./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.v_FIFO.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 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_42dec5e3-b6ff-4b43-a9ff-ee2c231b38ea/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dec5e3-b6ff-4b43-a9ff-ee2c231b38ea/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dec5e3-b6ff-4b43-a9ff-ee2c231b38ea/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dec5e3-b6ff-4b43-a9ff-ee2c231b38ea/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.v_FIFO.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dec5e3-b6ff-4b43-a9ff-ee2c231b38ea/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dec5e3-b6ff-4b43-a9ff-ee2c231b38ea/bin/utaipan-Q6hlc19bkW --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 c16eea741307fcf998a7d8c15fea1df6c992fe7672606bd6ee824e0bc4e8768f --- 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-4e7fbc6 [2022-11-23 14:06:19,243 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:06:19,245 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:06:19,270 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:06:19,271 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:06:19,274 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:06:19,278 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:06:19,280 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:06:19,282 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:06:19,288 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:06:19,290 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:06:19,293 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:06:19,293 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:06:19,298 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:06:19,300 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:06:19,301 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:06:19,302 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:06:19,303 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:06:19,304 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:06:19,306 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:06:19,307 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:06:19,309 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:06:19,310 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:06:19,311 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:06:19,314 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:06:19,314 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:06:19,315 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:06:19,316 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:06:19,316 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:06:19,317 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:06:19,318 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:06:19,319 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:06:19,320 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:06:19,321 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:06:19,322 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:06:19,322 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:06:19,323 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:06:19,323 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:06:19,324 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:06:19,325 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:06:19,326 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:06:19,327 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dec5e3-b6ff-4b43-a9ff-ee2c231b38ea/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-23 14:06:19,358 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:06:19,358 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:06:19,358 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:06:19,358 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:06:19,359 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:06:19,359 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:06:19,359 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:06:19,360 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:06:19,360 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:06:19,360 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 14:06:19,360 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:06:19,360 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:06:19,361 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 14:06:19,361 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 14:06:19,361 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:06:19,361 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 14:06:19,361 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 14:06:19,362 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 14:06:19,362 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:06:19,362 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 14:06:19,363 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:06:19,363 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 14:06:19,363 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:06:19,363 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 14:06:19,363 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 14:06:19,364 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:06:19,364 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 14:06:19,364 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:06:19,364 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:06:19,364 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:06:19,365 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:06:19,365 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 14:06:19,365 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:06:19,365 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 14:06:19,365 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 14:06:19,365 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 14:06:19,366 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 14:06:19,366 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:06:19,370 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_42dec5e3-b6ff-4b43-a9ff-ee2c231b38ea/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dec5e3-b6ff-4b43-a9ff-ee2c231b38ea/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c16eea741307fcf998a7d8c15fea1df6c992fe7672606bd6ee824e0bc4e8768f [2022-11-23 14:06:19,610 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:06:19,642 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:06:19,644 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:06:19,646 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:06:19,647 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:06:19,649 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dec5e3-b6ff-4b43-a9ff-ee2c231b38ea/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.v_FIFO.c [2022-11-23 14:06:22,837 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:06:23,156 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:06:23,163 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dec5e3-b6ff-4b43-a9ff-ee2c231b38ea/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.v_FIFO.c [2022-11-23 14:06:23,178 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dec5e3-b6ff-4b43-a9ff-ee2c231b38ea/bin/utaipan-Q6hlc19bkW/data/9129c5859/822546bda39c4aaaa4f8c004d9459eed/FLAG454a6ec22 [2022-11-23 14:06:23,200 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dec5e3-b6ff-4b43-a9ff-ee2c231b38ea/bin/utaipan-Q6hlc19bkW/data/9129c5859/822546bda39c4aaaa4f8c004d9459eed [2022-11-23 14:06:23,206 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:06:23,208 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:06:23,214 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:06:23,215 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:06:23,222 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:06:23,223 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:06:23" (1/1) ... [2022-11-23 14:06:23,224 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@104094a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:23, skipping insertion in model container [2022-11-23 14:06:23,224 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:06:23" (1/1) ... [2022-11-23 14:06:23,232 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:06:23,283 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:06:23,452 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_42dec5e3-b6ff-4b43-a9ff-ee2c231b38ea/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.v_FIFO.c[1107,1120] [2022-11-23 14:06:23,660 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:06:23,666 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 14:06:23,678 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_42dec5e3-b6ff-4b43-a9ff-ee2c231b38ea/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.v_FIFO.c[1107,1120] [2022-11-23 14:06:23,788 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:06:23,802 INFO L208 MainTranslator]: Completed translation [2022-11-23 14:06:23,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:23 WrapperNode [2022-11-23 14:06:23,803 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:06:23,804 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 14:06:23,804 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 14:06:23,804 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 14:06:23,813 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:23" (1/1) ... [2022-11-23 14:06:23,843 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:23" (1/1) ... [2022-11-23 14:06:23,947 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 836 [2022-11-23 14:06:23,947 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 14:06:23,948 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 14:06:23,948 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 14:06:23,948 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 14:06:23,958 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:23" (1/1) ... [2022-11-23 14:06:23,958 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:23" (1/1) ... [2022-11-23 14:06:23,977 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:23" (1/1) ... [2022-11-23 14:06:23,991 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:23" (1/1) ... [2022-11-23 14:06:24,040 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:23" (1/1) ... [2022-11-23 14:06:24,044 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:23" (1/1) ... [2022-11-23 14:06:24,053 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:23" (1/1) ... [2022-11-23 14:06:24,058 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:23" (1/1) ... [2022-11-23 14:06:24,083 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 14:06:24,084 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 14:06:24,084 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 14:06:24,085 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 14:06:24,086 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:23" (1/1) ... [2022-11-23 14:06:24,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:06:24,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dec5e3-b6ff-4b43-a9ff-ee2c231b38ea/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:06:24,125 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dec5e3-b6ff-4b43-a9ff-ee2c231b38ea/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 14:06:24,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dec5e3-b6ff-4b43-a9ff-ee2c231b38ea/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 14:06:24,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 14:06:24,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 14:06:24,447 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 14:06:24,450 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 14:06:35,322 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 14:06:35,345 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 14:06:35,345 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 14:06:35,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:06:35 BoogieIcfgContainer [2022-11-23 14:06:35,348 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 14:06:35,350 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 14:06:35,351 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 14:06:35,354 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 14:06:35,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:06:23" (1/3) ... [2022-11-23 14:06:35,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@425ae3a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:06:35, skipping insertion in model container [2022-11-23 14:06:35,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:23" (2/3) ... [2022-11-23 14:06:35,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@425ae3a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:06:35, skipping insertion in model container [2022-11-23 14:06:35,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:06:35" (3/3) ... [2022-11-23 14:06:35,363 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.v_FIFO.c [2022-11-23 14:06:35,384 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 14:06:35,385 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 14:06:35,448 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:06:35,459 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;@51f5db5e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:06:35,459 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 14:06:35,463 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) [2022-11-23 14:06:35,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-23 14:06:35,479 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:06:35,480 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-23 14:06:35,481 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:06:35,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:06:35,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1797488, now seen corresponding path program 1 times [2022-11-23 14:06:35,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:06:35,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502603184] [2022-11-23 14:06:35,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:06:35,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:06:36,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 14:06:36,485 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 14:06:37,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 14:06:37,289 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-23 14:06:37,291 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 14:06:37,292 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-23 14:06:37,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 14:06:37,300 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-23 14:06:37,304 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 14:06:37,350 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-23 14:06:37,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:06:37 BoogieIcfgContainer [2022-11-23 14:06:37,374 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 14:06:37,375 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 14:06:37,376 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 14:06:37,376 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 14:06:37,378 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:06:35" (3/4) ... [2022-11-23 14:06:37,382 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-23 14:06:37,382 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 14:06:37,385 INFO L158 Benchmark]: Toolchain (without parser) took 14176.42ms. Allocated memory was 165.7MB in the beginning and 325.1MB in the end (delta: 159.4MB). Free memory was 135.7MB in the beginning and 112.3MB in the end (delta: 23.4MB). Peak memory consumption was 185.7MB. Max. memory is 16.1GB. [2022-11-23 14:06:37,385 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 121.6MB. Free memory is still 75.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 14:06:37,386 INFO L158 Benchmark]: CACSL2BoogieTranslator took 589.08ms. Allocated memory is still 165.7MB. Free memory was 135.7MB in the beginning and 104.5MB in the end (delta: 31.2MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2022-11-23 14:06:37,388 INFO L158 Benchmark]: Boogie Procedure Inliner took 143.29ms. Allocated memory is still 165.7MB. Free memory was 104.5MB in the beginning and 96.1MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-23 14:06:37,389 INFO L158 Benchmark]: Boogie Preprocessor took 135.75ms. Allocated memory is still 165.7MB. Free memory was 96.1MB in the beginning and 91.5MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-23 14:06:37,394 INFO L158 Benchmark]: RCFGBuilder took 11263.88ms. Allocated memory was 165.7MB in the beginning and 325.1MB in the end (delta: 159.4MB). Free memory was 91.5MB in the beginning and 124.6MB in the end (delta: -33.1MB). Peak memory consumption was 168.0MB. Max. memory is 16.1GB. [2022-11-23 14:06:37,396 INFO L158 Benchmark]: TraceAbstraction took 2023.36ms. Allocated memory is still 325.1MB. Free memory was 124.6MB in the beginning and 112.3MB in the end (delta: 12.3MB). Peak memory consumption was 12.3MB. Max. memory is 16.1GB. [2022-11-23 14:06:37,396 INFO L158 Benchmark]: Witness Printer took 7.90ms. Allocated memory is still 325.1MB. Free memory is still 112.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 14:06:37,404 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 121.6MB. Free memory is still 75.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 589.08ms. Allocated memory is still 165.7MB. Free memory was 135.7MB in the beginning and 104.5MB in the end (delta: 31.2MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 143.29ms. Allocated memory is still 165.7MB. Free memory was 104.5MB in the beginning and 96.1MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 135.75ms. Allocated memory is still 165.7MB. Free memory was 96.1MB in the beginning and 91.5MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 11263.88ms. Allocated memory was 165.7MB in the beginning and 325.1MB in the end (delta: 159.4MB). Free memory was 91.5MB in the beginning and 124.6MB in the end (delta: -33.1MB). Peak memory consumption was 168.0MB. Max. memory is 16.1GB. * TraceAbstraction took 2023.36ms. Allocated memory is still 325.1MB. Free memory was 124.6MB in the beginning and 112.3MB in the end (delta: 12.3MB). Peak memory consumption was 12.3MB. Max. memory is 16.1GB. * Witness Printer took 7.90ms. Allocated memory is still 325.1MB. Free memory is still 112.3MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseComplement at line 155, overapproximation of bitwiseOr at line 180, overapproximation of bitwiseAnd at line 146. Possible FailurePath: [L25] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 4); [L26] const SORT_1 msb_SORT_1 = (SORT_1)1 << (4 - 1); [L28] const SORT_5 mask_SORT_5 = (SORT_5)-1 >> (sizeof(SORT_5) * 8 - 1); [L29] const SORT_5 msb_SORT_5 = (SORT_5)1 << (1 - 1); [L31] const SORT_13 mask_SORT_13 = (SORT_13)-1 >> (sizeof(SORT_13) * 8 - 32); [L32] const SORT_13 msb_SORT_13 = (SORT_13)1 << (32 - 1); [L34] const SORT_36 mask_SORT_36 = (SORT_36)-1 >> (sizeof(SORT_36) * 8 - 3); [L35] const SORT_36 msb_SORT_36 = (SORT_36)1 << (3 - 1); [L37] const SORT_206 mask_SORT_206 = (SORT_206)-1 >> (sizeof(SORT_206) * 8 - 2); [L38] const SORT_206 msb_SORT_206 = (SORT_206)1 << (2 - 1); [L40] const SORT_1 var_10 = 0; [L41] const SORT_13 var_15 = 4; [L42] const SORT_5 var_22 = 1; [L43] const SORT_36 var_38 = 1; [L44] const SORT_36 var_43 = 2; [L45] const SORT_36 var_50 = 4; [L46] const SORT_36 var_53 = 3; [L47] const SORT_13 var_81 = 1; [L48] const SORT_13 var_101 = 0; [L49] const SORT_5 var_149 = 0; [L50] const SORT_1 var_186 = 15; [L52] SORT_1 input_2; [L53] SORT_1 input_3; [L54] SORT_1 input_4; [L55] SORT_5 input_6; [L56] SORT_1 input_7; [L57] SORT_5 input_8; [L58] SORT_5 input_9; [L59] SORT_13 input_94; [L60] SORT_1 input_96; [L61] SORT_1 input_107; [L62] SORT_1 input_112; [L63] SORT_1 input_114; [L64] SORT_1 input_129; [L65] SORT_5 input_140; [L66] SORT_5 input_144; [L67] SORT_5 input_147; [L68] SORT_5 input_152; [L69] SORT_5 input_155; [L70] SORT_5 input_158; [L71] SORT_1 input_173; [L72] SORT_1 input_176; [L74] SORT_1 state_11 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L75] SORT_1 state_17 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L76] SORT_1 state_19 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L77] SORT_5 state_23 = __VERIFIER_nondet_uchar() & mask_SORT_5; [L78] SORT_5 state_28 = __VERIFIER_nondet_uchar() & mask_SORT_5; [L79] SORT_1 state_32 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L80] SORT_1 state_34 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L81] SORT_1 state_41 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L82] SORT_1 state_46 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L83] SORT_1 state_48 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L84] SORT_1 state_57 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L85] SORT_1 state_59 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L86] SORT_1 state_63 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L87] SORT_1 state_65 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L88] SORT_1 state_70 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L90] SORT_1 init_12_arg_1 = var_10; [L91] state_11 = init_12_arg_1 [L92] SORT_1 init_18_arg_1 = var_10; [L93] state_17 = init_18_arg_1 [L94] SORT_1 init_20_arg_1 = var_10; [L95] state_19 = init_20_arg_1 [L96] SORT_5 init_24_arg_1 = var_22; [L97] state_23 = init_24_arg_1 [L98] SORT_5 init_29_arg_1 = var_22; [L99] state_28 = init_29_arg_1 [L100] SORT_1 init_33_arg_1 = var_10; [L101] state_32 = init_33_arg_1 [L102] SORT_1 init_35_arg_1 = var_10; [L103] state_34 = init_35_arg_1 [L104] SORT_1 init_42_arg_1 = var_10; [L105] state_41 = init_42_arg_1 [L106] SORT_1 init_47_arg_1 = var_10; [L107] state_46 = init_47_arg_1 [L108] SORT_1 init_49_arg_1 = var_10; [L109] state_48 = init_49_arg_1 [L110] SORT_1 init_58_arg_1 = var_10; [L111] state_57 = init_58_arg_1 [L112] SORT_1 init_60_arg_1 = var_10; [L113] state_59 = init_60_arg_1 [L114] SORT_1 init_64_arg_1 = var_10; [L115] state_63 = init_64_arg_1 [L116] SORT_1 init_66_arg_1 = var_10; [L117] state_65 = init_66_arg_1 [L118] SORT_1 init_71_arg_1 = var_10; [L119] state_70 = init_71_arg_1 VAL [init_12_arg_1=0, init_18_arg_1=0, init_20_arg_1=0, init_24_arg_1=1, init_29_arg_1=1, init_33_arg_1=0, init_35_arg_1=0, init_42_arg_1=0, init_47_arg_1=0, init_49_arg_1=0, init_58_arg_1=0, init_60_arg_1=0, init_64_arg_1=0, init_66_arg_1=0, init_71_arg_1=0, mask_SORT_1=15, mask_SORT_13=4294967295, mask_SORT_206=3, mask_SORT_36=7, mask_SORT_5=1, msb_SORT_1=8, msb_SORT_13=2147483648, msb_SORT_206=2, msb_SORT_36=4, msb_SORT_5=1, state_11=0, state_17=0, state_19=0, state_23=1, state_28=1, state_32=0, state_34=0, state_41=0, state_46=0, state_48=0, state_57=0, state_59=0, state_63=0, state_65=0, state_70=0, var_10=0, var_101=0, var_149=0, var_15=4, var_186=15, var_22=1, var_38=1, var_43=2, var_50=4, var_53=3, var_81=1] [L122] input_2 = __VERIFIER_nondet_uchar() [L123] input_3 = __VERIFIER_nondet_uchar() [L124] input_4 = __VERIFIER_nondet_uchar() [L125] input_6 = __VERIFIER_nondet_uchar() [L126] input_7 = __VERIFIER_nondet_uchar() [L127] input_8 = __VERIFIER_nondet_uchar() [L128] input_9 = __VERIFIER_nondet_uchar() [L129] input_94 = __VERIFIER_nondet_uint() [L130] input_96 = __VERIFIER_nondet_uchar() [L131] input_107 = __VERIFIER_nondet_uchar() [L132] input_112 = __VERIFIER_nondet_uchar() [L133] input_114 = __VERIFIER_nondet_uchar() [L134] input_129 = __VERIFIER_nondet_uchar() [L135] input_140 = __VERIFIER_nondet_uchar() [L136] input_144 = __VERIFIER_nondet_uchar() [L137] input_147 = __VERIFIER_nondet_uchar() [L138] input_152 = __VERIFIER_nondet_uchar() [L139] input_155 = __VERIFIER_nondet_uchar() [L140] input_158 = __VERIFIER_nondet_uchar() [L141] input_173 = __VERIFIER_nondet_uchar() [L142] input_176 = __VERIFIER_nondet_uchar() [L145] SORT_1 var_14_arg_0 = state_11; [L146] var_14_arg_0 = var_14_arg_0 & mask_SORT_1 [L147] SORT_13 var_14 = var_14_arg_0; [L148] SORT_13 var_16_arg_0 = var_14; [L149] SORT_13 var_16_arg_1 = var_15; [L150] SORT_5 var_16 = var_16_arg_0 == var_16_arg_1; [L151] SORT_1 var_21_arg_0 = state_17; [L152] SORT_1 var_21_arg_1 = state_19; [L153] SORT_5 var_21 = var_21_arg_0 == var_21_arg_1; [L154] SORT_5 var_25_arg_0 = state_23; [L155] SORT_5 var_25 = ~var_25_arg_0; [L156] SORT_5 var_26_arg_0 = var_21; [L157] SORT_5 var_26_arg_1 = var_25; [L158] SORT_5 var_26 = var_26_arg_0 & var_26_arg_1; [L159] var_26 = var_26 & mask_SORT_5 [L160] SORT_5 var_27_arg_0 = var_16; [L161] SORT_5 var_27_arg_1 = var_26; [L162] SORT_5 var_27 = var_27_arg_0 == var_27_arg_1; [L163] SORT_5 var_30_arg_0 = state_28; [L164] SORT_5 var_30_arg_1 = state_23; [L165] SORT_5 var_30 = var_30_arg_0 == var_30_arg_1; [L166] SORT_5 var_31_arg_0 = var_27; [L167] SORT_5 var_31_arg_1 = var_30; [L168] SORT_5 var_31 = var_31_arg_0 & var_31_arg_1; [L169] SORT_1 var_37_arg_0 = state_11; [L170] SORT_36 var_37 = var_37_arg_0 >> 0; [L171] var_37 = var_37 & mask_SORT_36 [L172] SORT_36 var_54_arg_0 = var_37; [L173] SORT_36 var_54_arg_1 = var_53; [L174] SORT_5 var_54 = var_54_arg_0 == var_54_arg_1; [L175] SORT_36 var_51_arg_0 = var_37; [L176] SORT_36 var_51_arg_1 = var_50; [L177] SORT_5 var_51 = var_51_arg_0 == var_51_arg_1; [L178] SORT_5 var_55_arg_0 = var_54; [L179] SORT_5 var_55_arg_1 = var_51; [L180] SORT_5 var_55 = var_55_arg_0 | var_55_arg_1; [L181] var_55 = var_55 & mask_SORT_5 [L182] SORT_5 var_52_arg_0 = var_51; [L183] SORT_1 var_52_arg_1 = state_48; [L184] SORT_1 var_52_arg_2 = state_46; [L185] SORT_1 var_52 = var_52_arg_0 ? var_52_arg_1 : var_52_arg_2; [L186] SORT_36 var_44_arg_0 = var_37; [L187] SORT_36 var_44_arg_1 = var_43; [L188] SORT_5 var_44 = var_44_arg_0 == var_44_arg_1; [L189] SORT_36 var_39_arg_0 = var_37; [L190] SORT_36 var_39_arg_1 = var_38; [L191] SORT_5 var_39 = var_39_arg_0 == var_39_arg_1; [L192] SORT_5 var_40_arg_0 = var_39; [L193] SORT_1 var_40_arg_1 = state_34; [L194] SORT_1 var_40_arg_2 = state_32; [L195] SORT_1 var_40 = var_40_arg_0 ? var_40_arg_1 : var_40_arg_2; [L196] SORT_5 var_45_arg_0 = var_44; [L197] SORT_1 var_45_arg_1 = state_41; [L198] SORT_1 var_45_arg_2 = var_40; [L199] SORT_1 var_45 = var_45_arg_0 ? var_45_arg_1 : var_45_arg_2; [L200] SORT_5 var_56_arg_0 = var_55; [L201] SORT_1 var_56_arg_1 = var_52; [L202] SORT_1 var_56_arg_2 = var_45; [L203] SORT_1 var_56 = var_56_arg_0 ? var_56_arg_1 : var_56_arg_2; [L204] var_56 = var_56 & mask_SORT_1 [L205] SORT_1 var_75_arg_0 = state_17; [L206] SORT_5 var_75 = var_75_arg_0 >> 2; [L207] var_75 = var_75 & mask_SORT_5 [L208] SORT_1 var_68_arg_0 = state_17; [L209] SORT_5 var_68 = var_68_arg_0 >> 1; [L210] var_68 = var_68 & mask_SORT_5 [L211] SORT_1 var_61_arg_0 = state_17; [L212] SORT_5 var_61 = var_61_arg_0 >> 0; [L213] var_61 = var_61 & mask_SORT_5 [L214] SORT_5 var_73_arg_0 = var_61; [L215] SORT_1 var_73_arg_1 = input_4; [L216] SORT_1 var_73_arg_2 = input_3; [L217] SORT_1 var_73 = var_73_arg_0 ? var_73_arg_1 : var_73_arg_2; [L218] SORT_5 var_72_arg_0 = var_61; [L219] SORT_1 var_72_arg_1 = input_2; [L220] SORT_1 var_72_arg_2 = state_70; [L221] SORT_1 var_72 = var_72_arg_0 ? var_72_arg_1 : var_72_arg_2; [L222] SORT_5 var_74_arg_0 = var_68; [L223] SORT_1 var_74_arg_1 = var_73; [L224] SORT_1 var_74_arg_2 = var_72; [L225] SORT_1 var_74 = var_74_arg_0 ? var_74_arg_1 : var_74_arg_2; [L226] SORT_5 var_67_arg_0 = var_61; [L227] SORT_1 var_67_arg_1 = state_65; [L228] SORT_1 var_67_arg_2 = state_63; [L229] SORT_1 var_67 = var_67_arg_0 ? var_67_arg_1 : var_67_arg_2; [L230] SORT_5 var_62_arg_0 = var_61; [L231] SORT_1 var_62_arg_1 = state_59; [L232] SORT_1 var_62_arg_2 = state_57; [L233] SORT_1 var_62 = var_62_arg_0 ? var_62_arg_1 : var_62_arg_2; [L234] SORT_5 var_69_arg_0 = var_68; [L235] SORT_1 var_69_arg_1 = var_67; [L236] SORT_1 var_69_arg_2 = var_62; [L237] SORT_1 var_69 = var_69_arg_0 ? var_69_arg_1 : var_69_arg_2; [L238] SORT_5 var_76_arg_0 = var_75; [L239] SORT_1 var_76_arg_1 = var_74; [L240] SORT_1 var_76_arg_2 = var_69; [L241] SORT_1 var_76 = var_76_arg_0 ? var_76_arg_1 : var_76_arg_2; [L242] var_76 = var_76 & mask_SORT_1 [L243] SORT_1 var_77_arg_0 = var_56; [L244] SORT_1 var_77_arg_1 = var_76; [L245] SORT_5 var_77 = var_77_arg_0 == var_77_arg_1; [L246] SORT_5 var_78_arg_0 = state_28; [L247] SORT_5 var_78_arg_1 = var_77; [L248] SORT_5 var_78 = var_78_arg_0 | var_78_arg_1; [L249] SORT_5 var_79_arg_0 = var_31; [L250] SORT_5 var_79_arg_1 = var_78; [L251] SORT_5 var_79 = var_79_arg_0 & var_79_arg_1; [L252] SORT_5 var_80_arg_0 = var_79; [L253] var_80_arg_0 = var_80_arg_0 & mask_SORT_5 [L254] SORT_13 var_80 = var_80_arg_0; [L255] SORT_13 var_82_arg_0 = var_80; [L256] SORT_13 var_82_arg_1 = var_81; [L257] SORT_5 var_82 = var_82_arg_0 == var_82_arg_1; [L258] SORT_5 var_85_arg_0 = var_82; [L259] SORT_5 var_85 = ~var_85_arg_0; [L260] SORT_5 var_86_arg_0 = var_22; [L261] SORT_5 var_86_arg_1 = var_85; [L262] SORT_5 var_86 = var_86_arg_0 & var_86_arg_1; [L263] var_86 = var_86 & mask_SORT_5 [L264] SORT_5 bad_87_arg_0 = var_86; [L265] CALL __VERIFIER_assert(!(bad_87_arg_0)) [L20] COND TRUE !(cond) VAL [cond=0, unknown-#in~cond-unknown=0] [L20] reach_error() VAL [cond=0, unknown-#in~cond-unknown=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.9s, 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, 0.9s 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 [2022-11-23 14:06:37,441 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dec5e3-b6ff-4b43-a9ff-ee2c231b38ea/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dec5e3-b6ff-4b43-a9ff-ee2c231b38ea/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dec5e3-b6ff-4b43-a9ff-ee2c231b38ea/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dec5e3-b6ff-4b43-a9ff-ee2c231b38ea/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dec5e3-b6ff-4b43-a9ff-ee2c231b38ea/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.v_FIFO.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dec5e3-b6ff-4b43-a9ff-ee2c231b38ea/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dec5e3-b6ff-4b43-a9ff-ee2c231b38ea/bin/utaipan-Q6hlc19bkW --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 c16eea741307fcf998a7d8c15fea1df6c992fe7672606bd6ee824e0bc4e8768f --- 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-4e7fbc6 [2022-11-23 14:06:40,040 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:06:40,042 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:06:40,083 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:06:40,083 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:06:40,087 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:06:40,090 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:06:40,093 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:06:40,096 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:06:40,102 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:06:40,103 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:06:40,106 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:06:40,107 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:06:40,109 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:06:40,111 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:06:40,117 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:06:40,119 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:06:40,120 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:06:40,122 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:06:40,129 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:06:40,130 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:06:40,133 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:06:40,135 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:06:40,136 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:06:40,144 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:06:40,145 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:06:40,145 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:06:40,147 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:06:40,148 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:06:40,149 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:06:40,149 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:06:40,150 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:06:40,152 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:06:40,167 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:06:40,168 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:06:40,168 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:06:40,169 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:06:40,169 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:06:40,170 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:06:40,171 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:06:40,171 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:06:40,176 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dec5e3-b6ff-4b43-a9ff-ee2c231b38ea/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-23 14:06:40,221 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:06:40,221 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:06:40,223 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:06:40,223 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:06:40,224 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:06:40,224 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:06:40,225 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:06:40,225 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:06:40,225 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:06:40,225 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:06:40,226 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:06:40,227 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:06:40,228 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:06:40,228 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:06:40,228 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 14:06:40,228 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:06:40,228 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 14:06:40,229 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-23 14:06:40,229 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-23 14:06:40,229 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-23 14:06:40,229 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 14:06:40,230 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:06:40,230 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 14:06:40,230 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:06:40,230 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 14:06:40,231 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:06:40,231 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:06:40,231 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:06:40,231 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:06:40,232 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 14:06:40,232 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-23 14:06:40,232 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-23 14:06:40,233 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 14:06:40,233 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:06:40,233 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 14:06:40,233 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_42dec5e3-b6ff-4b43-a9ff-ee2c231b38ea/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dec5e3-b6ff-4b43-a9ff-ee2c231b38ea/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c16eea741307fcf998a7d8c15fea1df6c992fe7672606bd6ee824e0bc4e8768f [2022-11-23 14:06:40,622 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:06:40,653 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:06:40,656 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:06:40,659 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:06:40,660 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:06:40,661 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dec5e3-b6ff-4b43-a9ff-ee2c231b38ea/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.v_FIFO.c [2022-11-23 14:06:43,847 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:06:44,167 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:06:44,168 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dec5e3-b6ff-4b43-a9ff-ee2c231b38ea/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.v_FIFO.c [2022-11-23 14:06:44,179 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dec5e3-b6ff-4b43-a9ff-ee2c231b38ea/bin/utaipan-Q6hlc19bkW/data/081456337/82a9ab3bca9448a59e406d52a57275df/FLAG333c65798 [2022-11-23 14:06:44,420 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dec5e3-b6ff-4b43-a9ff-ee2c231b38ea/bin/utaipan-Q6hlc19bkW/data/081456337/82a9ab3bca9448a59e406d52a57275df [2022-11-23 14:06:44,422 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:06:44,423 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:06:44,425 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:06:44,425 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:06:44,433 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:06:44,434 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:06:44" (1/1) ... [2022-11-23 14:06:44,435 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55371dc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:44, skipping insertion in model container [2022-11-23 14:06:44,436 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:06:44" (1/1) ... [2022-11-23 14:06:44,443 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:06:44,511 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:06:44,754 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_42dec5e3-b6ff-4b43-a9ff-ee2c231b38ea/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.v_FIFO.c[1107,1120] [2022-11-23 14:06:45,008 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:06:45,019 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 14:06:45,030 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_42dec5e3-b6ff-4b43-a9ff-ee2c231b38ea/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.v_FIFO.c[1107,1120] [2022-11-23 14:06:45,122 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:06:45,134 INFO L208 MainTranslator]: Completed translation [2022-11-23 14:06:45,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:45 WrapperNode [2022-11-23 14:06:45,135 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:06:45,136 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 14:06:45,136 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 14:06:45,137 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 14:06:45,174 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:45" (1/1) ... [2022-11-23 14:06:45,218 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:45" (1/1) ... [2022-11-23 14:06:45,293 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 836 [2022-11-23 14:06:45,293 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 14:06:45,295 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 14:06:45,295 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 14:06:45,295 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 14:06:45,305 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:45" (1/1) ... [2022-11-23 14:06:45,306 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:45" (1/1) ... [2022-11-23 14:06:45,319 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:45" (1/1) ... [2022-11-23 14:06:45,320 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:45" (1/1) ... [2022-11-23 14:06:45,353 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:45" (1/1) ... [2022-11-23 14:06:45,357 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:45" (1/1) ... [2022-11-23 14:06:45,378 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:45" (1/1) ... [2022-11-23 14:06:45,382 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:45" (1/1) ... [2022-11-23 14:06:45,389 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 14:06:45,390 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 14:06:45,390 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 14:06:45,390 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 14:06:45,391 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:45" (1/1) ... [2022-11-23 14:06:45,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:06:45,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dec5e3-b6ff-4b43-a9ff-ee2c231b38ea/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:06:45,432 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dec5e3-b6ff-4b43-a9ff-ee2c231b38ea/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 14:06:45,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dec5e3-b6ff-4b43-a9ff-ee2c231b38ea/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 14:06:45,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 14:06:45,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 14:06:45,726 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 14:06:45,728 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 14:06:46,841 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 14:06:46,854 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 14:06:46,854 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 14:06:46,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:06:46 BoogieIcfgContainer [2022-11-23 14:06:46,856 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 14:06:46,859 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 14:06:46,859 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 14:06:46,863 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 14:06:46,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:06:44" (1/3) ... [2022-11-23 14:06:46,865 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25fe4469 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:06:46, skipping insertion in model container [2022-11-23 14:06:46,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:06:45" (2/3) ... [2022-11-23 14:06:46,867 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25fe4469 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:06:46, skipping insertion in model container [2022-11-23 14:06:46,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:06:46" (3/3) ... [2022-11-23 14:06:46,868 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.v_FIFO.c [2022-11-23 14:06:46,889 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 14:06:46,889 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 14:06:46,951 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:06:46,958 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;@1607c199, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:06:46,959 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 14:06:46,964 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:06:46,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-23 14:06:46,973 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:06:46,974 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-23 14:06:46,974 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:06:46,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:06:46,982 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-23 14:06:46,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:06:46,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [676681643] [2022-11-23 14:06:47,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:06:47,000 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 [2022-11-23 14:06:47,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dec5e3-b6ff-4b43-a9ff-ee2c231b38ea/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:06:47,011 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dec5e3-b6ff-4b43-a9ff-ee2c231b38ea/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 14:06:47,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dec5e3-b6ff-4b43-a9ff-ee2c231b38ea/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 14:06:47,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:06:47,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-23 14:06:47,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:06:47,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:06:47,730 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:06:47,731 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:06:47,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [676681643] [2022-11-23 14:06:47,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [676681643] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:06:47,732 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:06:47,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:06:47,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900806990] [2022-11-23 14:06:47,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:06:47,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:06:47,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:06:47,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:06:47,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:06:47,776 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:06:47,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:06:47,947 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-11-23 14:06:47,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 14:06:47,950 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-23 14:06:47,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:06:47,958 INFO L225 Difference]: With dead ends: 20 [2022-11-23 14:06:47,958 INFO L226 Difference]: Without dead ends: 11 [2022-11-23 14:06:47,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:06:47,965 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:06:47,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:06:47,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-23 14:06:47,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-11-23 14:06:47,998 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) [2022-11-23 14:06:47,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-23 14:06:48,001 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-11-23 14:06:48,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:06:48,002 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-23 14:06:48,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:06:48,002 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-23 14:06:48,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-23 14:06:48,003 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:06:48,003 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-23 14:06:48,021 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dec5e3-b6ff-4b43-a9ff-ee2c231b38ea/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 14:06:48,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dec5e3-b6ff-4b43-a9ff-ee2c231b38ea/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 14:06:48,215 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:06:48,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:06:48,216 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-11-23 14:06:48,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:06:48,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [92819378] [2022-11-23 14:06:48,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:06:48,218 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 [2022-11-23 14:06:48,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dec5e3-b6ff-4b43-a9ff-ee2c231b38ea/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:06:48,220 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dec5e3-b6ff-4b43-a9ff-ee2c231b38ea/bin/utaipan-Q6hlc19bkW/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) [2022-11-23 14:06:48,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42dec5e3-b6ff-4b43-a9ff-ee2c231b38ea/bin/utaipan-Q6hlc19bkW/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 [2022-11-23 14:06:48,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:06:48,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 826 conjuncts, 283 conjunts are in the unsatisfiable core [2022-11-23 14:06:48,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:07:02,974 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:07:02,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:11:10,318 WARN L233 SmtUtils]: Spent 29.51s on a formula simplification. DAG size of input: 1262 DAG size of output: 304 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)