52,913 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-20 19:48:52,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 19:48:52,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1803746726] [2022-11-20 19:48:52,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:48:52,929 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 19:48:52,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d238ca8d-83b9-4116-9ba0-c7ff5334febe/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 19:48:52,939 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d238ca8d-83b9-4116-9ba0-c7ff5334febe/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 19:48:52,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d238ca8d-83b9-4116-9ba0-c7ff5334febe/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-20 19:48:53,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:48:53,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 19:48:53,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:48:53,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:48:53,316 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 19:48:53,317 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 19:48:53,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1803746726] [2022-11-20 19:48:53,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1803746726] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:48:53,318 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:48:53,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 19:48:53,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498416125] [2022-11-20 19:48:53,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:48:53,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 19:48:53,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 19:48:53,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 19:48:53,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 19:48:53,403 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 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) [2022-11-20 19:48:53,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:48:53,469 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-11-20 19:48:53,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 19:48:53,472 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 [2022-11-20 19:48:53,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:48:53,480 INFO L225 Difference]: With dead ends: 20 [2022-11-20 19:48:53,480 INFO L226 Difference]: Without dead ends: 11 [2022-11-20 19:48:53,483 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 [2022-11-20 19:48:53,488 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 19:48:53,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 19:48:53,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-20 19:48:53,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-11-20 19:48:53,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:48:53,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-20 19:48:53,523 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-11-20 19:48:53,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:48:53,524 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-20 19:48:53,524 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) [2022-11-20 19:48:53,525 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-20 19:48:53,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-20 19:48:53,525 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:48:53,525 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-20 19:48:53,544 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d238ca8d-83b9-4116-9ba0-c7ff5334febe/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-20 19:48:53,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d238ca8d-83b9-4116-9ba0-c7ff5334febe/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 19:48:53,737 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:48:53,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:48:53,738 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-11-20 19:48:53,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 19:48:53,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1760231590] [2022-11-20 19:48:53,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:48:53,740 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 19:48:53,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d238ca8d-83b9-4116-9ba0-c7ff5334febe/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 19:48:53,742 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d238ca8d-83b9-4116-9ba0-c7ff5334febe/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 19:48:53,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d238ca8d-83b9-4116-9ba0-c7ff5334febe/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-20 19:48:53,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:48:53,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-20 19:48:53,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:48:54,097 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:48:54,097 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 19:48:54,799 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:48:54,799 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 19:48:54,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1760231590] [2022-11-20 19:48:54,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1760231590] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 19:48:54,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1640541413] [2022-11-20 19:48:54,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:48:54,800 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 19:48:54,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d238ca8d-83b9-4116-9ba0-c7ff5334febe/bin/utaipan-6cKwYrpEi9/cvc4 [2022-11-20 19:48:54,807 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d238ca8d-83b9-4116-9ba0-c7ff5334febe/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 19:48:54,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d238ca8d-83b9-4116-9ba0-c7ff5334febe/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-11-20 19:48:55,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:48:55,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-20 19:48:55,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:48:55,151 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:48:55,151 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 19:48:55,559 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:48:55,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1640541413] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 19:48:55,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238168091] [2022-11-20 19:48:55,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:48:55,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:48:55,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d238ca8d-83b9-4116-9ba0-c7ff5334febe/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:48:55,571 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d238ca8d-83b9-4116-9ba0-c7ff5334febe/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 19:48:55,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d238ca8d-83b9-4116-9ba0-c7ff5334febe/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 19:48:55,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:48:55,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 42 conjunts are in the unsatisfiable core [2022-11-20 19:48:55,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:48:55,859 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:48:55,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 19:48:56,309 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:48:56,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [238168091] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 19:48:56,314 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-20 19:48:56,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 6, 6] total 11 [2022-11-20 19:48:56,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152921607] [2022-11-20 19:48:56,316 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-20 19:48:56,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 19:48:56,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 19:48:56,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 19:48:56,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-11-20 19:48:56,319 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 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) [2022-11-20 19:48:56,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:48:56,415 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-11-20 19:48:56,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 19:48:56,416 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 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) Word has length 8 [2022-11-20 19:48:56,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:48:56,417 INFO L225 Difference]: With dead ends: 16 [2022-11-20 19:48:56,417 INFO L226 Difference]: Without dead ends: 14 [2022-11-20 19:48:56,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 29 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2022-11-20 19:48:56,422 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 11 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 17 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 19:48:56,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 22 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 17 Unchecked, 0.0s Time] [2022-11-20 19:48:56,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-20 19:48:56,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2022-11-20 19:48:56,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:48:56,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-11-20 19:48:56,426 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2022-11-20 19:48:56,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:48:56,426 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-11-20 19:48:56,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 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) [2022-11-20 19:48:56,426 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-11-20 19:48:56,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 19:48:56,427 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:48:56,427 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-20 19:48:56,441 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d238ca8d-83b9-4116-9ba0-c7ff5334febe/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-11-20 19:48:56,645 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d238ca8d-83b9-4116-9ba0-c7ff5334febe/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 19:48:56,843 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d238ca8d-83b9-4116-9ba0-c7ff5334febe/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2022-11-20 19:48:57,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d238ca8d-83b9-4116-9ba0-c7ff5334febe/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d238ca8d-83b9-4116-9ba0-c7ff5334febe/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d238ca8d-83b9-4116-9ba0-c7ff5334febe/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt [2022-11-20 19:48:57,042 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 19:48:57,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:48:57,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1020920393, now seen corresponding path program 2 times [2022-11-20 19:48:57,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 19:48:57,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1206234286] [2022-11-20 19:48:57,044 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 19:48:57,044 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 19:48:57,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d238ca8d-83b9-4116-9ba0-c7ff5334febe/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 19:48:57,045 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d238ca8d-83b9-4116-9ba0-c7ff5334febe/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 19:48:57,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d238ca8d-83b9-4116-9ba0-c7ff5334febe/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-20 19:48:57,169 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 19:48:57,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 19:48:57,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-20 19:48:57,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:48:57,452 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:48:57,452 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 19:48:58,286 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:48:58,286 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 19:48:58,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1206234286] [2022-11-20 19:48:58,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1206234286] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 19:48:58,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [175116931] [2022-11-20 19:48:58,287 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 19:48:58,287 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 19:48:58,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d238ca8d-83b9-4116-9ba0-c7ff5334febe/bin/utaipan-6cKwYrpEi9/cvc4 [2022-11-20 19:48:58,289 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d238ca8d-83b9-4116-9ba0-c7ff5334febe/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 19:48:58,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d238ca8d-83b9-4116-9ba0-c7ff5334febe/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-11-20 19:48:58,534 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 19:48:58,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 19:48:58,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 64 conjunts are in the unsatisfiable core [2022-11-20 19:48:58,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:48:59,015 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:48:59,015 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 19:49:00,320 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:49:00,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [175116931] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 19:49:00,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406805673] [2022-11-20 19:49:00,321 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 19:49:00,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 19:49:00,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d238ca8d-83b9-4116-9ba0-c7ff5334febe/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:49:00,323 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d238ca8d-83b9-4116-9ba0-c7ff5334febe/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 19:49:00,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d238ca8d-83b9-4116-9ba0-c7ff5334febe/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 19:49:00,439 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 19:49:00,439 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 19:49:00,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 57 conjunts are in the unsatisfiable core [2022-11-20 19:49:00,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 19:49:00,694 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:49:00,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 19:49:02,039 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:49:02,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1406805673] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 19:49:02,040 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-20 19:49:02,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7, 6, 6, 6] total 17 [2022-11-20 19:49:02,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166357693] [2022-11-20 19:49:02,041 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-20 19:49:02,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-20 19:49:02,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 19:49:02,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-20 19:49:02,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2022-11-20 19:49:02,044 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 17 states, 17 states have (on average 2.176470588235294) internal successors, (37), 17 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:49:02,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:49:02,390 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2022-11-20 19:49:02,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 19:49:02,390 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.176470588235294) internal successors, (37), 17 states have internal predecessors, (37), 0 states have call successors, (0), 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 11 [2022-11-20 19:49:02,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:49:02,391 INFO L225 Difference]: With dead ends: 14 [2022-11-20 19:49:02,391 INFO L226 Difference]: Without dead ends: 0 [2022-11-20 19:49:02,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 41 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=157, Invalid=395, Unknown=0, NotChecked=0, Total=552 [2022-11-20 19:49:02,392 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 7 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 12 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 19:49:02,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 20 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 12 Unchecked, 0.0s Time] [2022-11-20 19:49:02,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-20 19:49:02,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-20 19:49:02,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:49:02,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-20 19:49:02,397 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2022-11-20 19:49:02,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:49:02,399 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 19:49:02,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.176470588235294) internal successors, (37), 17 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:49:02,399 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-20 19:49:02,400 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-20 19:49:02,402 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-20 19:49:02,412 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d238ca8d-83b9-4116-9ba0-c7ff5334febe/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 19:49:02,616 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d238ca8d-83b9-4116-9ba0-c7ff5334febe/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-20 19:49:02,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d238ca8d-83b9-4116-9ba0-c7ff5334febe/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2022-11-20 19:49:03,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d238ca8d-83b9-4116-9ba0-c7ff5334febe/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d238ca8d-83b9-4116-9ba0-c7ff5334febe/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d238ca8d-83b9-4116-9ba0-c7ff5334febe/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt [2022-11-20 19:49:03,011 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-20 19:49:03,173 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-20 19:49:03,173 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-20 19:49:03,174 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-20 19:49:03,174 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-20 19:49:03,174 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 20) no Hoare annotation was computed. [2022-11-20 19:49:03,174 INFO L895 garLoopResultBuilder]: At program point L57-2(lines 57 162) the Hoare annotation is: (let ((.cse3 (= |ULTIMATE.start_main_~var_10~0#1| (_ bv0 8))) (.cse4 (= |ULTIMATE.start_main_~var_29~0#1| |ULTIMATE.start_main_~state_11~0#1|)) (.cse0 (= (_ bv1 8) |ULTIMATE.start_main_~mask_SORT_1~0#1|)) (.cse1 (= (_ bv1 8) |ULTIMATE.start_main_~var_39~0#1|)) (.cse5 (= (_ bv1 8) |ULTIMATE.start_main_~var_29~0#1|))) (or (let ((.cse2 ((_ zero_extend 24) |ULTIMATE.start_main_~mask_SORT_1~0#1|))) (and .cse0 (not (= |ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv0 32))) .cse1 (= ((_ extract 7 0) (bvand (_ bv1 32) .cse2)) |ULTIMATE.start_main_~state_17~0#1|) .cse3 (= |ULTIMATE.start_main_~var_20~0#1| ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |ULTIMATE.start_main_~var_19~0#1|))) .cse2))) .cse4 .cse5 (exists ((|ULTIMATE.start_main_~var_44~0#1| (_ BitVec 8))) (let ((.cse6 ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |ULTIMATE.start_main_~var_44~0#1|)))))) (and (= .cse6 |ULTIMATE.start_main_~state_21~0#1|) (= .cse6 |ULTIMATE.start_main_~state_15~0#1|)))))) (and .cse0 (= |ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32)) .cse1 .cse3 (= (_ bv0 8) |ULTIMATE.start_main_~state_17~0#1|) .cse4 .cse5) (and .cse0 .cse1 (= (_ bv0 8) |ULTIMATE.start_main_~state_11~0#1|) (= |ULTIMATE.start_main_~var_10~0#1| |ULTIMATE.start_main_~state_11~0#1|) .cse5))) [2022-11-20 19:49:03,175 INFO L899 garLoopResultBuilder]: For program point L57-3(lines 57 162) no Hoare annotation was computed. [2022-11-20 19:49:03,175 INFO L899 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed. [2022-11-20 19:49:03,175 INFO L899 garLoopResultBuilder]: For program point L20-1(line 20) no Hoare annotation was computed. [2022-11-20 19:49:03,175 INFO L899 garLoopResultBuilder]: For program point L20-3(line 20) no Hoare annotation was computed. [2022-11-20 19:49:03,175 INFO L895 garLoopResultBuilder]: At program point L163(lines 22 164) the Hoare annotation is: false [2022-11-20 19:49:03,179 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1] [2022-11-20 19:49:03,181 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 19:49:03,189 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~var_44~0#1,QUANTIFIED] [2022-11-20 19:49:03,191 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~var_44~0#1,QUANTIFIED] [2022-11-20 19:49:03,196 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~var_44~0#1,QUANTIFIED] [2022-11-20 19:49:03,199 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~var_44~0#1,QUANTIFIED] [2022-11-20 19:49:03,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 07:49:03 BoogieIcfgContainer [2022-11-20 19:49:03,201 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 19:49:03,202 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 19:49:03,202 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 19:49:03,203 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 19:49:03,203 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:48:52" (3/4) ... [2022-11-20 19:49:03,207 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 19:49:03,223 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2022-11-20 19:49:03,223 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-20 19:49:03,223 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 19:49:03,251 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((1bv8 == mask_SORT_1 && !(cond == 0bv32)) && 1bv8 == var_39) && ~bvand32(1bv32, ~zero_extendFrom8To32(mask_SORT_1))[7:0] == state_17) && var_10 == 0bv8) && var_20 == ~bvand32(~zero_extendFrom8To32(~zero_extendFrom8To32(var_19)[7:0]), ~zero_extendFrom8To32(mask_SORT_1))[7:0]) && var_29 == state_11) && 1bv8 == var_29) && (\exists ULTIMATE.start_main_~var_44~0#1 : bv8 :: ~zero_extendFrom8To32(~zero_extendFrom8To32(ULTIMATE.start_main_~var_44~0#1)[7:0])[7:0] == state_21 && ~zero_extendFrom8To32(~zero_extendFrom8To32(ULTIMATE.start_main_~var_44~0#1)[7:0])[7:0] == state_15)) || ((((((1bv8 == mask_SORT_1 && cond == 1bv32) && 1bv8 == var_39) && var_10 == 0bv8) && 0bv8 == state_17) && var_29 == state_11) && 1bv8 == var_29)) || ((((1bv8 == mask_SORT_1 && 1bv8 == var_39) && 0bv8 == state_11) && var_10 == state_11) && 1bv8 == var_29) [2022-11-20 19:49:03,269 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d238ca8d-83b9-4116-9ba0-c7ff5334febe/bin/utaipan-6cKwYrpEi9/witness.graphml [2022-11-20 19:49:03,269 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 19:49:03,270 INFO L158 Benchmark]: Toolchain (without parser) took 11547.47ms. Allocated memory was 71.3MB in the beginning and 209.7MB in the end (delta: 138.4MB). Free memory was 51.8MB in the beginning and 139.8MB in the end (delta: -88.0MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. [2022-11-20 19:49:03,270 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 71.3MB. Free memory was 49.6MB in the beginning and 49.5MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 19:49:03,271 INFO L158 Benchmark]: CACSL2BoogieTranslator took 383.26ms. Allocated memory is still 71.3MB. Free memory was 51.5MB in the beginning and 38.8MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-20 19:49:03,271 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.68ms. Allocated memory is still 71.3MB. Free memory was 38.8MB in the beginning and 36.6MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 19:49:03,271 INFO L158 Benchmark]: Boogie Preprocessor took 60.85ms. Allocated memory is still 71.3MB. Free memory was 36.6MB in the beginning and 35.0MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 19:49:03,272 INFO L158 Benchmark]: RCFGBuilder took 524.23ms. Allocated memory was 71.3MB in the beginning and 96.5MB in the end (delta: 25.2MB). Free memory was 35.0MB in the beginning and 66.9MB in the end (delta: -31.9MB). Peak memory consumption was 11.1MB. Max. memory is 16.1GB. [2022-11-20 19:49:03,272 INFO L158 Benchmark]: TraceAbstraction took 10431.80ms. Allocated memory was 96.5MB in the beginning and 209.7MB in the end (delta: 113.2MB). Free memory was 66.0MB in the beginning and 144.0MB in the end (delta: -77.9MB). Peak memory consumption was 35.1MB. Max. memory is 16.1GB. [2022-11-20 19:49:03,272 INFO L158 Benchmark]: Witness Printer took 67.14ms. Allocated memory is still 209.7MB. Free memory was 144.0MB in the beginning and 139.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-20 19:49:03,274 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 71.3MB. Free memory was 49.6MB in the beginning and 49.5MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 383.26ms. Allocated memory is still 71.3MB. Free memory was 51.5MB in the beginning and 38.8MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 67.68ms. Allocated memory is still 71.3MB. Free memory was 38.8MB in the beginning and 36.6MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 60.85ms. Allocated memory is still 71.3MB. Free memory was 36.6MB in the beginning and 35.0MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 524.23ms. Allocated memory was 71.3MB in the beginning and 96.5MB in the end (delta: 25.2MB). Free memory was 35.0MB in the beginning and 66.9MB in the end (delta: -31.9MB). Peak memory consumption was 11.1MB. Max. memory is 16.1GB. * TraceAbstraction took 10431.80ms. Allocated memory was 96.5MB in the beginning and 209.7MB in the end (delta: 113.2MB). Free memory was 66.0MB in the beginning and 144.0MB in the end (delta: -77.9MB). Peak memory consumption was 35.1MB. Max. memory is 16.1GB. * Witness Printer took 67.14ms. Allocated memory is still 209.7MB. Free memory was 144.0MB in the beginning and 139.8MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~var_44~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~var_44~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~var_44~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~var_44~0#1,QUANTIFIED] * 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 - PositiveResult [Line: 20]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 10.3s, OverallIterations: 3, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 22 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 22 mSDsluCounter, 55 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 29 IncrementalHoareTripleChecker+Unchecked, 42 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 46 IncrementalHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 13 mSDtfsCounter, 46 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 116 GetRequests, 72 SyntacticMatches, 8 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=2, InterpolantAutomatonStates: 22, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 6 NumberOfFragments, 93 HoareAnnotationTreeSize, 2 FomulaSimplifications, 20 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 55 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 6.8s InterpolantComputationTime, 62 NumberOfCodeBlocks, 62 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 106 ConstructedInterpolants, 36 QuantifiedInterpolants, 2713 SizeOfPredicates, 332 NumberOfNonLiveVariables, 1229 ConjunctsInSsa, 297 ConjunctsInUnsatCore, 13 InterpolantComputations, 1 PerfectInterpolantSequences, 6/54 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 57]: Loop Invariant [2022-11-20 19:49:03,299 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~var_44~0#1,QUANTIFIED] [2022-11-20 19:49:03,302 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~var_44~0#1,QUANTIFIED] [2022-11-20 19:49:03,302 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~var_44~0#1,QUANTIFIED] [2022-11-20 19:49:03,303 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~var_44~0#1,QUANTIFIED] Derived loop invariant: (((((((((1bv8 == mask_SORT_1 && !(cond == 0bv32)) && 1bv8 == var_39) && ~bvand32(1bv32, ~zero_extendFrom8To32(mask_SORT_1))[7:0] == state_17) && var_10 == 0bv8) && var_20 == ~bvand32(~zero_extendFrom8To32(~zero_extendFrom8To32(var_19)[7:0]), ~zero_extendFrom8To32(mask_SORT_1))[7:0]) && var_29 == state_11) && 1bv8 == var_29) && (\exists ULTIMATE.start_main_~var_44~0#1 : bv8 :: ~zero_extendFrom8To32(~zero_extendFrom8To32(ULTIMATE.start_main_~var_44~0#1)[7:0])[7:0] == state_21 && ~zero_extendFrom8To32(~zero_extendFrom8To32(ULTIMATE.start_main_~var_44~0#1)[7:0])[7:0] == state_15)) || ((((((1bv8 == mask_SORT_1 && cond == 1bv32) && 1bv8 == var_39) && var_10 == 0bv8) && 0bv8 == state_17) && var_29 == state_11) && 1bv8 == var_29)) || ((((1bv8 == mask_SORT_1 && 1bv8 == var_39) && 0bv8 == state_11) && var_10 == state_11) && 1bv8 == var_29) RESULT: Ultimate proved your program to be correct! [2022-11-20 19:49:03,323 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d238ca8d-83b9-4116-9ba0-c7ff5334febe/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE