./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.recount4.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fa0427-e317-43a1-bd7c-e7202c769ec5/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fa0427-e317-43a1-bd7c-e7202c769ec5/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fa0427-e317-43a1-bd7c-e7202c769ec5/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fa0427-e317-43a1-bd7c-e7202c769ec5/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.recount4.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fa0427-e317-43a1-bd7c-e7202c769ec5/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fa0427-e317-43a1-bd7c-e7202c769ec5/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 6270eb1b6253e856606c006aad6f25958ddccc57a27345214c2cf80ca93686b2 --- 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 11:35:01,012 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:35:01,016 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:35:01,063 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:35:01,064 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:35:01,065 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:35:01,066 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:35:01,068 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:35:01,074 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:35:01,081 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:35:01,083 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:35:01,087 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:35:01,087 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:35:01,090 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:35:01,094 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:35:01,096 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:35:01,098 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:35:01,099 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:35:01,101 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:35:01,108 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:35:01,110 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:35:01,112 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:35:01,114 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:35:01,115 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:35:01,127 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:35:01,127 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:35:01,127 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:35:01,130 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:35:01,130 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:35:01,133 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:35:01,133 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:35:01,134 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:35:01,136 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:35:01,138 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:35:01,139 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:35:01,139 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:35:01,140 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:35:01,140 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:35:01,141 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:35:01,143 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:35:01,144 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:35:01,145 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fa0427-e317-43a1-bd7c-e7202c769ec5/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-20 11:35:01,194 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:35:01,194 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:35:01,195 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:35:01,195 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:35:01,197 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:35:01,197 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:35:01,198 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:35:01,198 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:35:01,199 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:35:01,199 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:35:01,200 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:35:01,201 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:35:01,201 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:35:01,201 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:35:01,202 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:35:01,202 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:35:01,202 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:35:01,203 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:35:01,203 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:35:01,203 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:35:01,204 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:35:01,204 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:35:01,205 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:35:01,205 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:35:01,205 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:35:01,205 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:35:01,206 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:35:01,206 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:35:01,206 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:35:01,207 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:35:01,207 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_d2fa0427-e317-43a1-bd7c-e7202c769ec5/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fa0427-e317-43a1-bd7c-e7202c769ec5/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6270eb1b6253e856606c006aad6f25958ddccc57a27345214c2cf80ca93686b2 [2022-11-20 11:35:01,582 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:35:01,617 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:35:01,621 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:35:01,623 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:35:01,623 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:35:01,625 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fa0427-e317-43a1-bd7c-e7202c769ec5/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.recount4.c [2022-11-20 11:35:05,087 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:35:05,355 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:35:05,355 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fa0427-e317-43a1-bd7c-e7202c769ec5/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.recount4.c [2022-11-20 11:35:05,362 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fa0427-e317-43a1-bd7c-e7202c769ec5/bin/uautomizer-ug76WZFUDN/data/936f99ea7/69b55a1710494e558c31a4d060d8103f/FLAG4ee8eab95 [2022-11-20 11:35:05,377 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fa0427-e317-43a1-bd7c-e7202c769ec5/bin/uautomizer-ug76WZFUDN/data/936f99ea7/69b55a1710494e558c31a4d060d8103f [2022-11-20 11:35:05,381 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:35:05,382 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:35:05,384 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:35:05,384 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:35:05,389 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:35:05,390 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:35:05" (1/1) ... [2022-11-20 11:35:05,391 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f6d1f08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:05, skipping insertion in model container [2022-11-20 11:35:05,392 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:35:05" (1/1) ... [2022-11-20 11:35:05,401 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:35:05,419 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:35:05,578 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_d2fa0427-e317-43a1-bd7c-e7202c769ec5/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.recount4.c[1117,1130] [2022-11-20 11:35:05,622 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:35:05,628 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:35:05,645 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_d2fa0427-e317-43a1-bd7c-e7202c769ec5/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.recount4.c[1117,1130] [2022-11-20 11:35:05,671 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:35:05,691 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:35:05,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:05 WrapperNode [2022-11-20 11:35:05,694 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:35:05,697 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:35:05,697 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:35:05,698 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:35:05,707 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:05" (1/1) ... [2022-11-20 11:35:05,716 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:05" (1/1) ... [2022-11-20 11:35:05,751 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 51 [2022-11-20 11:35:05,752 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:35:05,753 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:35:05,753 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:35:05,753 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:35:05,764 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:05" (1/1) ... [2022-11-20 11:35:05,765 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:05" (1/1) ... [2022-11-20 11:35:05,777 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:05" (1/1) ... [2022-11-20 11:35:05,778 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:05" (1/1) ... [2022-11-20 11:35:05,783 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:05" (1/1) ... [2022-11-20 11:35:05,793 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:05" (1/1) ... [2022-11-20 11:35:05,794 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:05" (1/1) ... [2022-11-20 11:35:05,796 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:05" (1/1) ... [2022-11-20 11:35:05,799 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:35:05,800 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:35:05,801 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:35:05,801 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:35:05,802 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:05" (1/1) ... [2022-11-20 11:35:05,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:35:05,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fa0427-e317-43a1-bd7c-e7202c769ec5/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:35:05,847 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fa0427-e317-43a1-bd7c-e7202c769ec5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:35:05,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fa0427-e317-43a1-bd7c-e7202c769ec5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:35:05,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:35:05,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:35:05,998 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:35:06,001 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:35:06,206 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:35:06,215 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:35:06,215 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 11:35:06,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:35:06 BoogieIcfgContainer [2022-11-20 11:35:06,226 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:35:06,229 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:35:06,238 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:35:06,242 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:35:06,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:35:05" (1/3) ... [2022-11-20 11:35:06,243 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cae2c35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:35:06, skipping insertion in model container [2022-11-20 11:35:06,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:05" (2/3) ... [2022-11-20 11:35:06,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cae2c35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:35:06, skipping insertion in model container [2022-11-20 11:35:06,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:35:06" (3/3) ... [2022-11-20 11:35:06,246 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.recount4.c [2022-11-20 11:35:06,270 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:35:06,271 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 11:35:06,390 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:35:06,407 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@cb650a1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:35:06,407 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 11:35:06,435 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:35:06,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 11:35:06,441 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:35:06,442 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-20 11:35:06,443 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:35:06,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:35:06,448 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-20 11:35:06,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:35:06,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068405801] [2022-11-20 11:35:06,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:35:06,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:35:06,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:07,273 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 11:35:07,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:35:07,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068405801] [2022-11-20 11:35:07,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068405801] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:35:07,280 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:35:07,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:35:07,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567779955] [2022-11-20 11:35:07,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:35:07,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:35:07,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:35:07,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:35:07,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:35:07,331 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:35:07,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:35:07,393 INFO L93 Difference]: Finished difference Result 19 states and 27 transitions. [2022-11-20 11:35:07,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:35:07,396 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-20 11:35:07,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:35:07,406 INFO L225 Difference]: With dead ends: 19 [2022-11-20 11:35:07,407 INFO L226 Difference]: Without dead ends: 10 [2022-11-20 11:35:07,410 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 [2022-11-20 11:35:07,415 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 5 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:35:07,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 12 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:35:07,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2022-11-20 11:35:07,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2022-11-20 11:35:07,451 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 11:35:07,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-20 11:35:07,453 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-11-20 11:35:07,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:35:07,453 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-20 11:35:07,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:35:07,454 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-20 11:35:07,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-20 11:35:07,455 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:35:07,455 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-20 11:35:07,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:35:07,456 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:35:07,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:35:07,457 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-11-20 11:35:07,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:35:07,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511135592] [2022-11-20 11:35:07,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:35:07,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:35:07,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:35:07,612 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 11:35:07,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:35:07,801 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 11:35:07,802 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 11:35:07,804 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-20 11:35:07,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 11:35:07,814 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-20 11:35:07,819 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 11:35:07,852 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-20 11:35:07,853 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-20 11:35:07,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 11:35:07 BoogieIcfgContainer [2022-11-20 11:35:07,871 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 11:35:07,878 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 11:35:07,878 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 11:35:07,878 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 11:35:07,879 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:35:06" (3/4) ... [2022-11-20 11:35:07,882 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-20 11:35:07,882 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 11:35:07,883 INFO L158 Benchmark]: Toolchain (without parser) took 2500.97ms. Allocated memory is still 211.8MB. Free memory was 167.2MB in the beginning and 169.5MB in the end (delta: -2.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:35:07,884 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 134.2MB. Free memory is still 78.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:35:07,884 INFO L158 Benchmark]: CACSL2BoogieTranslator took 311.75ms. Allocated memory is still 211.8MB. Free memory was 167.2MB in the beginning and 156.6MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 11:35:07,885 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.05ms. Allocated memory is still 211.8MB. Free memory was 156.6MB in the beginning and 155.3MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:35:07,885 INFO L158 Benchmark]: Boogie Preprocessor took 46.47ms. Allocated memory is still 211.8MB. Free memory was 155.3MB in the beginning and 153.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 11:35:07,886 INFO L158 Benchmark]: RCFGBuilder took 425.88ms. Allocated memory is still 211.8MB. Free memory was 153.8MB in the beginning and 143.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 11:35:07,886 INFO L158 Benchmark]: TraceAbstraction took 1642.10ms. Allocated memory is still 211.8MB. Free memory was 142.7MB in the beginning and 169.5MB in the end (delta: -26.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:35:07,886 INFO L158 Benchmark]: Witness Printer took 4.89ms. Allocated memory is still 211.8MB. Free memory is still 169.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:35:07,889 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 134.2MB. Free memory is still 78.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 311.75ms. Allocated memory is still 211.8MB. Free memory was 167.2MB in the beginning and 156.6MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.05ms. Allocated memory is still 211.8MB. Free memory was 156.6MB in the beginning and 155.3MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 46.47ms. Allocated memory is still 211.8MB. Free memory was 155.3MB in the beginning and 153.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 425.88ms. Allocated memory is still 211.8MB. Free memory was 153.8MB in the beginning and 143.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 1642.10ms. Allocated memory is still 211.8MB. Free memory was 142.7MB in the beginning and 169.5MB in the end (delta: -26.7MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.89ms. Allocated memory is still 211.8MB. Free memory is still 169.5MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 21]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseAnd at line 46. 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_4 mask_SORT_4 = (SORT_4)-1 >> (sizeof(SORT_4) * 8 - 4); [L30] const SORT_4 msb_SORT_4 = (SORT_4)1 << (4 - 1); [L32] const SORT_4 var_5 = 0; [L33] const SORT_4 var_8 = 1; [L34] const SORT_4 var_13 = mask_SORT_4; [L36] SORT_1 input_2; [L37] SORT_1 input_3; [L39] SORT_4 state_6 = __VERIFIER_nondet_uchar() & mask_SORT_4; [L41] SORT_4 init_7_arg_1 = var_5; [L42] state_6 = init_7_arg_1 VAL [init_7_arg_1=0, mask_SORT_1=1, mask_SORT_4=15, msb_SORT_1=1, msb_SORT_4=8, state_6=0, var_13=15, var_5=0, var_8=1] [L45] input_2 = __VERIFIER_nondet_uchar() [L46] input_2 = input_2 & mask_SORT_1 [L47] input_3 = __VERIFIER_nondet_uchar() [L48] input_3 = input_3 & mask_SORT_1 [L51] SORT_4 var_14_arg_0 = state_6; [L52] SORT_4 var_14_arg_1 = var_13; [L53] SORT_1 var_14 = var_14_arg_0 == var_14_arg_1; [L54] SORT_1 bad_15_arg_0 = var_14; [L55] CALL __VERIFIER_assert(!(bad_15_arg_0)) [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L55] RET __VERIFIER_assert(!(bad_15_arg_0)) [L57] SORT_4 var_9_arg_0 = state_6; [L58] SORT_4 var_9_arg_1 = var_8; [L59] SORT_4 var_9 = var_9_arg_0 + var_9_arg_1; [L60] SORT_1 var_10_arg_0 = input_2; [L61] SORT_4 var_10_arg_1 = var_9; [L62] SORT_4 var_10_arg_2 = state_6; [L63] SORT_4 var_10 = var_10_arg_0 ? var_10_arg_1 : var_10_arg_2; [L64] SORT_1 var_11_arg_0 = input_3; [L65] SORT_4 var_11_arg_1 = var_5; [L66] SORT_4 var_11_arg_2 = var_10; [L67] SORT_4 var_11 = var_11_arg_0 ? var_11_arg_1 : var_11_arg_2; [L68] var_11 = var_11 & mask_SORT_4 [L69] SORT_4 next_12_arg_1 = var_11; [L71] state_6 = next_12_arg_1 VAL [bad_15_arg_0=0, init_7_arg_1=0, input_2=3, input_3=0, mask_SORT_1=1, mask_SORT_4=15, msb_SORT_1=1, msb_SORT_4=8, next_12_arg_1=15, state_6=15, var_10=1, var_10_arg_0=3, var_10_arg_1=1, var_10_arg_2=0, var_11=15, var_11_arg_0=0, var_11_arg_1=0, var_11_arg_2=1, var_13=15, var_14=0, var_14_arg_0=0, var_14_arg_1=15, var_5=0, var_8=1, var_9=1, var_9_arg_0=0, var_9_arg_1=1] [L45] input_2 = __VERIFIER_nondet_uchar() [L46] input_2 = input_2 & mask_SORT_1 [L47] input_3 = __VERIFIER_nondet_uchar() [L48] input_3 = input_3 & mask_SORT_1 [L51] SORT_4 var_14_arg_0 = state_6; [L52] SORT_4 var_14_arg_1 = var_13; [L53] SORT_1 var_14 = var_14_arg_0 == var_14_arg_1; [L54] SORT_1 bad_15_arg_0 = var_14; [L55] CALL __VERIFIER_assert(!(bad_15_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, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.4s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5 mSDsluCounter, 12 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7 IncrementalHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 5 mSDtfsCounter, 7 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, InterpolantAutomatonStates: 5, 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, 1 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 16 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 11:35:07,928 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fa0427-e317-43a1-bd7c-e7202c769ec5/bin/uautomizer-ug76WZFUDN/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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fa0427-e317-43a1-bd7c-e7202c769ec5/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fa0427-e317-43a1-bd7c-e7202c769ec5/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fa0427-e317-43a1-bd7c-e7202c769ec5/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fa0427-e317-43a1-bd7c-e7202c769ec5/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.recount4.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fa0427-e317-43a1-bd7c-e7202c769ec5/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fa0427-e317-43a1-bd7c-e7202c769ec5/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 6270eb1b6253e856606c006aad6f25958ddccc57a27345214c2cf80ca93686b2 --- 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 11:35:10,686 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:35:10,688 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:35:10,713 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:35:10,716 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:35:10,719 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:35:10,722 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:35:10,726 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:35:10,730 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:35:10,736 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:35:10,737 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:35:10,740 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:35:10,740 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:35:10,743 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:35:10,744 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:35:10,750 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:35:10,752 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:35:10,752 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:35:10,755 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:35:10,762 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:35:10,764 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:35:10,767 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:35:10,769 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:35:10,769 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:35:10,778 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:35:10,779 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:35:10,779 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:35:10,781 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:35:10,782 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:35:10,783 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:35:10,784 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:35:10,786 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:35:10,788 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:35:10,789 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:35:10,799 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:35:10,799 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:35:10,800 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:35:10,800 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:35:10,801 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:35:10,801 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:35:10,802 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:35:10,808 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fa0427-e317-43a1-bd7c-e7202c769ec5/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-20 11:35:10,853 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:35:10,853 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:35:10,855 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:35:10,855 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:35:10,856 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:35:10,856 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:35:10,857 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:35:10,857 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:35:10,858 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:35:10,858 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:35:10,859 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:35:10,860 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:35:10,860 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:35:10,860 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:35:10,861 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 11:35:10,861 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 11:35:10,861 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 11:35:10,861 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:35:10,862 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:35:10,862 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:35:10,862 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:35:10,863 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:35:10,863 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:35:10,863 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:35:10,864 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:35:10,864 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:35:10,864 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:35:10,864 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-20 11:35:10,865 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 11:35:10,865 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:35:10,865 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:35:10,866 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:35:10,866 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 11:35:10,866 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_d2fa0427-e317-43a1-bd7c-e7202c769ec5/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fa0427-e317-43a1-bd7c-e7202c769ec5/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6270eb1b6253e856606c006aad6f25958ddccc57a27345214c2cf80ca93686b2 [2022-11-20 11:35:11,289 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:35:11,318 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:35:11,323 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:35:11,325 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:35:11,326 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:35:11,328 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fa0427-e317-43a1-bd7c-e7202c769ec5/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.recount4.c [2022-11-20 11:35:15,178 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:35:15,475 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:35:15,475 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fa0427-e317-43a1-bd7c-e7202c769ec5/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.recount4.c [2022-11-20 11:35:15,490 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fa0427-e317-43a1-bd7c-e7202c769ec5/bin/uautomizer-ug76WZFUDN/data/b3d3cb6bb/b0506944c6224f2a8a5816c683e5f8a6/FLAGb85f09fb2 [2022-11-20 11:35:15,519 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fa0427-e317-43a1-bd7c-e7202c769ec5/bin/uautomizer-ug76WZFUDN/data/b3d3cb6bb/b0506944c6224f2a8a5816c683e5f8a6 [2022-11-20 11:35:15,526 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:35:15,528 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:35:15,534 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:35:15,534 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:35:15,539 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:35:15,540 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:35:15" (1/1) ... [2022-11-20 11:35:15,541 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70c20f71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:15, skipping insertion in model container [2022-11-20 11:35:15,542 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:35:15" (1/1) ... [2022-11-20 11:35:15,550 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:35:15,580 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:35:15,794 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_d2fa0427-e317-43a1-bd7c-e7202c769ec5/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.recount4.c[1117,1130] [2022-11-20 11:35:15,857 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:35:15,867 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:35:15,883 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_d2fa0427-e317-43a1-bd7c-e7202c769ec5/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.recount4.c[1117,1130] [2022-11-20 11:35:15,911 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:35:15,927 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:35:15,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:15 WrapperNode [2022-11-20 11:35:15,928 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:35:15,930 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:35:15,930 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:35:15,930 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:35:15,939 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:15" (1/1) ... [2022-11-20 11:35:15,949 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:15" (1/1) ... [2022-11-20 11:35:15,980 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 51 [2022-11-20 11:35:15,981 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:35:15,983 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:35:15,983 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:35:15,983 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:35:15,994 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:15" (1/1) ... [2022-11-20 11:35:15,994 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:15" (1/1) ... [2022-11-20 11:35:16,010 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:15" (1/1) ... [2022-11-20 11:35:16,010 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:15" (1/1) ... [2022-11-20 11:35:16,015 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:15" (1/1) ... [2022-11-20 11:35:16,018 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:15" (1/1) ... [2022-11-20 11:35:16,019 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:15" (1/1) ... [2022-11-20 11:35:16,021 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:15" (1/1) ... [2022-11-20 11:35:16,031 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:35:16,033 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:35:16,034 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:35:16,034 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:35:16,035 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:15" (1/1) ... [2022-11-20 11:35:16,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:35:16,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fa0427-e317-43a1-bd7c-e7202c769ec5/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:35:16,075 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fa0427-e317-43a1-bd7c-e7202c769ec5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:35:16,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fa0427-e317-43a1-bd7c-e7202c769ec5/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:35:16,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:35:16,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:35:16,247 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:35:16,251 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:35:16,481 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:35:16,506 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:35:16,507 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 11:35:16,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:35:16 BoogieIcfgContainer [2022-11-20 11:35:16,509 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:35:16,512 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:35:16,512 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:35:16,515 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:35:16,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:35:15" (1/3) ... [2022-11-20 11:35:16,517 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10fcb1f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:35:16, skipping insertion in model container [2022-11-20 11:35:16,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:35:15" (2/3) ... [2022-11-20 11:35:16,518 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10fcb1f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:35:16, skipping insertion in model container [2022-11-20 11:35:16,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:35:16" (3/3) ... [2022-11-20 11:35:16,519 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.recount4.c [2022-11-20 11:35:16,542 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:35:16,542 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 11:35:16,608 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:35:16,616 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7fdaafea, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:35:16,616 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 11:35:16,621 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:35:16,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 11:35:16,629 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:35:16,630 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-20 11:35:16,630 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:35:16,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:35:16,637 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-20 11:35:16,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:35:16,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1709585687] [2022-11-20 11:35:16,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:35:16,654 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 11:35:16,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fa0427-e317-43a1-bd7c-e7202c769ec5/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:35:16,660 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fa0427-e317-43a1-bd7c-e7202c769ec5/bin/uautomizer-ug76WZFUDN/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 11:35:16,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fa0427-e317-43a1-bd7c-e7202c769ec5/bin/uautomizer-ug76WZFUDN/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 11:35:16,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:16,841 WARN L261 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 11:35:16,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:35:17,080 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 11:35:17,081 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:35:17,082 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:35:17,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1709585687] [2022-11-20 11:35:17,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1709585687] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:35:17,084 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:35:17,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:35:17,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674442398] [2022-11-20 11:35:17,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:35:17,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:35:17,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:35:17,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:35:17,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:35:17,148 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:35:17,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:35:17,242 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-11-20 11:35:17,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:35:17,246 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-20 11:35:17,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:35:17,256 INFO L225 Difference]: With dead ends: 20 [2022-11-20 11:35:17,257 INFO L226 Difference]: Without dead ends: 11 [2022-11-20 11:35:17,261 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 [2022-11-20 11:35:17,269 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:35:17,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:35:17,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-20 11:35:17,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-11-20 11:35:17,348 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 11:35:17,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-20 11:35:17,351 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-11-20 11:35:17,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:35:17,352 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-20 11:35:17,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:35:17,353 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-20 11:35:17,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-20 11:35:17,354 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:35:17,354 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-20 11:35:17,376 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fa0427-e317-43a1-bd7c-e7202c769ec5/bin/uautomizer-ug76WZFUDN/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 11:35:17,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fa0427-e317-43a1-bd7c-e7202c769ec5/bin/uautomizer-ug76WZFUDN/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 11:35:17,568 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:35:17,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:35:17,569 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-11-20 11:35:17,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:35:17,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [498391923] [2022-11-20 11:35:17,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:35:17,571 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 11:35:17,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fa0427-e317-43a1-bd7c-e7202c769ec5/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:35:17,573 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fa0427-e317-43a1-bd7c-e7202c769ec5/bin/uautomizer-ug76WZFUDN/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 11:35:17,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fa0427-e317-43a1-bd7c-e7202c769ec5/bin/uautomizer-ug76WZFUDN/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 11:35:17,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:35:17,658 WARN L261 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-20 11:35:17,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:35:18,102 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:35:18,102 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:35:18,333 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:35:18,333 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:35:18,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [498391923] [2022-11-20 11:35:18,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [498391923] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:35:18,334 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:35:18,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-20 11:35:18,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286838460] [2022-11-20 11:35:18,335 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:35:18,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:35:18,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:35:18,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:35:18,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:35:18,338 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:35:18,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:35:18,490 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2022-11-20 11:35:18,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:35:18,491 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-20 11:35:18,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:35:18,492 INFO L225 Difference]: With dead ends: 19 [2022-11-20 11:35:18,492 INFO L226 Difference]: Without dead ends: 17 [2022-11-20 11:35:18,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-11-20 11:35:18,495 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 17 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:35:18,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 18 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:35:18,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-20 11:35:18,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2022-11-20 11:35:18,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 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 11:35:18,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-11-20 11:35:18,503 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2022-11-20 11:35:18,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:35:18,504 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-11-20 11:35:18,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:35:18,504 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-11-20 11:35:18,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-20 11:35:18,505 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:35:18,505 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1] [2022-11-20 11:35:18,525 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fa0427-e317-43a1-bd7c-e7202c769ec5/bin/uautomizer-ug76WZFUDN/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 11:35:18,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fa0427-e317-43a1-bd7c-e7202c769ec5/bin/uautomizer-ug76WZFUDN/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 11:35:18,719 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:35:18,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:35:18,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1580781475, now seen corresponding path program 2 times [2022-11-20 11:35:18,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:35:18,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1750555838] [2022-11-20 11:35:18,721 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:35:18,721 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 11:35:18,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fa0427-e317-43a1-bd7c-e7202c769ec5/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:35:18,728 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fa0427-e317-43a1-bd7c-e7202c769ec5/bin/uautomizer-ug76WZFUDN/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 11:35:18,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fa0427-e317-43a1-bd7c-e7202c769ec5/bin/uautomizer-ug76WZFUDN/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 11:35:18,823 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:35:18,823 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:35:18,827 WARN L261 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 53 conjunts are in the unsatisfiable core [2022-11-20 11:35:18,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:35:19,745 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:35:19,745 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:35:21,424 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:35:21,425 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:35:21,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1750555838] [2022-11-20 11:35:21,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1750555838] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:35:21,426 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:35:21,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2022-11-20 11:35:21,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240195632] [2022-11-20 11:35:21,427 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:35:21,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 11:35:21,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:35:21,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 11:35:21,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2022-11-20 11:35:21,429 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 15 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 15 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:35:22,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:35:22,459 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2022-11-20 11:35:22,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 11:35:22,460 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 15 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-20 11:35:22,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:35:22,461 INFO L225 Difference]: With dead ends: 31 [2022-11-20 11:35:22,461 INFO L226 Difference]: Without dead ends: 29 [2022-11-20 11:35:22,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=147, Invalid=273, Unknown=0, NotChecked=0, Total=420 [2022-11-20 11:35:22,463 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 67 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:35:22,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 19 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 11:35:22,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-20 11:35:22,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2022-11-20 11:35:22,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.0384615384615385) internal successors, (27), 26 states have internal predecessors, (27), 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 11:35:22,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2022-11-20 11:35:22,477 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 14 [2022-11-20 11:35:22,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:35:22,478 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2022-11-20 11:35:22,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.7333333333333334) internal successors, (26), 15 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:35:22,479 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2022-11-20 11:35:22,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-20 11:35:22,480 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:35:22,480 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 1, 1, 1, 1] [2022-11-20 11:35:22,500 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fa0427-e317-43a1-bd7c-e7202c769ec5/bin/uautomizer-ug76WZFUDN/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 11:35:22,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fa0427-e317-43a1-bd7c-e7202c769ec5/bin/uautomizer-ug76WZFUDN/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 11:35:22,695 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:35:22,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:35:22,696 INFO L85 PathProgramCache]: Analyzing trace with hash -752690141, now seen corresponding path program 3 times [2022-11-20 11:35:22,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:35:22,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [721000531] [2022-11-20 11:35:22,697 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 11:35:22,698 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 11:35:22,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fa0427-e317-43a1-bd7c-e7202c769ec5/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:35:22,699 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fa0427-e317-43a1-bd7c-e7202c769ec5/bin/uautomizer-ug76WZFUDN/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 11:35:22,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fa0427-e317-43a1-bd7c-e7202c769ec5/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-20 11:35:22,843 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-11-20 11:35:22,843 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:35:22,849 WARN L261 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 97 conjunts are in the unsatisfiable core [2022-11-20 11:35:22,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:35:25,593 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:35:25,593 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:35:39,044 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:35:39,045 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:35:39,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [721000531] [2022-11-20 11:35:39,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [721000531] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:35:39,046 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:35:39,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 23 [2022-11-20 11:35:39,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973844376] [2022-11-20 11:35:39,046 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:35:39,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 11:35:39,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:35:39,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 11:35:39,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=332, Unknown=0, NotChecked=0, Total=506 [2022-11-20 11:35:39,049 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand has 23 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 23 states have internal predecessors, (50), 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 11:35:44,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:35:44,989 INFO L93 Difference]: Finished difference Result 55 states and 62 transitions. [2022-11-20 11:35:44,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 11:35:44,990 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 23 states have internal predecessors, (50), 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 26 [2022-11-20 11:35:44,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:35:44,991 INFO L225 Difference]: With dead ends: 55 [2022-11-20 11:35:44,991 INFO L226 Difference]: Without dead ends: 53 [2022-11-20 11:35:44,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=479, Invalid=853, Unknown=0, NotChecked=0, Total=1332 [2022-11-20 11:35:44,993 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 136 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-20 11:35:44,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 28 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-20 11:35:44,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-11-20 11:35:45,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 51. [2022-11-20 11:35:45,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.02) internal successors, (51), 50 states have internal predecessors, (51), 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 11:35:45,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2022-11-20 11:35:45,036 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 26 [2022-11-20 11:35:45,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:35:45,037 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2022-11-20 11:35:45,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.1739130434782608) internal successors, (50), 23 states have internal predecessors, (50), 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 11:35:45,041 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2022-11-20 11:35:45,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-20 11:35:45,043 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:35:45,043 INFO L195 NwaCegarLoop]: trace histogram [16, 15, 15, 1, 1, 1, 1] [2022-11-20 11:35:45,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fa0427-e317-43a1-bd7c-e7202c769ec5/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-20 11:35:45,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fa0427-e317-43a1-bd7c-e7202c769ec5/bin/uautomizer-ug76WZFUDN/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 11:35:45,259 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:35:45,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:35:45,259 INFO L85 PathProgramCache]: Analyzing trace with hash -779438813, now seen corresponding path program 4 times [2022-11-20 11:35:45,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:35:45,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1288777040] [2022-11-20 11:35:45,261 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 11:35:45,261 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 11:35:45,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fa0427-e317-43a1-bd7c-e7202c769ec5/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:35:45,263 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fa0427-e317-43a1-bd7c-e7202c769ec5/bin/uautomizer-ug76WZFUDN/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 11:35:45,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fa0427-e317-43a1-bd7c-e7202c769ec5/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-20 11:35:45,438 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 11:35:45,438 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2022-11-20 11:35:45,438 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 11:35:45,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:35:45,667 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-11-20 11:35:45,667 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 11:35:45,669 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-20 11:35:45,691 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fa0427-e317-43a1-bd7c-e7202c769ec5/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-20 11:35:45,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fa0427-e317-43a1-bd7c-e7202c769ec5/bin/uautomizer-ug76WZFUDN/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 11:35:45,875 INFO L444 BasicCegarLoop]: Path program histogram: [4, 1] [2022-11-20 11:35:45,880 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 11:35:45,959 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-20 11:35:45,964 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-20 11:35:45,965 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-20 11:35:45,965 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-20 11:35:45,965 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-20 11:35:45,965 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-20 11:35:45,965 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-20 11:35:45,966 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-20 11:35:45,966 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-20 11:35:45,966 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-20 11:35:45,966 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-20 11:35:45,966 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-20 11:35:45,967 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-20 11:35:45,967 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-20 11:35:45,967 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-20 11:35:45,967 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-20 11:35:45,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 11:35:45 BoogieIcfgContainer [2022-11-20 11:35:46,005 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 11:35:46,006 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 11:35:46,007 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 11:35:46,007 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 11:35:46,008 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:35:16" (3/4) ... [2022-11-20 11:35:46,010 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-20 11:35:46,048 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-20 11:35:46,057 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-20 11:35:46,058 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-20 11:35:46,058 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-20 11:35:46,058 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-20 11:35:46,058 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-20 11:35:46,058 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-20 11:35:46,059 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-20 11:35:46,059 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-20 11:35:46,059 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-20 11:35:46,059 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-20 11:35:46,059 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-20 11:35:46,060 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-20 11:35:46,060 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-20 11:35:46,060 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-20 11:35:46,060 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-20 11:35:46,185 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fa0427-e317-43a1-bd7c-e7202c769ec5/bin/uautomizer-ug76WZFUDN/witness.graphml [2022-11-20 11:35:46,186 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 11:35:46,186 INFO L158 Benchmark]: Toolchain (without parser) took 30658.96ms. Allocated memory was 73.4MB in the beginning and 337.6MB in the end (delta: 264.2MB). Free memory was 54.0MB in the beginning and 197.6MB in the end (delta: -143.6MB). Peak memory consumption was 121.7MB. Max. memory is 16.1GB. [2022-11-20 11:35:46,187 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 73.4MB. Free memory is still 51.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:35:46,187 INFO L158 Benchmark]: CACSL2BoogieTranslator took 394.26ms. Allocated memory is still 73.4MB. Free memory was 53.7MB in the beginning and 43.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 11:35:46,188 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.43ms. Allocated memory is still 73.4MB. Free memory was 43.3MB in the beginning and 41.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:35:46,188 INFO L158 Benchmark]: Boogie Preprocessor took 48.35ms. Allocated memory is still 73.4MB. Free memory was 41.6MB in the beginning and 40.4MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 11:35:46,188 INFO L158 Benchmark]: RCFGBuilder took 476.91ms. Allocated memory is still 73.4MB. Free memory was 40.4MB in the beginning and 53.9MB in the end (delta: -13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-20 11:35:46,189 INFO L158 Benchmark]: TraceAbstraction took 29493.66ms. Allocated memory was 73.4MB in the beginning and 337.6MB in the end (delta: 264.2MB). Free memory was 53.2MB in the beginning and 208.0MB in the end (delta: -154.8MB). Peak memory consumption was 109.7MB. Max. memory is 16.1GB. [2022-11-20 11:35:46,189 INFO L158 Benchmark]: Witness Printer took 180.03ms. Allocated memory is still 337.6MB. Free memory was 208.0MB in the beginning and 197.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 11:35:46,191 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 73.4MB. Free memory is still 51.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 394.26ms. Allocated memory is still 73.4MB. Free memory was 53.7MB in the beginning and 43.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 51.43ms. Allocated memory is still 73.4MB. Free memory was 43.3MB in the beginning and 41.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 48.35ms. Allocated memory is still 73.4MB. Free memory was 41.6MB in the beginning and 40.4MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 476.91ms. Allocated memory is still 73.4MB. Free memory was 40.4MB in the beginning and 53.9MB in the end (delta: -13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 29493.66ms. Allocated memory was 73.4MB in the beginning and 337.6MB in the end (delta: 264.2MB). Free memory was 53.2MB in the beginning and 208.0MB in the end (delta: -154.8MB). Peak memory consumption was 109.7MB. Max. memory is 16.1GB. * Witness Printer took 180.03ms. Allocated memory is still 337.6MB. Free memory was 208.0MB in the beginning and 197.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. 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_4 mask_SORT_4 = (SORT_4)-1 >> (sizeof(SORT_4) * 8 - 4); [L30] const SORT_4 msb_SORT_4 = (SORT_4)1 << (4 - 1); [L32] const SORT_4 var_5 = 0; [L33] const SORT_4 var_8 = 1; [L34] const SORT_4 var_13 = mask_SORT_4; [L36] SORT_1 input_2; [L37] SORT_1 input_3; [L39] SORT_4 state_6 = __VERIFIER_nondet_uchar() & mask_SORT_4; [L41] SORT_4 init_7_arg_1 = var_5; [L42] state_6 = init_7_arg_1 VAL [init_7_arg_1=0, mask_SORT_1=1, mask_SORT_4=15, msb_SORT_1=1, msb_SORT_4=8, state_6=0, var_13=15, var_5=0, var_8=1] [L45] input_2 = __VERIFIER_nondet_uchar() [L46] input_2 = input_2 & mask_SORT_1 [L47] input_3 = __VERIFIER_nondet_uchar() [L48] input_3 = input_3 & mask_SORT_1 [L51] SORT_4 var_14_arg_0 = state_6; [L52] SORT_4 var_14_arg_1 = var_13; [L53] SORT_1 var_14 = var_14_arg_0 == var_14_arg_1; [L54] SORT_1 bad_15_arg_0 = var_14; [L55] CALL __VERIFIER_assert(!(bad_15_arg_0)) [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L55] RET __VERIFIER_assert(!(bad_15_arg_0)) [L57] SORT_4 var_9_arg_0 = state_6; [L58] SORT_4 var_9_arg_1 = var_8; [L59] SORT_4 var_9 = var_9_arg_0 + var_9_arg_1; [L60] SORT_1 var_10_arg_0 = input_2; [L61] SORT_4 var_10_arg_1 = var_9; [L62] SORT_4 var_10_arg_2 = state_6; [L63] SORT_4 var_10 = var_10_arg_0 ? var_10_arg_1 : var_10_arg_2; [L64] SORT_1 var_11_arg_0 = input_3; [L65] SORT_4 var_11_arg_1 = var_5; [L66] SORT_4 var_11_arg_2 = var_10; [L67] SORT_4 var_11 = var_11_arg_0 ? var_11_arg_1 : var_11_arg_2; [L68] var_11 = var_11 & mask_SORT_4 [L69] SORT_4 next_12_arg_1 = var_11; [L71] state_6 = next_12_arg_1 VAL [bad_15_arg_0=0, init_7_arg_1=0, input_2=1, input_3=0, mask_SORT_1=1, mask_SORT_4=15, msb_SORT_1=1, msb_SORT_4=8, next_12_arg_1=1, state_6=1, var_10=1, var_10_arg_0=1, var_10_arg_1=1, var_10_arg_2=0, var_11=1, var_11_arg_0=0, var_11_arg_1=0, var_11_arg_2=1, var_13=15, var_14=0, var_14_arg_0=0, var_14_arg_1=15, var_5=0, var_8=1, var_9=1, var_9_arg_0=0, var_9_arg_1=1] [L45] input_2 = __VERIFIER_nondet_uchar() [L46] input_2 = input_2 & mask_SORT_1 [L47] input_3 = __VERIFIER_nondet_uchar() [L48] input_3 = input_3 & mask_SORT_1 [L51] SORT_4 var_14_arg_0 = state_6; [L52] SORT_4 var_14_arg_1 = var_13; [L53] SORT_1 var_14 = var_14_arg_0 == var_14_arg_1; [L54] SORT_1 bad_15_arg_0 = var_14; [L55] CALL __VERIFIER_assert(!(bad_15_arg_0)) [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L55] RET __VERIFIER_assert(!(bad_15_arg_0)) [L57] SORT_4 var_9_arg_0 = state_6; [L58] SORT_4 var_9_arg_1 = var_8; [L59] SORT_4 var_9 = var_9_arg_0 + var_9_arg_1; [L60] SORT_1 var_10_arg_0 = input_2; [L61] SORT_4 var_10_arg_1 = var_9; [L62] SORT_4 var_10_arg_2 = state_6; [L63] SORT_4 var_10 = var_10_arg_0 ? var_10_arg_1 : var_10_arg_2; [L64] SORT_1 var_11_arg_0 = input_3; [L65] SORT_4 var_11_arg_1 = var_5; [L66] SORT_4 var_11_arg_2 = var_10; [L67] SORT_4 var_11 = var_11_arg_0 ? var_11_arg_1 : var_11_arg_2; [L68] var_11 = var_11 & mask_SORT_4 [L69] SORT_4 next_12_arg_1 = var_11; [L71] state_6 = next_12_arg_1 VAL [bad_15_arg_0=0, init_7_arg_1=0, input_2=1, input_3=0, mask_SORT_1=1, mask_SORT_4=15, msb_SORT_1=1, msb_SORT_4=8, next_12_arg_1=2, state_6=2, var_10=2, var_10_arg_0=1, var_10_arg_1=2, var_10_arg_2=1, var_11=2, var_11_arg_0=0, var_11_arg_1=0, var_11_arg_2=2, var_13=15, var_14=0, var_14_arg_0=1, var_14_arg_1=15, var_5=0, var_8=1, var_9=2, var_9_arg_0=1, var_9_arg_1=1] [L45] input_2 = __VERIFIER_nondet_uchar() [L46] input_2 = input_2 & mask_SORT_1 [L47] input_3 = __VERIFIER_nondet_uchar() [L48] input_3 = input_3 & mask_SORT_1 [L51] SORT_4 var_14_arg_0 = state_6; [L52] SORT_4 var_14_arg_1 = var_13; [L53] SORT_1 var_14 = var_14_arg_0 == var_14_arg_1; [L54] SORT_1 bad_15_arg_0 = var_14; [L55] CALL __VERIFIER_assert(!(bad_15_arg_0)) [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L55] RET __VERIFIER_assert(!(bad_15_arg_0)) [L57] SORT_4 var_9_arg_0 = state_6; [L58] SORT_4 var_9_arg_1 = var_8; [L59] SORT_4 var_9 = var_9_arg_0 + var_9_arg_1; [L60] SORT_1 var_10_arg_0 = input_2; [L61] SORT_4 var_10_arg_1 = var_9; [L62] SORT_4 var_10_arg_2 = state_6; [L63] SORT_4 var_10 = var_10_arg_0 ? var_10_arg_1 : var_10_arg_2; [L64] SORT_1 var_11_arg_0 = input_3; [L65] SORT_4 var_11_arg_1 = var_5; [L66] SORT_4 var_11_arg_2 = var_10; [L67] SORT_4 var_11 = var_11_arg_0 ? var_11_arg_1 : var_11_arg_2; [L68] var_11 = var_11 & mask_SORT_4 [L69] SORT_4 next_12_arg_1 = var_11; [L71] state_6 = next_12_arg_1 VAL [bad_15_arg_0=0, init_7_arg_1=0, input_2=1, input_3=0, mask_SORT_1=1, mask_SORT_4=15, msb_SORT_1=1, msb_SORT_4=8, next_12_arg_1=3, state_6=3, var_10=3, var_10_arg_0=1, var_10_arg_1=3, var_10_arg_2=2, var_11=3, var_11_arg_0=0, var_11_arg_1=0, var_11_arg_2=3, var_13=15, var_14=0, var_14_arg_0=2, var_14_arg_1=15, var_5=0, var_8=1, var_9=3, var_9_arg_0=2, var_9_arg_1=1] [L45] input_2 = __VERIFIER_nondet_uchar() [L46] input_2 = input_2 & mask_SORT_1 [L47] input_3 = __VERIFIER_nondet_uchar() [L48] input_3 = input_3 & mask_SORT_1 [L51] SORT_4 var_14_arg_0 = state_6; [L52] SORT_4 var_14_arg_1 = var_13; [L53] SORT_1 var_14 = var_14_arg_0 == var_14_arg_1; [L54] SORT_1 bad_15_arg_0 = var_14; [L55] CALL __VERIFIER_assert(!(bad_15_arg_0)) [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L55] RET __VERIFIER_assert(!(bad_15_arg_0)) [L57] SORT_4 var_9_arg_0 = state_6; [L58] SORT_4 var_9_arg_1 = var_8; [L59] SORT_4 var_9 = var_9_arg_0 + var_9_arg_1; [L60] SORT_1 var_10_arg_0 = input_2; [L61] SORT_4 var_10_arg_1 = var_9; [L62] SORT_4 var_10_arg_2 = state_6; [L63] SORT_4 var_10 = var_10_arg_0 ? var_10_arg_1 : var_10_arg_2; [L64] SORT_1 var_11_arg_0 = input_3; [L65] SORT_4 var_11_arg_1 = var_5; [L66] SORT_4 var_11_arg_2 = var_10; [L67] SORT_4 var_11 = var_11_arg_0 ? var_11_arg_1 : var_11_arg_2; [L68] var_11 = var_11 & mask_SORT_4 [L69] SORT_4 next_12_arg_1 = var_11; [L71] state_6 = next_12_arg_1 VAL [bad_15_arg_0=0, init_7_arg_1=0, input_2=1, input_3=0, mask_SORT_1=1, mask_SORT_4=15, msb_SORT_1=1, msb_SORT_4=8, next_12_arg_1=4, state_6=4, var_10=4, var_10_arg_0=1, var_10_arg_1=4, var_10_arg_2=3, var_11=4, var_11_arg_0=0, var_11_arg_1=0, var_11_arg_2=4, var_13=15, var_14=0, var_14_arg_0=3, var_14_arg_1=15, var_5=0, var_8=1, var_9=4, var_9_arg_0=3, var_9_arg_1=1] [L45] input_2 = __VERIFIER_nondet_uchar() [L46] input_2 = input_2 & mask_SORT_1 [L47] input_3 = __VERIFIER_nondet_uchar() [L48] input_3 = input_3 & mask_SORT_1 [L51] SORT_4 var_14_arg_0 = state_6; [L52] SORT_4 var_14_arg_1 = var_13; [L53] SORT_1 var_14 = var_14_arg_0 == var_14_arg_1; [L54] SORT_1 bad_15_arg_0 = var_14; [L55] CALL __VERIFIER_assert(!(bad_15_arg_0)) [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L55] RET __VERIFIER_assert(!(bad_15_arg_0)) [L57] SORT_4 var_9_arg_0 = state_6; [L58] SORT_4 var_9_arg_1 = var_8; [L59] SORT_4 var_9 = var_9_arg_0 + var_9_arg_1; [L60] SORT_1 var_10_arg_0 = input_2; [L61] SORT_4 var_10_arg_1 = var_9; [L62] SORT_4 var_10_arg_2 = state_6; [L63] SORT_4 var_10 = var_10_arg_0 ? var_10_arg_1 : var_10_arg_2; [L64] SORT_1 var_11_arg_0 = input_3; [L65] SORT_4 var_11_arg_1 = var_5; [L66] SORT_4 var_11_arg_2 = var_10; [L67] SORT_4 var_11 = var_11_arg_0 ? var_11_arg_1 : var_11_arg_2; [L68] var_11 = var_11 & mask_SORT_4 [L69] SORT_4 next_12_arg_1 = var_11; [L71] state_6 = next_12_arg_1 VAL [bad_15_arg_0=0, init_7_arg_1=0, input_2=1, input_3=0, mask_SORT_1=1, mask_SORT_4=15, msb_SORT_1=1, msb_SORT_4=8, next_12_arg_1=5, state_6=5, var_10=5, var_10_arg_0=1, var_10_arg_1=5, var_10_arg_2=4, var_11=5, var_11_arg_0=0, var_11_arg_1=0, var_11_arg_2=5, var_13=15, var_14=0, var_14_arg_0=4, var_14_arg_1=15, var_5=0, var_8=1, var_9=5, var_9_arg_0=4, var_9_arg_1=1] [L45] input_2 = __VERIFIER_nondet_uchar() [L46] input_2 = input_2 & mask_SORT_1 [L47] input_3 = __VERIFIER_nondet_uchar() [L48] input_3 = input_3 & mask_SORT_1 [L51] SORT_4 var_14_arg_0 = state_6; [L52] SORT_4 var_14_arg_1 = var_13; [L53] SORT_1 var_14 = var_14_arg_0 == var_14_arg_1; [L54] SORT_1 bad_15_arg_0 = var_14; [L55] CALL __VERIFIER_assert(!(bad_15_arg_0)) [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L55] RET __VERIFIER_assert(!(bad_15_arg_0)) [L57] SORT_4 var_9_arg_0 = state_6; [L58] SORT_4 var_9_arg_1 = var_8; [L59] SORT_4 var_9 = var_9_arg_0 + var_9_arg_1; [L60] SORT_1 var_10_arg_0 = input_2; [L61] SORT_4 var_10_arg_1 = var_9; [L62] SORT_4 var_10_arg_2 = state_6; [L63] SORT_4 var_10 = var_10_arg_0 ? var_10_arg_1 : var_10_arg_2; [L64] SORT_1 var_11_arg_0 = input_3; [L65] SORT_4 var_11_arg_1 = var_5; [L66] SORT_4 var_11_arg_2 = var_10; [L67] SORT_4 var_11 = var_11_arg_0 ? var_11_arg_1 : var_11_arg_2; [L68] var_11 = var_11 & mask_SORT_4 [L69] SORT_4 next_12_arg_1 = var_11; [L71] state_6 = next_12_arg_1 VAL [bad_15_arg_0=0, init_7_arg_1=0, input_2=1, input_3=0, mask_SORT_1=1, mask_SORT_4=15, msb_SORT_1=1, msb_SORT_4=8, next_12_arg_1=6, state_6=6, var_10=6, var_10_arg_0=1, var_10_arg_1=6, var_10_arg_2=5, var_11=6, var_11_arg_0=0, var_11_arg_1=0, var_11_arg_2=6, var_13=15, var_14=0, var_14_arg_0=5, var_14_arg_1=15, var_5=0, var_8=1, var_9=6, var_9_arg_0=5, var_9_arg_1=1] [L45] input_2 = __VERIFIER_nondet_uchar() [L46] input_2 = input_2 & mask_SORT_1 [L47] input_3 = __VERIFIER_nondet_uchar() [L48] input_3 = input_3 & mask_SORT_1 [L51] SORT_4 var_14_arg_0 = state_6; [L52] SORT_4 var_14_arg_1 = var_13; [L53] SORT_1 var_14 = var_14_arg_0 == var_14_arg_1; [L54] SORT_1 bad_15_arg_0 = var_14; [L55] CALL __VERIFIER_assert(!(bad_15_arg_0)) [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L55] RET __VERIFIER_assert(!(bad_15_arg_0)) [L57] SORT_4 var_9_arg_0 = state_6; [L58] SORT_4 var_9_arg_1 = var_8; [L59] SORT_4 var_9 = var_9_arg_0 + var_9_arg_1; [L60] SORT_1 var_10_arg_0 = input_2; [L61] SORT_4 var_10_arg_1 = var_9; [L62] SORT_4 var_10_arg_2 = state_6; [L63] SORT_4 var_10 = var_10_arg_0 ? var_10_arg_1 : var_10_arg_2; [L64] SORT_1 var_11_arg_0 = input_3; [L65] SORT_4 var_11_arg_1 = var_5; [L66] SORT_4 var_11_arg_2 = var_10; [L67] SORT_4 var_11 = var_11_arg_0 ? var_11_arg_1 : var_11_arg_2; [L68] var_11 = var_11 & mask_SORT_4 [L69] SORT_4 next_12_arg_1 = var_11; [L71] state_6 = next_12_arg_1 VAL [bad_15_arg_0=0, init_7_arg_1=0, input_2=1, input_3=0, mask_SORT_1=1, mask_SORT_4=15, msb_SORT_1=1, msb_SORT_4=8, next_12_arg_1=7, state_6=7, var_10=7, var_10_arg_0=1, var_10_arg_1=7, var_10_arg_2=6, var_11=7, var_11_arg_0=0, var_11_arg_1=0, var_11_arg_2=7, var_13=15, var_14=0, var_14_arg_0=6, var_14_arg_1=15, var_5=0, var_8=1, var_9=7, var_9_arg_0=6, var_9_arg_1=1] [L45] input_2 = __VERIFIER_nondet_uchar() [L46] input_2 = input_2 & mask_SORT_1 [L47] input_3 = __VERIFIER_nondet_uchar() [L48] input_3 = input_3 & mask_SORT_1 [L51] SORT_4 var_14_arg_0 = state_6; [L52] SORT_4 var_14_arg_1 = var_13; [L53] SORT_1 var_14 = var_14_arg_0 == var_14_arg_1; [L54] SORT_1 bad_15_arg_0 = var_14; [L55] CALL __VERIFIER_assert(!(bad_15_arg_0)) [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L55] RET __VERIFIER_assert(!(bad_15_arg_0)) [L57] SORT_4 var_9_arg_0 = state_6; [L58] SORT_4 var_9_arg_1 = var_8; [L59] SORT_4 var_9 = var_9_arg_0 + var_9_arg_1; [L60] SORT_1 var_10_arg_0 = input_2; [L61] SORT_4 var_10_arg_1 = var_9; [L62] SORT_4 var_10_arg_2 = state_6; [L63] SORT_4 var_10 = var_10_arg_0 ? var_10_arg_1 : var_10_arg_2; [L64] SORT_1 var_11_arg_0 = input_3; [L65] SORT_4 var_11_arg_1 = var_5; [L66] SORT_4 var_11_arg_2 = var_10; [L67] SORT_4 var_11 = var_11_arg_0 ? var_11_arg_1 : var_11_arg_2; [L68] var_11 = var_11 & mask_SORT_4 [L69] SORT_4 next_12_arg_1 = var_11; [L71] state_6 = next_12_arg_1 VAL [bad_15_arg_0=0, init_7_arg_1=0, input_2=1, input_3=0, mask_SORT_1=1, mask_SORT_4=15, msb_SORT_1=1, msb_SORT_4=8, next_12_arg_1=8, state_6=8, var_10=8, var_10_arg_0=1, var_10_arg_1=8, var_10_arg_2=7, var_11=8, var_11_arg_0=0, var_11_arg_1=0, var_11_arg_2=8, var_13=15, var_14=0, var_14_arg_0=7, var_14_arg_1=15, var_5=0, var_8=1, var_9=8, var_9_arg_0=7, var_9_arg_1=1] [L45] input_2 = __VERIFIER_nondet_uchar() [L46] input_2 = input_2 & mask_SORT_1 [L47] input_3 = __VERIFIER_nondet_uchar() [L48] input_3 = input_3 & mask_SORT_1 [L51] SORT_4 var_14_arg_0 = state_6; [L52] SORT_4 var_14_arg_1 = var_13; [L53] SORT_1 var_14 = var_14_arg_0 == var_14_arg_1; [L54] SORT_1 bad_15_arg_0 = var_14; [L55] CALL __VERIFIER_assert(!(bad_15_arg_0)) [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L55] RET __VERIFIER_assert(!(bad_15_arg_0)) [L57] SORT_4 var_9_arg_0 = state_6; [L58] SORT_4 var_9_arg_1 = var_8; [L59] SORT_4 var_9 = var_9_arg_0 + var_9_arg_1; [L60] SORT_1 var_10_arg_0 = input_2; [L61] SORT_4 var_10_arg_1 = var_9; [L62] SORT_4 var_10_arg_2 = state_6; [L63] SORT_4 var_10 = var_10_arg_0 ? var_10_arg_1 : var_10_arg_2; [L64] SORT_1 var_11_arg_0 = input_3; [L65] SORT_4 var_11_arg_1 = var_5; [L66] SORT_4 var_11_arg_2 = var_10; [L67] SORT_4 var_11 = var_11_arg_0 ? var_11_arg_1 : var_11_arg_2; [L68] var_11 = var_11 & mask_SORT_4 [L69] SORT_4 next_12_arg_1 = var_11; [L71] state_6 = next_12_arg_1 VAL [bad_15_arg_0=0, init_7_arg_1=0, input_2=1, input_3=0, mask_SORT_1=1, mask_SORT_4=15, msb_SORT_1=1, msb_SORT_4=8, next_12_arg_1=9, state_6=9, var_10=9, var_10_arg_0=1, var_10_arg_1=9, var_10_arg_2=8, var_11=9, var_11_arg_0=0, var_11_arg_1=0, var_11_arg_2=9, var_13=15, var_14=0, var_14_arg_0=8, var_14_arg_1=15, var_5=0, var_8=1, var_9=9, var_9_arg_0=8, var_9_arg_1=1] [L45] input_2 = __VERIFIER_nondet_uchar() [L46] input_2 = input_2 & mask_SORT_1 [L47] input_3 = __VERIFIER_nondet_uchar() [L48] input_3 = input_3 & mask_SORT_1 [L51] SORT_4 var_14_arg_0 = state_6; [L52] SORT_4 var_14_arg_1 = var_13; [L53] SORT_1 var_14 = var_14_arg_0 == var_14_arg_1; [L54] SORT_1 bad_15_arg_0 = var_14; [L55] CALL __VERIFIER_assert(!(bad_15_arg_0)) [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L55] RET __VERIFIER_assert(!(bad_15_arg_0)) [L57] SORT_4 var_9_arg_0 = state_6; [L58] SORT_4 var_9_arg_1 = var_8; [L59] SORT_4 var_9 = var_9_arg_0 + var_9_arg_1; [L60] SORT_1 var_10_arg_0 = input_2; [L61] SORT_4 var_10_arg_1 = var_9; [L62] SORT_4 var_10_arg_2 = state_6; [L63] SORT_4 var_10 = var_10_arg_0 ? var_10_arg_1 : var_10_arg_2; [L64] SORT_1 var_11_arg_0 = input_3; [L65] SORT_4 var_11_arg_1 = var_5; [L66] SORT_4 var_11_arg_2 = var_10; [L67] SORT_4 var_11 = var_11_arg_0 ? var_11_arg_1 : var_11_arg_2; [L68] var_11 = var_11 & mask_SORT_4 [L69] SORT_4 next_12_arg_1 = var_11; [L71] state_6 = next_12_arg_1 VAL [bad_15_arg_0=0, init_7_arg_1=0, input_2=1, input_3=0, mask_SORT_1=1, mask_SORT_4=15, msb_SORT_1=1, msb_SORT_4=8, next_12_arg_1=10, state_6=10, var_10=10, var_10_arg_0=1, var_10_arg_1=10, var_10_arg_2=9, var_11=10, var_11_arg_0=0, var_11_arg_1=0, var_11_arg_2=10, var_13=15, var_14=0, var_14_arg_0=9, var_14_arg_1=15, var_5=0, var_8=1, var_9=10, var_9_arg_0=9, var_9_arg_1=1] [L45] input_2 = __VERIFIER_nondet_uchar() [L46] input_2 = input_2 & mask_SORT_1 [L47] input_3 = __VERIFIER_nondet_uchar() [L48] input_3 = input_3 & mask_SORT_1 [L51] SORT_4 var_14_arg_0 = state_6; [L52] SORT_4 var_14_arg_1 = var_13; [L53] SORT_1 var_14 = var_14_arg_0 == var_14_arg_1; [L54] SORT_1 bad_15_arg_0 = var_14; [L55] CALL __VERIFIER_assert(!(bad_15_arg_0)) [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L55] RET __VERIFIER_assert(!(bad_15_arg_0)) [L57] SORT_4 var_9_arg_0 = state_6; [L58] SORT_4 var_9_arg_1 = var_8; [L59] SORT_4 var_9 = var_9_arg_0 + var_9_arg_1; [L60] SORT_1 var_10_arg_0 = input_2; [L61] SORT_4 var_10_arg_1 = var_9; [L62] SORT_4 var_10_arg_2 = state_6; [L63] SORT_4 var_10 = var_10_arg_0 ? var_10_arg_1 : var_10_arg_2; [L64] SORT_1 var_11_arg_0 = input_3; [L65] SORT_4 var_11_arg_1 = var_5; [L66] SORT_4 var_11_arg_2 = var_10; [L67] SORT_4 var_11 = var_11_arg_0 ? var_11_arg_1 : var_11_arg_2; [L68] var_11 = var_11 & mask_SORT_4 [L69] SORT_4 next_12_arg_1 = var_11; [L71] state_6 = next_12_arg_1 VAL [bad_15_arg_0=0, init_7_arg_1=0, input_2=1, input_3=0, mask_SORT_1=1, mask_SORT_4=15, msb_SORT_1=1, msb_SORT_4=8, next_12_arg_1=11, state_6=11, var_10=11, var_10_arg_0=1, var_10_arg_1=11, var_10_arg_2=10, var_11=11, var_11_arg_0=0, var_11_arg_1=0, var_11_arg_2=11, var_13=15, var_14=0, var_14_arg_0=10, var_14_arg_1=15, var_5=0, var_8=1, var_9=11, var_9_arg_0=10, var_9_arg_1=1] [L45] input_2 = __VERIFIER_nondet_uchar() [L46] input_2 = input_2 & mask_SORT_1 [L47] input_3 = __VERIFIER_nondet_uchar() [L48] input_3 = input_3 & mask_SORT_1 [L51] SORT_4 var_14_arg_0 = state_6; [L52] SORT_4 var_14_arg_1 = var_13; [L53] SORT_1 var_14 = var_14_arg_0 == var_14_arg_1; [L54] SORT_1 bad_15_arg_0 = var_14; [L55] CALL __VERIFIER_assert(!(bad_15_arg_0)) [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L55] RET __VERIFIER_assert(!(bad_15_arg_0)) [L57] SORT_4 var_9_arg_0 = state_6; [L58] SORT_4 var_9_arg_1 = var_8; [L59] SORT_4 var_9 = var_9_arg_0 + var_9_arg_1; [L60] SORT_1 var_10_arg_0 = input_2; [L61] SORT_4 var_10_arg_1 = var_9; [L62] SORT_4 var_10_arg_2 = state_6; [L63] SORT_4 var_10 = var_10_arg_0 ? var_10_arg_1 : var_10_arg_2; [L64] SORT_1 var_11_arg_0 = input_3; [L65] SORT_4 var_11_arg_1 = var_5; [L66] SORT_4 var_11_arg_2 = var_10; [L67] SORT_4 var_11 = var_11_arg_0 ? var_11_arg_1 : var_11_arg_2; [L68] var_11 = var_11 & mask_SORT_4 [L69] SORT_4 next_12_arg_1 = var_11; [L71] state_6 = next_12_arg_1 VAL [bad_15_arg_0=0, init_7_arg_1=0, input_2=1, input_3=0, mask_SORT_1=1, mask_SORT_4=15, msb_SORT_1=1, msb_SORT_4=8, next_12_arg_1=12, state_6=12, var_10=12, var_10_arg_0=1, var_10_arg_1=12, var_10_arg_2=11, var_11=12, var_11_arg_0=0, var_11_arg_1=0, var_11_arg_2=12, var_13=15, var_14=0, var_14_arg_0=11, var_14_arg_1=15, var_5=0, var_8=1, var_9=12, var_9_arg_0=11, var_9_arg_1=1] [L45] input_2 = __VERIFIER_nondet_uchar() [L46] input_2 = input_2 & mask_SORT_1 [L47] input_3 = __VERIFIER_nondet_uchar() [L48] input_3 = input_3 & mask_SORT_1 [L51] SORT_4 var_14_arg_0 = state_6; [L52] SORT_4 var_14_arg_1 = var_13; [L53] SORT_1 var_14 = var_14_arg_0 == var_14_arg_1; [L54] SORT_1 bad_15_arg_0 = var_14; [L55] CALL __VERIFIER_assert(!(bad_15_arg_0)) [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L55] RET __VERIFIER_assert(!(bad_15_arg_0)) [L57] SORT_4 var_9_arg_0 = state_6; [L58] SORT_4 var_9_arg_1 = var_8; [L59] SORT_4 var_9 = var_9_arg_0 + var_9_arg_1; [L60] SORT_1 var_10_arg_0 = input_2; [L61] SORT_4 var_10_arg_1 = var_9; [L62] SORT_4 var_10_arg_2 = state_6; [L63] SORT_4 var_10 = var_10_arg_0 ? var_10_arg_1 : var_10_arg_2; [L64] SORT_1 var_11_arg_0 = input_3; [L65] SORT_4 var_11_arg_1 = var_5; [L66] SORT_4 var_11_arg_2 = var_10; [L67] SORT_4 var_11 = var_11_arg_0 ? var_11_arg_1 : var_11_arg_2; [L68] var_11 = var_11 & mask_SORT_4 [L69] SORT_4 next_12_arg_1 = var_11; [L71] state_6 = next_12_arg_1 VAL [bad_15_arg_0=0, init_7_arg_1=0, input_2=1, input_3=0, mask_SORT_1=1, mask_SORT_4=15, msb_SORT_1=1, msb_SORT_4=8, next_12_arg_1=13, state_6=13, var_10=13, var_10_arg_0=1, var_10_arg_1=13, var_10_arg_2=12, var_11=13, var_11_arg_0=0, var_11_arg_1=0, var_11_arg_2=13, var_13=15, var_14=0, var_14_arg_0=12, var_14_arg_1=15, var_5=0, var_8=1, var_9=13, var_9_arg_0=12, var_9_arg_1=1] [L45] input_2 = __VERIFIER_nondet_uchar() [L46] input_2 = input_2 & mask_SORT_1 [L47] input_3 = __VERIFIER_nondet_uchar() [L48] input_3 = input_3 & mask_SORT_1 [L51] SORT_4 var_14_arg_0 = state_6; [L52] SORT_4 var_14_arg_1 = var_13; [L53] SORT_1 var_14 = var_14_arg_0 == var_14_arg_1; [L54] SORT_1 bad_15_arg_0 = var_14; [L55] CALL __VERIFIER_assert(!(bad_15_arg_0)) [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L55] RET __VERIFIER_assert(!(bad_15_arg_0)) [L57] SORT_4 var_9_arg_0 = state_6; [L58] SORT_4 var_9_arg_1 = var_8; [L59] SORT_4 var_9 = var_9_arg_0 + var_9_arg_1; [L60] SORT_1 var_10_arg_0 = input_2; [L61] SORT_4 var_10_arg_1 = var_9; [L62] SORT_4 var_10_arg_2 = state_6; [L63] SORT_4 var_10 = var_10_arg_0 ? var_10_arg_1 : var_10_arg_2; [L64] SORT_1 var_11_arg_0 = input_3; [L65] SORT_4 var_11_arg_1 = var_5; [L66] SORT_4 var_11_arg_2 = var_10; [L67] SORT_4 var_11 = var_11_arg_0 ? var_11_arg_1 : var_11_arg_2; [L68] var_11 = var_11 & mask_SORT_4 [L69] SORT_4 next_12_arg_1 = var_11; [L71] state_6 = next_12_arg_1 VAL [bad_15_arg_0=0, init_7_arg_1=0, input_2=1, input_3=0, mask_SORT_1=1, mask_SORT_4=15, msb_SORT_1=1, msb_SORT_4=8, next_12_arg_1=14, state_6=14, var_10=14, var_10_arg_0=1, var_10_arg_1=14, var_10_arg_2=13, var_11=14, var_11_arg_0=0, var_11_arg_1=0, var_11_arg_2=14, var_13=15, var_14=0, var_14_arg_0=13, var_14_arg_1=15, var_5=0, var_8=1, var_9=14, var_9_arg_0=13, var_9_arg_1=1] [L45] input_2 = __VERIFIER_nondet_uchar() [L46] input_2 = input_2 & mask_SORT_1 [L47] input_3 = __VERIFIER_nondet_uchar() [L48] input_3 = input_3 & mask_SORT_1 [L51] SORT_4 var_14_arg_0 = state_6; [L52] SORT_4 var_14_arg_1 = var_13; [L53] SORT_1 var_14 = var_14_arg_0 == var_14_arg_1; [L54] SORT_1 bad_15_arg_0 = var_14; [L55] CALL __VERIFIER_assert(!(bad_15_arg_0)) [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L55] RET __VERIFIER_assert(!(bad_15_arg_0)) [L57] SORT_4 var_9_arg_0 = state_6; [L58] SORT_4 var_9_arg_1 = var_8; [L59] SORT_4 var_9 = var_9_arg_0 + var_9_arg_1; [L60] SORT_1 var_10_arg_0 = input_2; [L61] SORT_4 var_10_arg_1 = var_9; [L62] SORT_4 var_10_arg_2 = state_6; [L63] SORT_4 var_10 = var_10_arg_0 ? var_10_arg_1 : var_10_arg_2; [L64] SORT_1 var_11_arg_0 = input_3; [L65] SORT_4 var_11_arg_1 = var_5; [L66] SORT_4 var_11_arg_2 = var_10; [L67] SORT_4 var_11 = var_11_arg_0 ? var_11_arg_1 : var_11_arg_2; [L68] var_11 = var_11 & mask_SORT_4 [L69] SORT_4 next_12_arg_1 = var_11; [L71] state_6 = next_12_arg_1 VAL [bad_15_arg_0=0, init_7_arg_1=0, input_2=1, input_3=0, mask_SORT_1=1, mask_SORT_4=15, msb_SORT_1=1, msb_SORT_4=8, next_12_arg_1=15, state_6=15, var_10=15, var_10_arg_0=1, var_10_arg_1=15, var_10_arg_2=14, var_11=15, var_11_arg_0=0, var_11_arg_1=0, var_11_arg_2=15, var_13=15, var_14=0, var_14_arg_0=14, var_14_arg_1=15, var_5=0, var_8=1, var_9=15, var_9_arg_0=14, var_9_arg_1=1] [L45] input_2 = __VERIFIER_nondet_uchar() [L46] input_2 = input_2 & mask_SORT_1 [L47] input_3 = __VERIFIER_nondet_uchar() [L48] input_3 = input_3 & mask_SORT_1 [L51] SORT_4 var_14_arg_0 = state_6; [L52] SORT_4 var_14_arg_1 = var_13; [L53] SORT_1 var_14 = var_14_arg_0 == var_14_arg_1; [L54] SORT_1 bad_15_arg_0 = var_14; [L55] CALL __VERIFIER_assert(!(bad_15_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, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 29.3s, OverallIterations: 5, TraceHistogramMax: 16, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 7.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 224 SdHoareTripleChecker+Valid, 2.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 224 mSDsluCounter, 78 SdHoareTripleChecker+Invalid, 2.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 61 mSDsCounter, 64 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 122 IncrementalHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 64 mSolverCounterUnsat, 17 mSDtfsCounter, 122 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 118 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 318 ImplicationChecksByTransitivity, 10.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51occurred in iteration=4, InterpolantAutomatonStates: 47, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 8 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 19.7s InterpolantComputationTime, 103 NumberOfCodeBlocks, 103 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 94 ConstructedInterpolants, 0 QuantifiedInterpolants, 29407 SizeOfPredicates, 187 NumberOfNonLiveVariables, 330 ConjunctsInSsa, 186 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 0/188 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 11:35:46,226 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d2fa0427-e317-43a1-bd7c-e7202c769ec5/bin/uautomizer-ug76WZFUDN/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