./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.noninitstate.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_5e0a2992-8341-4611-86d9-748e3f318950/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e0a2992-8341-4611-86d9-748e3f318950/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_5e0a2992-8341-4611-86d9-748e3f318950/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e0a2992-8341-4611-86d9-748e3f318950/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.noninitstate.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e0a2992-8341-4611-86d9-748e3f318950/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_5e0a2992-8341-4611-86d9-748e3f318950/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 73e232604fc8babca2c5f057d102e5792a7cbb61e14baa729377b71bb6569c56 --- 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 21:27:49,058 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 21:27:49,061 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 21:27:49,104 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 21:27:49,105 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 21:27:49,106 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 21:27:49,107 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 21:27:49,109 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 21:27:49,111 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 21:27:49,112 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 21:27:49,118 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 21:27:49,125 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 21:27:49,126 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 21:27:49,127 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 21:27:49,128 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 21:27:49,129 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 21:27:49,130 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 21:27:49,131 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 21:27:49,132 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 21:27:49,134 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 21:27:49,136 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 21:27:49,137 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 21:27:49,138 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 21:27:49,139 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 21:27:49,143 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 21:27:49,143 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 21:27:49,144 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 21:27:49,144 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 21:27:49,145 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 21:27:49,146 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 21:27:49,146 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 21:27:49,147 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 21:27:49,148 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 21:27:49,149 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 21:27:49,150 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 21:27:49,150 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 21:27:49,151 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 21:27:49,151 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 21:27:49,151 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 21:27:49,152 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 21:27:49,153 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 21:27:49,155 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e0a2992-8341-4611-86d9-748e3f318950/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-20 21:27:49,197 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 21:27:49,198 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 21:27:49,198 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 21:27:49,199 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 21:27:49,200 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 21:27:49,200 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 21:27:49,200 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 21:27:49,200 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 21:27:49,201 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 21:27:49,201 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 21:27:49,202 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 21:27:49,202 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 21:27:49,203 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 21:27:49,203 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 21:27:49,203 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 21:27:49,203 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 21:27:49,204 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 21:27:49,204 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 21:27:49,205 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 21:27:49,205 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 21:27:49,206 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 21:27:49,206 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 21:27:49,206 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 21:27:49,206 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 21:27:49,207 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 21:27:49,207 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 21:27:49,208 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 21:27:49,208 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 21:27:49,208 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 21:27:49,208 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 21:27:49,209 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 21:27:49,209 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 21:27:49,209 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 21:27:49,210 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 21:27:49,210 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 21:27:49,210 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 21:27:49,210 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 21:27:49,211 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 21:27:49,211 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_5e0a2992-8341-4611-86d9-748e3f318950/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e0a2992-8341-4611-86d9-748e3f318950/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 73e232604fc8babca2c5f057d102e5792a7cbb61e14baa729377b71bb6569c56 [2022-11-20 21:27:49,539 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 21:27:49,574 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 21:27:49,576 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 21:27:49,578 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 21:27:49,578 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 21:27:49,580 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e0a2992-8341-4611-86d9-748e3f318950/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.noninitstate.c [2022-11-20 21:27:52,800 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 21:27:53,016 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 21:27:53,016 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e0a2992-8341-4611-86d9-748e3f318950/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.noninitstate.c [2022-11-20 21:27:53,024 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e0a2992-8341-4611-86d9-748e3f318950/bin/utaipan-6cKwYrpEi9/data/a2c44f55b/beb3e28349514be18a9bff2fc4afb146/FLAG17667ffb3 [2022-11-20 21:27:53,043 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e0a2992-8341-4611-86d9-748e3f318950/bin/utaipan-6cKwYrpEi9/data/a2c44f55b/beb3e28349514be18a9bff2fc4afb146 [2022-11-20 21:27:53,046 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 21:27:53,047 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 21:27:53,049 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 21:27:53,049 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 21:27:53,053 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 21:27:53,054 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:27:53" (1/1) ... [2022-11-20 21:27:53,056 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d28ba68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:53, skipping insertion in model container [2022-11-20 21:27:53,056 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:27:53" (1/1) ... [2022-11-20 21:27:53,064 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 21:27:53,080 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 21:27:53,215 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_5e0a2992-8341-4611-86d9-748e3f318950/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.noninitstate.c[1117,1130] [2022-11-20 21:27:53,245 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 21:27:53,250 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 21:27:53,263 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_5e0a2992-8341-4611-86d9-748e3f318950/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.noninitstate.c[1117,1130] [2022-11-20 21:27:53,277 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 21:27:53,288 INFO L208 MainTranslator]: Completed translation [2022-11-20 21:27:53,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:53 WrapperNode [2022-11-20 21:27:53,289 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 21:27:53,290 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 21:27:53,290 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 21:27:53,290 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 21:27:53,296 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:53" (1/1) ... [2022-11-20 21:27:53,303 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:53" (1/1) ... [2022-11-20 21:27:53,331 INFO L138 Inliner]: procedures = 11, calls = 4, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 62 [2022-11-20 21:27:53,331 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 21:27:53,332 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 21:27:53,332 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 21:27:53,332 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 21:27:53,342 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:53" (1/1) ... [2022-11-20 21:27:53,342 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:53" (1/1) ... [2022-11-20 21:27:53,344 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:53" (1/1) ... [2022-11-20 21:27:53,344 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:53" (1/1) ... [2022-11-20 21:27:53,349 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:53" (1/1) ... [2022-11-20 21:27:53,352 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:53" (1/1) ... [2022-11-20 21:27:53,353 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:53" (1/1) ... [2022-11-20 21:27:53,354 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:53" (1/1) ... [2022-11-20 21:27:53,356 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 21:27:53,357 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 21:27:53,357 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 21:27:53,357 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 21:27:53,358 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:53" (1/1) ... [2022-11-20 21:27:53,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 21:27:53,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e0a2992-8341-4611-86d9-748e3f318950/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:27:53,392 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e0a2992-8341-4611-86d9-748e3f318950/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 21:27:53,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e0a2992-8341-4611-86d9-748e3f318950/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 21:27:53,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 21:27:53,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 21:27:53,502 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 21:27:53,504 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 21:27:53,658 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 21:27:53,706 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 21:27:53,707 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 21:27:53,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:27:53 BoogieIcfgContainer [2022-11-20 21:27:53,710 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 21:27:53,712 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 21:27:53,712 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 21:27:53,716 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 21:27:53,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:27:53" (1/3) ... [2022-11-20 21:27:53,717 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12bb598b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:27:53, skipping insertion in model container [2022-11-20 21:27:53,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:27:53" (2/3) ... [2022-11-20 21:27:53,718 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12bb598b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:27:53, skipping insertion in model container [2022-11-20 21:27:53,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:27:53" (3/3) ... [2022-11-20 21:27:53,720 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.noninitstate.c [2022-11-20 21:27:53,748 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 21:27:53,748 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 21:27:53,799 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 21:27:53,807 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@38ba595e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 21:27:53,807 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 21:27:53,813 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 21:27:53,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-20 21:27:53,819 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:27:53,820 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-20 21:27:53,820 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:27:53,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:27:53,827 INFO L85 PathProgramCache]: Analyzing trace with hash 2065831, now seen corresponding path program 1 times [2022-11-20 21:27:53,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 21:27:53,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950479067] [2022-11-20 21:27:53,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:27:53,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 21:27:54,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 21:27:54,045 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 21:27:54,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 21:27:54,144 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-20 21:27:54,146 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 21:27:54,148 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-20 21:27:54,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 21:27:54,176 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-20 21:27:54,181 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 21:27:54,195 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-20 21:27:54,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 09:27:54 BoogieIcfgContainer [2022-11-20 21:27:54,201 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 21:27:54,202 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 21:27:54,202 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 21:27:54,203 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 21:27:54,203 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:27:53" (3/4) ... [2022-11-20 21:27:54,207 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-20 21:27:54,207 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 21:27:54,208 INFO L158 Benchmark]: Toolchain (without parser) took 1160.80ms. Allocated memory was 155.2MB in the beginning and 205.5MB in the end (delta: 50.3MB). Free memory was 111.7MB in the beginning and 174.4MB in the end (delta: -62.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 21:27:54,209 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 155.2MB. Free memory is still 99.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 21:27:54,209 INFO L158 Benchmark]: CACSL2BoogieTranslator took 239.95ms. Allocated memory is still 155.2MB. Free memory was 111.7MB in the beginning and 101.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 21:27:54,210 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.42ms. Allocated memory is still 155.2MB. Free memory was 101.2MB in the beginning and 99.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 21:27:54,211 INFO L158 Benchmark]: Boogie Preprocessor took 24.46ms. Allocated memory is still 155.2MB. Free memory was 99.2MB in the beginning and 97.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 21:27:54,211 INFO L158 Benchmark]: RCFGBuilder took 352.92ms. Allocated memory is still 155.2MB. Free memory was 97.9MB in the beginning and 82.4MB in the end (delta: 15.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-20 21:27:54,212 INFO L158 Benchmark]: TraceAbstraction took 489.42ms. Allocated memory was 155.2MB in the beginning and 205.5MB in the end (delta: 50.3MB). Free memory was 81.9MB in the beginning and 175.3MB in the end (delta: -93.3MB). Peak memory consumption was 22.4MB. Max. memory is 16.1GB. [2022-11-20 21:27:54,213 INFO L158 Benchmark]: Witness Printer took 4.94ms. Allocated memory is still 205.5MB. Free memory was 175.3MB in the beginning and 174.4MB in the end (delta: 829.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 21:27:54,216 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 155.2MB. Free memory is still 99.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 239.95ms. Allocated memory is still 155.2MB. Free memory was 111.7MB in the beginning and 101.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.42ms. Allocated memory is still 155.2MB. Free memory was 101.2MB in the beginning and 99.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.46ms. Allocated memory is still 155.2MB. Free memory was 99.2MB in the beginning and 97.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 352.92ms. Allocated memory is still 155.2MB. Free memory was 97.9MB in the beginning and 82.4MB in the end (delta: 15.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 489.42ms. Allocated memory was 155.2MB in the beginning and 205.5MB in the end (delta: 50.3MB). Free memory was 81.9MB in the beginning and 175.3MB in the end (delta: -93.3MB). Peak memory consumption was 22.4MB. Max. memory is 16.1GB. * Witness Printer took 4.94ms. Allocated memory is still 205.5MB. Free memory was 175.3MB in the beginning and 174.4MB in the end (delta: 829.5kB). Peak memory consumption was 2.1MB. 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: 21]: 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 49, overapproximation of bitwiseAnd at line 43. Possible FailurePath: [L26] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L27] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L29] const SORT_1 var_10 = 1; [L30] const SORT_1 var_13 = 0; [L32] SORT_1 input_2; [L34] SORT_1 state_3 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L35] SORT_1 state_4 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L36] SORT_1 state_11 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L38] SORT_1 init_12_arg_1 = var_10; [L39] state_11 = init_12_arg_1 VAL [init_12_arg_1=1, mask_SORT_1=1, msb_SORT_1=1, state_11=1, state_3=0, state_4=0, var_10=1, var_13=0] [L42] input_2 = __VERIFIER_nondet_uchar() [L43] input_2 = input_2 & mask_SORT_1 [L45] SORT_1 var_9_arg_0 = state_3; [L46] SORT_1 var_9_arg_1 = state_4; [L47] SORT_1 var_9 = var_9_arg_0 == var_9_arg_1; [L48] SORT_1 var_15_arg_0 = state_11; [L49] SORT_1 var_15_arg_1 = ~var_9; [L50] var_15_arg_1 = var_15_arg_1 & mask_SORT_1 [L51] SORT_1 var_15 = !var_15_arg_0 || var_15_arg_1; [L52] SORT_1 constr_16_arg_0 = var_15; [L53] CALL assume_abort_if_not(constr_16_arg_0) [L22] COND FALSE !(!cond) [L53] RET assume_abort_if_not(constr_16_arg_0) [L55] SORT_1 bad_17_arg_0 = var_9; [L56] CALL __VERIFIER_assert(!(bad_17_arg_0)) [L21] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L21] 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: 0.4s, 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, 0.1s 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 21:27:54,246 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e0a2992-8341-4611-86d9-748e3f318950/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 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_5e0a2992-8341-4611-86d9-748e3f318950/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e0a2992-8341-4611-86d9-748e3f318950/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_5e0a2992-8341-4611-86d9-748e3f318950/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e0a2992-8341-4611-86d9-748e3f318950/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.noninitstate.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e0a2992-8341-4611-86d9-748e3f318950/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_5e0a2992-8341-4611-86d9-748e3f318950/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 73e232604fc8babca2c5f057d102e5792a7cbb61e14baa729377b71bb6569c56 --- 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 21:27:57,061 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 21:27:57,064 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 21:27:57,089 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 21:27:57,089 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 21:27:57,091 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 21:27:57,093 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 21:27:57,095 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 21:27:57,098 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 21:27:57,099 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 21:27:57,101 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 21:27:57,102 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 21:27:57,103 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 21:27:57,105 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 21:27:57,106 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 21:27:57,108 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 21:27:57,109 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 21:27:57,110 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 21:27:57,113 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 21:27:57,115 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 21:27:57,117 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 21:27:57,119 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 21:27:57,120 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 21:27:57,122 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 21:27:57,126 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 21:27:57,127 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 21:27:57,127 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 21:27:57,129 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 21:27:57,130 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 21:27:57,131 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 21:27:57,132 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 21:27:57,133 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 21:27:57,134 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 21:27:57,135 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 21:27:57,149 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 21:27:57,149 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 21:27:57,150 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 21:27:57,151 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 21:27:57,151 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 21:27:57,152 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 21:27:57,153 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 21:27:57,162 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e0a2992-8341-4611-86d9-748e3f318950/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-20 21:27:57,213 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 21:27:57,218 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 21:27:57,218 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 21:27:57,221 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 21:27:57,221 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 21:27:57,222 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 21:27:57,222 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 21:27:57,222 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 21:27:57,224 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 21:27:57,224 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 21:27:57,224 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 21:27:57,225 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 21:27:57,225 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 21:27:57,227 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 21:27:57,227 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 21:27:57,227 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 21:27:57,227 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 21:27:57,228 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 21:27:57,228 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 21:27:57,228 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 21:27:57,228 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 21:27:57,229 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 21:27:57,229 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 21:27:57,229 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 21:27:57,229 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 21:27:57,230 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 21:27:57,230 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 21:27:57,230 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 21:27:57,230 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 21:27:57,231 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 21:27:57,231 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-20 21:27:57,231 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 21:27:57,231 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 21:27:57,232 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 21:27:57,232 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 21:27:57,232 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_5e0a2992-8341-4611-86d9-748e3f318950/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e0a2992-8341-4611-86d9-748e3f318950/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 73e232604fc8babca2c5f057d102e5792a7cbb61e14baa729377b71bb6569c56 [2022-11-20 21:27:57,661 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 21:27:57,699 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 21:27:57,702 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 21:27:57,704 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 21:27:57,704 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 21:27:57,706 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e0a2992-8341-4611-86d9-748e3f318950/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.noninitstate.c [2022-11-20 21:28:00,891 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 21:28:01,216 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 21:28:01,217 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e0a2992-8341-4611-86d9-748e3f318950/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.noninitstate.c [2022-11-20 21:28:01,225 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e0a2992-8341-4611-86d9-748e3f318950/bin/utaipan-6cKwYrpEi9/data/5feafa290/c6956a5667f64568bc564a5fcec00b93/FLAGb3a80c102 [2022-11-20 21:28:01,250 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e0a2992-8341-4611-86d9-748e3f318950/bin/utaipan-6cKwYrpEi9/data/5feafa290/c6956a5667f64568bc564a5fcec00b93 [2022-11-20 21:28:01,252 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 21:28:01,254 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 21:28:01,255 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 21:28:01,256 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 21:28:01,260 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 21:28:01,261 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:28:01" (1/1) ... [2022-11-20 21:28:01,262 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c0330e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:01, skipping insertion in model container [2022-11-20 21:28:01,262 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:28:01" (1/1) ... [2022-11-20 21:28:01,270 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 21:28:01,288 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 21:28:01,420 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_5e0a2992-8341-4611-86d9-748e3f318950/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.noninitstate.c[1117,1130] [2022-11-20 21:28:01,473 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 21:28:01,480 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 21:28:01,494 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_5e0a2992-8341-4611-86d9-748e3f318950/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.noninitstate.c[1117,1130] [2022-11-20 21:28:01,523 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 21:28:01,543 INFO L208 MainTranslator]: Completed translation [2022-11-20 21:28:01,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:01 WrapperNode [2022-11-20 21:28:01,544 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 21:28:01,546 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 21:28:01,546 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 21:28:01,546 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 21:28:01,555 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:01" (1/1) ... [2022-11-20 21:28:01,565 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:01" (1/1) ... [2022-11-20 21:28:01,605 INFO L138 Inliner]: procedures = 11, calls = 4, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 62 [2022-11-20 21:28:01,605 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 21:28:01,607 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 21:28:01,607 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 21:28:01,607 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 21:28:01,640 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:01" (1/1) ... [2022-11-20 21:28:01,641 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:01" (1/1) ... [2022-11-20 21:28:01,671 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:01" (1/1) ... [2022-11-20 21:28:01,672 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:01" (1/1) ... [2022-11-20 21:28:01,677 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:01" (1/1) ... [2022-11-20 21:28:01,690 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:01" (1/1) ... [2022-11-20 21:28:01,692 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:01" (1/1) ... [2022-11-20 21:28:01,693 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:01" (1/1) ... [2022-11-20 21:28:01,695 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 21:28:01,707 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 21:28:01,707 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 21:28:01,708 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 21:28:01,709 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:01" (1/1) ... [2022-11-20 21:28:01,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 21:28:01,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e0a2992-8341-4611-86d9-748e3f318950/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 21:28:01,762 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e0a2992-8341-4611-86d9-748e3f318950/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 21:28:01,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e0a2992-8341-4611-86d9-748e3f318950/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 21:28:01,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 21:28:01,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 21:28:01,924 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 21:28:01,926 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 21:28:02,182 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 21:28:02,190 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 21:28:02,190 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 21:28:02,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:28:02 BoogieIcfgContainer [2022-11-20 21:28:02,192 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 21:28:02,212 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 21:28:02,212 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 21:28:02,216 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 21:28:02,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:28:01" (1/3) ... [2022-11-20 21:28:02,217 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@345ea886 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:28:02, skipping insertion in model container [2022-11-20 21:28:02,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:01" (2/3) ... [2022-11-20 21:28:02,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@345ea886 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:28:02, skipping insertion in model container [2022-11-20 21:28:02,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:28:02" (3/3) ... [2022-11-20 21:28:02,220 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.noninitstate.c [2022-11-20 21:28:02,248 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 21:28:02,248 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 21:28:02,305 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 21:28:02,314 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;@c6b439b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 21:28:02,315 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 21:28:02,319 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 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 21:28:02,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-20 21:28:02,327 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:28:02,328 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:28:02,329 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:28:02,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:28:02,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1809708109, now seen corresponding path program 1 times [2022-11-20 21:28:02,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 21:28:02,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [539678018] [2022-11-20 21:28:02,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:28:02,357 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 21:28:02,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e0a2992-8341-4611-86d9-748e3f318950/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 21:28:02,366 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e0a2992-8341-4611-86d9-748e3f318950/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 21:28:02,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e0a2992-8341-4611-86d9-748e3f318950/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 21:28:02,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:28:02,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-20 21:28:02,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:28:02,499 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 21:28:02,499 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 21:28:02,500 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 21:28:02,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [539678018] [2022-11-20 21:28:02,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [539678018] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:28:02,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:28:02,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 21:28:02,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916894944] [2022-11-20 21:28:02,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:28:02,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 21:28:02,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 21:28:02,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 21:28:02,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 21:28:02,545 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 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 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 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 21:28:02,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:28:02,561 INFO L93 Difference]: Finished difference Result 20 states and 27 transitions. [2022-11-20 21:28:02,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 21:28:02,564 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2022-11-20 21:28:02,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:28:02,573 INFO L225 Difference]: With dead ends: 20 [2022-11-20 21:28:02,597 INFO L226 Difference]: Without dead ends: 9 [2022-11-20 21:28:02,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 21:28:02,604 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 21:28:02,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 21:28:02,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2022-11-20 21:28:02,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2022-11-20 21:28:02,637 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 21:28:02,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-20 21:28:02,639 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2022-11-20 21:28:02,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:28:02,640 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-20 21:28:02,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 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 21:28:02,640 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-20 21:28:02,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-20 21:28:02,641 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:28:02,641 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-20 21:28:02,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e0a2992-8341-4611-86d9-748e3f318950/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 21:28:02,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e0a2992-8341-4611-86d9-748e3f318950/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 21:28:02,859 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:28:02,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:28:02,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1809767691, now seen corresponding path program 1 times [2022-11-20 21:28:02,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 21:28:02,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1735248119] [2022-11-20 21:28:02,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:28:02,861 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 21:28:02,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e0a2992-8341-4611-86d9-748e3f318950/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 21:28:02,863 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e0a2992-8341-4611-86d9-748e3f318950/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 21:28:02,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e0a2992-8341-4611-86d9-748e3f318950/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 21:28:02,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 21:28:02,949 WARN L261 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 21:28:02,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 21:28:03,436 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 21:28:03,436 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 21:28:03,436 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 21:28:03,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1735248119] [2022-11-20 21:28:03,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1735248119] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 21:28:03,437 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 21:28:03,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 21:28:03,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534637183] [2022-11-20 21:28:03,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 21:28:03,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 21:28:03,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 21:28:03,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 21:28:03,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 21:28:03,440 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 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 21:28:03,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 21:28:03,736 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2022-11-20 21:28:03,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 21:28:03,737 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2022-11-20 21:28:03,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 21:28:03,738 INFO L225 Difference]: With dead ends: 19 [2022-11-20 21:28:03,738 INFO L226 Difference]: Without dead ends: 17 [2022-11-20 21:28:03,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-11-20 21:28:03,740 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 15 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 21:28:03,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 28 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 21:28:03,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-20 21:28:03,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 13. [2022-11-20 21:28:03,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 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 21:28:03,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2022-11-20 21:28:03,744 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 7 [2022-11-20 21:28:03,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 21:28:03,745 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2022-11-20 21:28:03,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 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 21:28:03,745 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2022-11-20 21:28:03,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-20 21:28:03,746 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 21:28:03,746 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-20 21:28:03,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e0a2992-8341-4611-86d9-748e3f318950/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)] Forceful destruction successful, exit code 0 [2022-11-20 21:28:03,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e0a2992-8341-4611-86d9-748e3f318950/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 21:28:03,962 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 21:28:03,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 21:28:03,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1841040349, now seen corresponding path program 1 times [2022-11-20 21:28:03,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 21:28:03,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1594687599] [2022-11-20 21:28:03,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 21:28:03,964 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 21:28:03,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e0a2992-8341-4611-86d9-748e3f318950/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 21:28:03,971 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e0a2992-8341-4611-86d9-748e3f318950/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 21:28:03,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e0a2992-8341-4611-86d9-748e3f318950/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 (4)] Waiting until timeout for monitored process [2022-11-20 21:28:04,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 21:28:04,045 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 21:28:04,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 21:28:04,121 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-11-20 21:28:04,122 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 21:28:04,124 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-20 21:28:04,146 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e0a2992-8341-4611-86d9-748e3f318950/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 (4)] Forceful destruction successful, exit code 0 [2022-11-20 21:28:04,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e0a2992-8341-4611-86d9-748e3f318950/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 21:28:04,344 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-20 21:28:04,348 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 21:28:04,368 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-20 21:28:04,369 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-20 21:28:04,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 09:28:04 BoogieIcfgContainer [2022-11-20 21:28:04,377 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 21:28:04,378 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 21:28:04,378 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 21:28:04,378 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 21:28:04,379 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:28:02" (3/4) ... [2022-11-20 21:28:04,381 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-20 21:28:04,388 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-20 21:28:04,388 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-20 21:28:04,437 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e0a2992-8341-4611-86d9-748e3f318950/bin/utaipan-6cKwYrpEi9/witness.graphml [2022-11-20 21:28:04,438 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 21:28:04,439 INFO L158 Benchmark]: Toolchain (without parser) took 3184.78ms. Allocated memory was 69.2MB in the beginning and 90.2MB in the end (delta: 21.0MB). Free memory was 47.1MB in the beginning and 45.8MB in the end (delta: 1.2MB). Peak memory consumption was 25.7MB. Max. memory is 16.1GB. [2022-11-20 21:28:04,439 INFO L158 Benchmark]: CDTParser took 0.79ms. Allocated memory is still 69.2MB. Free memory was 47.0MB in the beginning and 46.9MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 21:28:04,440 INFO L158 Benchmark]: CACSL2BoogieTranslator took 288.72ms. Allocated memory is still 69.2MB. Free memory was 46.9MB in the beginning and 36.3MB in the end (delta: 10.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-20 21:28:04,440 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.66ms. Allocated memory is still 69.2MB. Free memory was 36.3MB in the beginning and 34.7MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 21:28:04,441 INFO L158 Benchmark]: Boogie Preprocessor took 99.18ms. Allocated memory was 69.2MB in the beginning and 90.2MB in the end (delta: 21.0MB). Free memory was 34.7MB in the beginning and 70.1MB in the end (delta: -35.4MB). Peak memory consumption was 5.1MB. Max. memory is 16.1GB. [2022-11-20 21:28:04,441 INFO L158 Benchmark]: RCFGBuilder took 501.63ms. Allocated memory is still 90.2MB. Free memory was 70.1MB in the beginning and 58.9MB in the end (delta: 11.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-20 21:28:04,442 INFO L158 Benchmark]: TraceAbstraction took 2165.44ms. Allocated memory is still 90.2MB. Free memory was 58.3MB in the beginning and 48.9MB in the end (delta: 9.3MB). Peak memory consumption was 10.2MB. Max. memory is 16.1GB. [2022-11-20 21:28:04,443 INFO L158 Benchmark]: Witness Printer took 60.04ms. Allocated memory is still 90.2MB. Free memory was 48.9MB in the beginning and 45.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-20 21:28:04,445 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.79ms. Allocated memory is still 69.2MB. Free memory was 47.0MB in the beginning and 46.9MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 288.72ms. Allocated memory is still 69.2MB. Free memory was 46.9MB in the beginning and 36.3MB in the end (delta: 10.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 59.66ms. Allocated memory is still 69.2MB. Free memory was 36.3MB in the beginning and 34.7MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 99.18ms. Allocated memory was 69.2MB in the beginning and 90.2MB in the end (delta: 21.0MB). Free memory was 34.7MB in the beginning and 70.1MB in the end (delta: -35.4MB). Peak memory consumption was 5.1MB. Max. memory is 16.1GB. * RCFGBuilder took 501.63ms. Allocated memory is still 90.2MB. Free memory was 70.1MB in the beginning and 58.9MB in the end (delta: 11.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 2165.44ms. Allocated memory is still 90.2MB. Free memory was 58.3MB in the beginning and 48.9MB in the end (delta: 9.3MB). Peak memory consumption was 10.2MB. Max. memory is 16.1GB. * Witness Printer took 60.04ms. Allocated memory is still 90.2MB. Free memory was 48.9MB in the beginning and 45.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. 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 - CounterExampleResult [Line: 21]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L26] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L27] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L29] const SORT_1 var_10 = 1; [L30] const SORT_1 var_13 = 0; [L32] SORT_1 input_2; [L34] SORT_1 state_3 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L35] SORT_1 state_4 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L36] SORT_1 state_11 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L38] SORT_1 init_12_arg_1 = var_10; [L39] state_11 = init_12_arg_1 VAL [init_12_arg_1=1, mask_SORT_1=1, msb_SORT_1=1, state_11=1, state_3=0, state_4=1, var_10=1, var_13=0] [L42] input_2 = __VERIFIER_nondet_uchar() [L43] input_2 = input_2 & mask_SORT_1 [L45] SORT_1 var_9_arg_0 = state_3; [L46] SORT_1 var_9_arg_1 = state_4; [L47] SORT_1 var_9 = var_9_arg_0 == var_9_arg_1; [L48] SORT_1 var_15_arg_0 = state_11; [L49] SORT_1 var_15_arg_1 = ~var_9; [L50] var_15_arg_1 = var_15_arg_1 & mask_SORT_1 [L51] SORT_1 var_15 = !var_15_arg_0 || var_15_arg_1; [L52] SORT_1 constr_16_arg_0 = var_15; [L53] CALL assume_abort_if_not(constr_16_arg_0) [L22] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L53] RET assume_abort_if_not(constr_16_arg_0) [L55] SORT_1 bad_17_arg_0 = var_9; [L56] CALL __VERIFIER_assert(!(bad_17_arg_0)) [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L56] RET __VERIFIER_assert(!(bad_17_arg_0)) [L58] SORT_1 var_5_arg_0 = ~input_2; [L59] var_5_arg_0 = var_5_arg_0 & mask_SORT_1 [L60] SORT_1 var_5_arg_1 = ~state_3; [L61] var_5_arg_1 = var_5_arg_1 & mask_SORT_1 [L62] SORT_1 var_5_arg_2 = state_3; [L63] SORT_1 var_5 = var_5_arg_0 ? var_5_arg_1 : var_5_arg_2; [L64] var_5 = var_5 & mask_SORT_1 [L65] SORT_1 next_7_arg_1 = var_5; [L66] SORT_1 var_6_arg_0 = input_2; [L67] SORT_1 var_6_arg_1 = ~state_4; [L68] var_6_arg_1 = var_6_arg_1 & mask_SORT_1 [L69] SORT_1 var_6_arg_2 = state_4; [L70] SORT_1 var_6 = var_6_arg_0 ? var_6_arg_1 : var_6_arg_2; [L71] var_6 = var_6 & mask_SORT_1 [L72] SORT_1 next_8_arg_1 = var_6; [L73] SORT_1 next_14_arg_1 = var_13; [L75] state_3 = next_7_arg_1 [L76] state_4 = next_8_arg_1 [L77] state_11 = next_14_arg_1 VAL [bad_17_arg_0=0, constr_16_arg_0=1, init_12_arg_1=1, input_2=0, mask_SORT_1=1, msb_SORT_1=1, next_14_arg_1=0, next_7_arg_1=1, next_8_arg_1=1, state_11=0, state_3=1, state_4=1, var_10=1, var_13=0, var_15=1, var_15_arg_0=1, var_15_arg_1=1, var_5=1, var_5_arg_0=1, var_5_arg_1=1, var_5_arg_2=0, var_6=1, var_6_arg_0=0, var_6_arg_1=0, var_6_arg_2=1, var_9=0, var_9_arg_0=0, var_9_arg_1=1] [L42] input_2 = __VERIFIER_nondet_uchar() [L43] input_2 = input_2 & mask_SORT_1 [L45] SORT_1 var_9_arg_0 = state_3; [L46] SORT_1 var_9_arg_1 = state_4; [L47] SORT_1 var_9 = var_9_arg_0 == var_9_arg_1; [L48] SORT_1 var_15_arg_0 = state_11; [L49] SORT_1 var_15_arg_1 = ~var_9; [L50] var_15_arg_1 = var_15_arg_1 & mask_SORT_1 [L51] SORT_1 var_15 = !var_15_arg_0 || var_15_arg_1; [L52] SORT_1 constr_16_arg_0 = var_15; [L53] CALL assume_abort_if_not(constr_16_arg_0) [L22] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L53] RET assume_abort_if_not(constr_16_arg_0) [L55] SORT_1 bad_17_arg_0 = var_9; [L56] CALL __VERIFIER_assert(!(bad_17_arg_0)) [L21] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L21] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.1s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 15 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 15 mSDsluCounter, 37 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 21 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 20 IncrementalHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 16 mSDtfsCounter, 20 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, InterpolantAutomatonStates: 10, 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, 2 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 59 SizeOfPredicates, 15 NumberOfNonLiveVariables, 54 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 proved your program to be incorrect! [2022-11-20 21:28:04,477 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e0a2992-8341-4611-86d9-748e3f318950/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 Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE