./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_bcuvis32.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_33bac876-3cf2-448e-a2cc-a68f6a94927f/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bac876-3cf2-448e-a2cc-a68f6a94927f/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bac876-3cf2-448e-a2cc-a68f6a94927f/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bac876-3cf2-448e-a2cc-a68f6a94927f/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_bcuvis32.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bac876-3cf2-448e-a2cc-a68f6a94927f/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bac876-3cf2-448e-a2cc-a68f6a94927f/bin/utaipan-6cKwYrpEi9 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 0b778e020f927dcd69e8c93a4e5f815b351554054566b59c07b83f21be0bc1f1 --- 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 20:30:08,943 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 20:30:08,945 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 20:30:08,968 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 20:30:08,969 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 20:30:08,970 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 20:30:08,971 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 20:30:08,973 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 20:30:08,975 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 20:30:08,976 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 20:30:08,977 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 20:30:08,979 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 20:30:08,979 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 20:30:08,980 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 20:30:08,982 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 20:30:08,983 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 20:30:08,984 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 20:30:08,985 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 20:30:08,987 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 20:30:08,989 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 20:30:08,991 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 20:30:08,992 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 20:30:08,994 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 20:30:08,995 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 20:30:08,999 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 20:30:08,999 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 20:30:09,000 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 20:30:09,001 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 20:30:09,003 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 20:30:09,004 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 20:30:09,005 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 20:30:09,006 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 20:30:09,007 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 20:30:09,011 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 20:30:09,013 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 20:30:09,013 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 20:30:09,014 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 20:30:09,014 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 20:30:09,015 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 20:30:09,028 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 20:30:09,029 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 20:30:09,030 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bac876-3cf2-448e-a2cc-a68f6a94927f/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-20 20:30:09,076 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 20:30:09,076 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 20:30:09,076 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 20:30:09,077 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 20:30:09,077 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 20:30:09,077 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 20:30:09,078 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 20:30:09,078 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 20:30:09,078 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 20:30:09,078 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 20:30:09,078 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 20:30:09,079 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 20:30:09,079 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 20:30:09,079 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 20:30:09,079 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 20:30:09,079 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 20:30:09,080 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 20:30:09,080 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 20:30:09,081 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 20:30:09,081 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 20:30:09,081 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 20:30:09,081 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 20:30:09,081 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 20:30:09,081 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 20:30:09,082 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 20:30:09,082 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 20:30:09,082 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 20:30:09,082 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 20:30:09,082 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 20:30:09,083 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:30:09,083 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 20:30:09,083 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 20:30:09,083 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 20:30:09,083 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 20:30:09,084 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 20:30:09,084 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 20:30:09,084 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 20:30:09,084 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 20:30:09,084 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_33bac876-3cf2-448e-a2cc-a68f6a94927f/bin/utaipan-6cKwYrpEi9/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bac876-3cf2-448e-a2cc-a68f6a94927f/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0b778e020f927dcd69e8c93a4e5f815b351554054566b59c07b83f21be0bc1f1 [2022-11-20 20:30:09,364 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 20:30:09,436 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 20:30:09,440 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 20:30:09,441 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 20:30:09,442 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 20:30:09,443 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bac876-3cf2-448e-a2cc-a68f6a94927f/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_bcuvis32.c [2022-11-20 20:30:12,564 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 20:30:12,812 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 20:30:12,812 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bac876-3cf2-448e-a2cc-a68f6a94927f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_bcuvis32.c [2022-11-20 20:30:12,822 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bac876-3cf2-448e-a2cc-a68f6a94927f/bin/utaipan-6cKwYrpEi9/data/fb16727e6/d4ab0d7311e643948e51ce8259e4ce2c/FLAGaaa50018f [2022-11-20 20:30:12,838 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bac876-3cf2-448e-a2cc-a68f6a94927f/bin/utaipan-6cKwYrpEi9/data/fb16727e6/d4ab0d7311e643948e51ce8259e4ce2c [2022-11-20 20:30:12,841 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 20:30:12,843 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 20:30:12,844 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 20:30:12,845 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 20:30:12,849 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 20:30:12,850 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:30:12" (1/1) ... [2022-11-20 20:30:12,851 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63da7f05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:30:12, skipping insertion in model container [2022-11-20 20:30:12,852 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:30:12" (1/1) ... [2022-11-20 20:30:12,860 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 20:30:12,938 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 20:30:13,080 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_33bac876-3cf2-448e-a2cc-a68f6a94927f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_bcuvis32.c[1107,1120] [2022-11-20 20:30:13,173 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:30:13,180 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 20:30:13,191 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_33bac876-3cf2-448e-a2cc-a68f6a94927f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_bcuvis32.c[1107,1120] [2022-11-20 20:30:13,252 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:30:13,266 INFO L208 MainTranslator]: Completed translation [2022-11-20 20:30:13,268 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:30:13 WrapperNode [2022-11-20 20:30:13,273 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 20:30:13,274 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 20:30:13,274 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 20:30:13,275 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 20:30:13,283 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:30:13" (1/1) ... [2022-11-20 20:30:13,311 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:30:13" (1/1) ... [2022-11-20 20:30:13,365 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 361 [2022-11-20 20:30:13,366 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 20:30:13,367 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 20:30:13,367 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 20:30:13,367 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 20:30:13,377 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:30:13" (1/1) ... [2022-11-20 20:30:13,377 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:30:13" (1/1) ... [2022-11-20 20:30:13,382 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:30:13" (1/1) ... [2022-11-20 20:30:13,382 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:30:13" (1/1) ... [2022-11-20 20:30:13,400 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:30:13" (1/1) ... [2022-11-20 20:30:13,411 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:30:13" (1/1) ... [2022-11-20 20:30:13,416 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:30:13" (1/1) ... [2022-11-20 20:30:13,418 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:30:13" (1/1) ... [2022-11-20 20:30:13,424 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 20:30:13,430 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 20:30:13,430 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 20:30:13,431 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 20:30:13,431 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:30:13" (1/1) ... [2022-11-20 20:30:13,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:30:13,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bac876-3cf2-448e-a2cc-a68f6a94927f/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:30:13,482 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bac876-3cf2-448e-a2cc-a68f6a94927f/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 20:30:13,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bac876-3cf2-448e-a2cc-a68f6a94927f/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 20:30:13,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 20:30:13,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 20:30:13,743 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 20:30:13,745 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 20:30:14,710 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 20:30:14,738 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 20:30:14,742 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 20:30:14,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:30:14 BoogieIcfgContainer [2022-11-20 20:30:14,747 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 20:30:14,752 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 20:30:14,752 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 20:30:14,755 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 20:30:14,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 08:30:12" (1/3) ... [2022-11-20 20:30:14,758 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fde4a6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:30:14, skipping insertion in model container [2022-11-20 20:30:14,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:30:13" (2/3) ... [2022-11-20 20:30:14,760 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fde4a6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:30:14, skipping insertion in model container [2022-11-20 20:30:14,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:30:14" (3/3) ... [2022-11-20 20:30:14,773 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_QF_BV_bcuvis32.c [2022-11-20 20:30:14,800 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 20:30:14,802 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 20:30:14,874 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 20:30:14,882 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@74172799, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 20:30:14,883 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 20:30:14,888 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:30:14,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-20 20:30:14,895 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:30:14,896 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-20 20:30:14,897 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:30:14,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:30:14,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2022-11-20 20:30:14,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:30:14,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082083600] [2022-11-20 20:30:14,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:30:14,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:30:15,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 20:30:15,257 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 20:30:15,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 20:30:15,379 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-20 20:30:15,381 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 20:30:15,383 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-20 20:30:15,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 20:30:15,391 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-20 20:30:15,396 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 20:30:15,434 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-20 20:30:15,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 08:30:15 BoogieIcfgContainer [2022-11-20 20:30:15,449 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 20:30:15,451 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 20:30:15,451 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 20:30:15,452 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 20:30:15,453 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:30:14" (3/4) ... [2022-11-20 20:30:15,456 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-20 20:30:15,456 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 20:30:15,458 INFO L158 Benchmark]: Toolchain (without parser) took 2615.53ms. Allocated memory was 132.1MB in the beginning and 184.5MB in the end (delta: 52.4MB). Free memory was 67.8MB in the beginning and 75.8MB in the end (delta: -8.0MB). Peak memory consumption was 45.6MB. Max. memory is 16.1GB. [2022-11-20 20:30:15,459 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 132.1MB. Free memory was 107.9MB in the beginning and 107.8MB in the end (delta: 167.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 20:30:15,460 INFO L158 Benchmark]: CACSL2BoogieTranslator took 428.86ms. Allocated memory was 132.1MB in the beginning and 184.5MB in the end (delta: 52.4MB). Free memory was 67.6MB in the beginning and 140.1MB in the end (delta: -72.5MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. [2022-11-20 20:30:15,461 INFO L158 Benchmark]: Boogie Procedure Inliner took 91.87ms. Allocated memory is still 184.5MB. Free memory was 140.1MB in the beginning and 137.1MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 20:30:15,466 INFO L158 Benchmark]: Boogie Preprocessor took 59.24ms. Allocated memory is still 184.5MB. Free memory was 137.1MB in the beginning and 134.7MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 20:30:15,467 INFO L158 Benchmark]: RCFGBuilder took 1316.93ms. Allocated memory is still 184.5MB. Free memory was 134.7MB in the beginning and 104.1MB in the end (delta: 30.7MB). Peak memory consumption was 56.9MB. Max. memory is 16.1GB. [2022-11-20 20:30:15,468 INFO L158 Benchmark]: TraceAbstraction took 698.05ms. Allocated memory is still 184.5MB. Free memory was 103.1MB in the beginning and 76.8MB in the end (delta: 26.2MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2022-11-20 20:30:15,469 INFO L158 Benchmark]: Witness Printer took 6.15ms. Allocated memory is still 184.5MB. Free memory was 76.8MB in the beginning and 75.8MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 20:30:15,476 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 132.1MB. Free memory was 107.9MB in the beginning and 107.8MB in the end (delta: 167.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 428.86ms. Allocated memory was 132.1MB in the beginning and 184.5MB in the end (delta: 52.4MB). Free memory was 67.6MB in the beginning and 140.1MB in the end (delta: -72.5MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 91.87ms. Allocated memory is still 184.5MB. Free memory was 140.1MB in the beginning and 137.1MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 59.24ms. Allocated memory is still 184.5MB. Free memory was 137.1MB in the beginning and 134.7MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1316.93ms. Allocated memory is still 184.5MB. Free memory was 134.7MB in the beginning and 104.1MB in the end (delta: 30.7MB). Peak memory consumption was 56.9MB. Max. memory is 16.1GB. * TraceAbstraction took 698.05ms. Allocated memory is still 184.5MB. Free memory was 103.1MB in the beginning and 76.8MB in the end (delta: 26.2MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Witness Printer took 6.15ms. Allocated memory is still 184.5MB. Free memory was 76.8MB in the beginning and 75.8MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseComplement at line 145, overapproximation of bitwiseOr at line 143, overapproximation of bitwiseAnd at line 109. Possible FailurePath: [L25] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 32); [L26] const SORT_1 msb_SORT_1 = (SORT_1)1 << (32 - 1); [L28] const SORT_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 1); [L29] const SORT_3 msb_SORT_3 = (SORT_3)1 << (1 - 1); [L31] const SORT_16 mask_SORT_16 = (SORT_16)-1 >> (sizeof(SORT_16) * 8 - 2); [L32] const SORT_16 msb_SORT_16 = (SORT_16)1 << (2 - 1); [L34] const SORT_59 mask_SORT_59 = (SORT_59)-1 >> (sizeof(SORT_59) * 8 - 3); [L35] const SORT_59 msb_SORT_59 = (SORT_59)1 << (3 - 1); [L37] const SORT_16 var_17 = 0; [L38] const SORT_16 var_20 = 3; [L39] const SORT_3 var_22 = 1; [L40] const SORT_3 var_36 = 0; [L41] const SORT_16 var_77 = 2; [L42] const SORT_16 var_80 = 1; [L43] const SORT_59 var_92 = 0; [L45] SORT_1 input_2; [L46] SORT_3 input_4; [L47] SORT_1 input_5; [L48] SORT_3 input_6; [L49] SORT_3 input_7; [L50] SORT_3 input_8; [L51] SORT_1 input_9; [L52] SORT_3 input_10; [L53] SORT_3 input_11; [L54] SORT_1 input_12; [L55] SORT_3 input_13; [L56] SORT_3 input_14; [L57] SORT_3 input_15; [L58] SORT_1 input_32; [L59] SORT_3 input_34; [L60] SORT_1 input_39; [L61] SORT_3 input_41; [L62] SORT_1 input_47; [L63] SORT_1 input_53; [L64] SORT_1 input_55; [L65] SORT_1 input_57; [L66] SORT_59 input_60; [L67] SORT_59 input_66; [L68] SORT_1 input_69; [L69] SORT_3 input_73; [L71] SORT_16 state_18 = __VERIFIER_nondet_uchar() & mask_SORT_16; [L72] SORT_3 state_23 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L73] SORT_3 state_37 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L74] SORT_3 state_43 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L75] SORT_3 state_45 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L76] SORT_3 state_49 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L77] SORT_3 state_51 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L78] SORT_3 state_62 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L79] SORT_3 state_64 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L80] SORT_3 state_71 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L82] SORT_16 init_19_arg_1 = var_17; [L83] state_18 = init_19_arg_1 [L84] SORT_3 init_24_arg_1 = var_22; [L85] state_23 = init_24_arg_1 [L86] SORT_3 init_38_arg_1 = var_36; [L87] state_37 = init_38_arg_1 [L88] SORT_3 init_44_arg_1 = var_36; [L89] state_43 = init_44_arg_1 [L90] SORT_3 init_46_arg_1 = var_36; [L91] state_45 = init_46_arg_1 [L92] SORT_3 init_50_arg_1 = var_36; [L93] state_49 = init_50_arg_1 [L94] SORT_3 init_52_arg_1 = var_36; [L95] state_51 = init_52_arg_1 [L96] SORT_3 init_63_arg_1 = var_36; [L97] state_62 = init_63_arg_1 [L98] SORT_3 init_65_arg_1 = var_36; [L99] state_64 = init_65_arg_1 [L100] SORT_3 init_72_arg_1 = var_36; [L101] state_71 = init_72_arg_1 VAL [init_19_arg_1=0, init_24_arg_1=1, init_38_arg_1=0, init_44_arg_1=0, init_46_arg_1=0, init_50_arg_1=0, init_52_arg_1=0, init_63_arg_1=0, init_65_arg_1=0, init_72_arg_1=0, mask_SORT_1=4294967295, mask_SORT_16=3, mask_SORT_3=1, mask_SORT_59=7, msb_SORT_1=2147483648, msb_SORT_16=2, msb_SORT_3=1, msb_SORT_59=4, state_18=0, state_23=1, state_37=0, state_43=0, state_45=0, state_49=0, state_51=0, state_62=0, state_64=0, state_71=0, var_17=0, var_20=3, var_22=1, var_36=0, var_77=2, var_80=1, var_92=0] [L104] input_2 = __VERIFIER_nondet_uint() [L105] input_4 = __VERIFIER_nondet_uchar() [L106] input_5 = __VERIFIER_nondet_uint() [L107] input_6 = __VERIFIER_nondet_uchar() [L108] input_7 = __VERIFIER_nondet_uchar() [L109] input_7 = input_7 & mask_SORT_3 [L110] input_8 = __VERIFIER_nondet_uchar() [L111] input_8 = input_8 & mask_SORT_3 [L112] input_9 = __VERIFIER_nondet_uint() [L113] input_10 = __VERIFIER_nondet_uchar() [L114] input_10 = input_10 & mask_SORT_3 [L115] input_11 = __VERIFIER_nondet_uchar() [L116] input_11 = input_11 & mask_SORT_3 [L117] input_12 = __VERIFIER_nondet_uint() [L118] input_13 = __VERIFIER_nondet_uchar() [L119] input_14 = __VERIFIER_nondet_uchar() [L120] input_15 = __VERIFIER_nondet_uchar() [L121] input_32 = __VERIFIER_nondet_uint() [L122] input_34 = __VERIFIER_nondet_uchar() [L123] input_39 = __VERIFIER_nondet_uint() [L124] input_41 = __VERIFIER_nondet_uchar() [L125] input_47 = __VERIFIER_nondet_uint() [L126] input_53 = __VERIFIER_nondet_uint() [L127] input_55 = __VERIFIER_nondet_uint() [L128] input_57 = __VERIFIER_nondet_uint() [L129] input_60 = __VERIFIER_nondet_uchar() [L130] input_66 = __VERIFIER_nondet_uchar() [L131] input_69 = __VERIFIER_nondet_uint() [L132] input_73 = __VERIFIER_nondet_uchar() [L135] SORT_16 var_21_arg_0 = state_18; [L136] SORT_16 var_21_arg_1 = var_20; [L137] SORT_3 var_21 = var_21_arg_0 != var_21_arg_1; [L138] SORT_3 var_25_arg_0 = state_23; [L139] SORT_3 var_25_arg_1 = var_22; [L140] SORT_3 var_25 = var_25_arg_0 == var_25_arg_1; [L141] SORT_3 var_26_arg_0 = var_21; [L142] SORT_3 var_26_arg_1 = var_25; [L143] SORT_3 var_26 = var_26_arg_0 | var_26_arg_1; [L144] SORT_3 var_29_arg_0 = var_26; [L145] SORT_3 var_29 = ~var_29_arg_0; [L146] SORT_3 var_30_arg_0 = var_22; [L147] SORT_3 var_30_arg_1 = var_29; [L148] SORT_3 var_30 = var_30_arg_0 & var_30_arg_1; [L149] var_30 = var_30 & mask_SORT_3 [L150] SORT_3 bad_31_arg_0 = var_30; [L151] CALL __VERIFIER_assert(!(bad_31_arg_0)) [L20] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L20] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-20 20:30:15,501 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bac876-3cf2-448e-a2cc-a68f6a94927f/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bac876-3cf2-448e-a2cc-a68f6a94927f/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bac876-3cf2-448e-a2cc-a68f6a94927f/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bac876-3cf2-448e-a2cc-a68f6a94927f/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bac876-3cf2-448e-a2cc-a68f6a94927f/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_bcuvis32.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bac876-3cf2-448e-a2cc-a68f6a94927f/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bac876-3cf2-448e-a2cc-a68f6a94927f/bin/utaipan-6cKwYrpEi9 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 0b778e020f927dcd69e8c93a4e5f815b351554054566b59c07b83f21be0bc1f1 --- 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 20:30:18,254 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 20:30:18,257 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 20:30:18,279 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 20:30:18,280 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 20:30:18,281 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 20:30:18,282 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 20:30:18,284 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 20:30:18,286 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 20:30:18,288 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 20:30:18,289 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 20:30:18,290 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 20:30:18,291 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 20:30:18,292 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 20:30:18,293 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 20:30:18,294 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 20:30:18,296 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 20:30:18,297 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 20:30:18,299 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 20:30:18,301 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 20:30:18,303 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 20:30:18,304 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 20:30:18,306 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 20:30:18,307 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 20:30:18,311 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 20:30:18,311 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 20:30:18,312 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 20:30:18,313 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 20:30:18,314 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 20:30:18,315 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 20:30:18,315 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 20:30:18,316 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 20:30:18,317 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 20:30:18,318 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 20:30:18,319 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 20:30:18,320 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 20:30:18,320 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 20:30:18,321 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 20:30:18,321 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 20:30:18,322 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 20:30:18,323 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 20:30:18,324 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bac876-3cf2-448e-a2cc-a68f6a94927f/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-20 20:30:18,348 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 20:30:18,349 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 20:30:18,349 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 20:30:18,349 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 20:30:18,350 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 20:30:18,350 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 20:30:18,351 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 20:30:18,351 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 20:30:18,351 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 20:30:18,351 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 20:30:18,352 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 20:30:18,352 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 20:30:18,353 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 20:30:18,353 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 20:30:18,353 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 20:30:18,354 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 20:30:18,354 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 20:30:18,354 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 20:30:18,354 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 20:30:18,355 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 20:30:18,355 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 20:30:18,355 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 20:30:18,355 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 20:30:18,356 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 20:30:18,356 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 20:30:18,356 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 20:30:18,356 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:30:18,357 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 20:30:18,357 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 20:30:18,357 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 20:30:18,357 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-20 20:30:18,358 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 20:30:18,358 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 20:30:18,358 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 20:30:18,358 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 20:30:18,358 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_33bac876-3cf2-448e-a2cc-a68f6a94927f/bin/utaipan-6cKwYrpEi9/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bac876-3cf2-448e-a2cc-a68f6a94927f/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0b778e020f927dcd69e8c93a4e5f815b351554054566b59c07b83f21be0bc1f1 [2022-11-20 20:30:18,778 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 20:30:18,807 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 20:30:18,810 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 20:30:18,811 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 20:30:18,811 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 20:30:18,813 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bac876-3cf2-448e-a2cc-a68f6a94927f/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_bcuvis32.c [2022-11-20 20:30:21,959 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 20:30:22,239 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 20:30:22,239 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bac876-3cf2-448e-a2cc-a68f6a94927f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_bcuvis32.c [2022-11-20 20:30:22,254 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bac876-3cf2-448e-a2cc-a68f6a94927f/bin/utaipan-6cKwYrpEi9/data/98eb37f01/c6e4542a087549b8b15d3d95731c3398/FLAG23656bffd [2022-11-20 20:30:22,273 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bac876-3cf2-448e-a2cc-a68f6a94927f/bin/utaipan-6cKwYrpEi9/data/98eb37f01/c6e4542a087549b8b15d3d95731c3398 [2022-11-20 20:30:22,276 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 20:30:22,282 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 20:30:22,286 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 20:30:22,286 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 20:30:22,290 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 20:30:22,291 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:30:22" (1/1) ... [2022-11-20 20:30:22,292 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60584695 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:30:22, skipping insertion in model container [2022-11-20 20:30:22,292 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:30:22" (1/1) ... [2022-11-20 20:30:22,301 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 20:30:22,333 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 20:30:22,556 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_33bac876-3cf2-448e-a2cc-a68f6a94927f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_bcuvis32.c[1107,1120] [2022-11-20 20:30:22,681 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:30:22,687 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 20:30:22,725 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_33bac876-3cf2-448e-a2cc-a68f6a94927f/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.vis_QF_BV_bcuvis32.c[1107,1120] [2022-11-20 20:30:22,778 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:30:22,792 INFO L208 MainTranslator]: Completed translation [2022-11-20 20:30:22,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:30:22 WrapperNode [2022-11-20 20:30:22,793 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 20:30:22,794 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 20:30:22,794 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 20:30:22,795 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 20:30:22,803 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:30:22" (1/1) ... [2022-11-20 20:30:22,826 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:30:22" (1/1) ... [2022-11-20 20:30:22,889 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 361 [2022-11-20 20:30:22,890 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 20:30:22,891 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 20:30:22,891 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 20:30:22,892 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 20:30:22,902 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:30:22" (1/1) ... [2022-11-20 20:30:22,903 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:30:22" (1/1) ... [2022-11-20 20:30:22,917 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:30:22" (1/1) ... [2022-11-20 20:30:22,925 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:30:22" (1/1) ... [2022-11-20 20:30:22,935 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:30:22" (1/1) ... [2022-11-20 20:30:22,957 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:30:22" (1/1) ... [2022-11-20 20:30:22,960 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:30:22" (1/1) ... [2022-11-20 20:30:22,962 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:30:22" (1/1) ... [2022-11-20 20:30:22,966 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 20:30:22,976 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 20:30:22,977 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 20:30:22,977 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 20:30:22,978 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:30:22" (1/1) ... [2022-11-20 20:30:22,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:30:23,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bac876-3cf2-448e-a2cc-a68f6a94927f/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:30:23,019 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bac876-3cf2-448e-a2cc-a68f6a94927f/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 20:30:23,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bac876-3cf2-448e-a2cc-a68f6a94927f/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 20:30:23,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 20:30:23,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 20:30:23,251 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 20:30:23,259 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 20:30:23,716 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 20:30:23,723 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 20:30:23,724 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 20:30:23,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:30:23 BoogieIcfgContainer [2022-11-20 20:30:23,726 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 20:30:23,728 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 20:30:23,728 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 20:30:23,732 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 20:30:23,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 08:30:22" (1/3) ... [2022-11-20 20:30:23,733 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@340fc9bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:30:23, skipping insertion in model container [2022-11-20 20:30:23,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:30:22" (2/3) ... [2022-11-20 20:30:23,734 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@340fc9bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:30:23, skipping insertion in model container [2022-11-20 20:30:23,734 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:30:23" (3/3) ... [2022-11-20 20:30:23,736 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_QF_BV_bcuvis32.c [2022-11-20 20:30:23,757 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 20:30:23,757 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 20:30:23,825 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 20:30:23,835 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@297bddd1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 20:30:23,836 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 20:30:23,842 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 20:30:23,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 20:30:23,850 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:30:23,851 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-20 20:30:23,851 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:30:23,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:30:23,864 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-20 20:30:23,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 20:30:23,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2027037492] [2022-11-20 20:30:23,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:30:23,884 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 20:30:23,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bac876-3cf2-448e-a2cc-a68f6a94927f/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 20:30:23,893 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bac876-3cf2-448e-a2cc-a68f6a94927f/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 20:30:23,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bac876-3cf2-448e-a2cc-a68f6a94927f/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-20 20:30:24,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:30:24,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 20:30:24,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:30:24,407 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 20:30:24,408 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:30:24,409 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 20:30:24,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2027037492] [2022-11-20 20:30:24,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2027037492] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:30:24,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:30:24,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 20:30:24,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14222363] [2022-11-20 20:30:24,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:30:24,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 20:30:24,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 20:30:24,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 20:30:24,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 20:30:24,475 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 20:30:24,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:30:24,572 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-11-20 20:30:24,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 20:30:24,575 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 20:30:24,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:30:24,585 INFO L225 Difference]: With dead ends: 20 [2022-11-20 20:30:24,585 INFO L226 Difference]: Without dead ends: 11 [2022-11-20 20:30:24,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:30:24,593 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:30:24,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 20:30:24,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-20 20:30:24,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-11-20 20:30:24,630 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 20:30:24,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-20 20:30:24,633 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-11-20 20:30:24,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:30:24,634 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-20 20:30:24,635 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 20:30:24,635 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-20 20:30:24,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-20 20:30:24,636 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:30:24,636 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-20 20:30:24,664 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bac876-3cf2-448e-a2cc-a68f6a94927f/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-20 20:30:24,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bac876-3cf2-448e-a2cc-a68f6a94927f/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 20:30:24,858 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:30:24,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:30:24,859 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-11-20 20:30:24,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 20:30:24,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1868593824] [2022-11-20 20:30:24,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:30:24,861 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 20:30:24,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bac876-3cf2-448e-a2cc-a68f6a94927f/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 20:30:24,863 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bac876-3cf2-448e-a2cc-a68f6a94927f/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 20:30:24,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bac876-3cf2-448e-a2cc-a68f6a94927f/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-20 20:30:25,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:30:25,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-20 20:30:25,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:30:25,450 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 20:30:25,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:30:26,061 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 20:30:26,062 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 20:30:26,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1868593824] [2022-11-20 20:30:26,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1868593824] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:30:26,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1078041199] [2022-11-20 20:30:26,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:30:26,069 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 20:30:26,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bac876-3cf2-448e-a2cc-a68f6a94927f/bin/utaipan-6cKwYrpEi9/cvc4 [2022-11-20 20:30:26,073 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bac876-3cf2-448e-a2cc-a68f6a94927f/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 20:30:26,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bac876-3cf2-448e-a2cc-a68f6a94927f/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-11-20 20:30:26,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:30:26,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-20 20:30:26,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:30:26,582 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 20:30:26,583 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:30:26,987 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 20:30:26,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1078041199] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:30:26,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958776037] [2022-11-20 20:30:26,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:30:26,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:30:26,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bac876-3cf2-448e-a2cc-a68f6a94927f/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:30:27,000 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bac876-3cf2-448e-a2cc-a68f6a94927f/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:30:27,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bac876-3cf2-448e-a2cc-a68f6a94927f/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 20:30:27,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:30:27,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-20 20:30:27,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:30:27,350 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 20:30:27,350 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:30:27,711 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 20:30:27,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1958776037] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:30:27,712 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-20 20:30:27,712 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 6, 6] total 14 [2022-11-20 20:30:27,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519059110] [2022-11-20 20:30:27,714 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-20 20:30:27,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 20:30:27,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 20:30:27,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 20:30:27,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2022-11-20 20:30:27,716 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:30:27,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:30:27,878 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-11-20 20:30:27,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 20:30:27,879 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-20 20:30:27,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:30:27,880 INFO L225 Difference]: With dead ends: 16 [2022-11-20 20:30:27,880 INFO L226 Difference]: Without dead ends: 14 [2022-11-20 20:30:27,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2022-11-20 20:30:27,882 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 17 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 15 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:30:27,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 29 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 15 Unchecked, 0.1s Time] [2022-11-20 20:30:27,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-20 20:30:27,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2022-11-20 20:30:27,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:30:27,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-11-20 20:30:27,887 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2022-11-20 20:30:27,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:30:27,888 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-11-20 20:30:27,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:30:27,888 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-11-20 20:30:27,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 20:30:27,889 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:30:27,889 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-20 20:30:27,899 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bac876-3cf2-448e-a2cc-a68f6a94927f/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2022-11-20 20:30:28,098 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bac876-3cf2-448e-a2cc-a68f6a94927f/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 20:30:28,301 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bac876-3cf2-448e-a2cc-a68f6a94927f/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-11-20 20:30:28,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bac876-3cf2-448e-a2cc-a68f6a94927f/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bac876-3cf2-448e-a2cc-a68f6a94927f/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bac876-3cf2-448e-a2cc-a68f6a94927f/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 20:30:28,494 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:30:28,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:30:28,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1020920393, now seen corresponding path program 2 times [2022-11-20 20:30:28,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 20:30:28,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [371935596] [2022-11-20 20:30:28,496 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 20:30:28,496 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 20:30:28,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bac876-3cf2-448e-a2cc-a68f6a94927f/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 20:30:28,498 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bac876-3cf2-448e-a2cc-a68f6a94927f/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 20:30:28,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bac876-3cf2-448e-a2cc-a68f6a94927f/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-20 20:30:28,795 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 20:30:28,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 20:30:28,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 56 conjunts are in the unsatisfiable core [2022-11-20 20:30:28,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:30:29,341 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:30:29,341 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:30:31,488 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:30:31,488 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 20:30:31,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [371935596] [2022-11-20 20:30:31,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [371935596] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:30:31,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1376450567] [2022-11-20 20:30:31,489 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 20:30:31,490 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 20:30:31,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bac876-3cf2-448e-a2cc-a68f6a94927f/bin/utaipan-6cKwYrpEi9/cvc4 [2022-11-20 20:30:31,491 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bac876-3cf2-448e-a2cc-a68f6a94927f/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 20:30:31,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bac876-3cf2-448e-a2cc-a68f6a94927f/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-11-20 20:30:32,010 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 20:30:32,010 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 20:30:32,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 63 conjunts are in the unsatisfiable core [2022-11-20 20:30:32,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:30:32,310 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:30:32,310 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:30:33,671 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:30:33,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1376450567] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:30:33,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202106101] [2022-11-20 20:30:33,672 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 20:30:33,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:30:33,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bac876-3cf2-448e-a2cc-a68f6a94927f/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:30:33,674 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bac876-3cf2-448e-a2cc-a68f6a94927f/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:30:33,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bac876-3cf2-448e-a2cc-a68f6a94927f/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 20:30:33,944 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 20:30:33,944 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 20:30:33,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 61 conjunts are in the unsatisfiable core [2022-11-20 20:30:33,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:30:34,305 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:30:34,306 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:30:35,308 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:30:35,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [202106101] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:30:35,309 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-20 20:30:35,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6, 6, 7, 7] total 22 [2022-11-20 20:30:35,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184471191] [2022-11-20 20:30:35,309 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-20 20:30:35,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-20 20:30:35,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 20:30:35,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-20 20:30:35,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=339, Unknown=0, NotChecked=0, Total=462 [2022-11-20 20:30:35,311 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 22 states, 22 states have (on average 2.0) internal successors, (44), 22 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:30:35,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:30:35,671 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2022-11-20 20:30:35,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 20:30:35,672 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.0) internal successors, (44), 22 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-20 20:30:35,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:30:35,672 INFO L225 Difference]: With dead ends: 17 [2022-11-20 20:30:35,672 INFO L226 Difference]: Without dead ends: 15 [2022-11-20 20:30:35,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=241, Invalid=571, Unknown=0, NotChecked=0, Total=812 [2022-11-20 20:30:35,674 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 7 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 25 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 20:30:35,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 27 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 25 Unchecked, 0.0s Time] [2022-11-20 20:30:35,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-11-20 20:30:35,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-11-20 20:30:35,679 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 20:30:35,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-11-20 20:30:35,679 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 11 [2022-11-20 20:30:35,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:30:35,680 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-11-20 20:30:35,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.0) internal successors, (44), 22 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:30:35,680 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-11-20 20:30:35,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-20 20:30:35,681 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:30:35,681 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1] [2022-11-20 20:30:35,692 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bac876-3cf2-448e-a2cc-a68f6a94927f/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2022-11-20 20:30:35,887 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bac876-3cf2-448e-a2cc-a68f6a94927f/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-20 20:30:36,092 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bac876-3cf2-448e-a2cc-a68f6a94927f/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-11-20 20:30:36,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bac876-3cf2-448e-a2cc-a68f6a94927f/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bac876-3cf2-448e-a2cc-a68f6a94927f/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bac876-3cf2-448e-a2cc-a68f6a94927f/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 20:30:36,283 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:30:36,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:30:36,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1580781475, now seen corresponding path program 3 times [2022-11-20 20:30:36,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 20:30:36,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [913096332] [2022-11-20 20:30:36,285 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 20:30:36,286 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 20:30:36,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bac876-3cf2-448e-a2cc-a68f6a94927f/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 20:30:36,289 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bac876-3cf2-448e-a2cc-a68f6a94927f/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 20:30:36,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bac876-3cf2-448e-a2cc-a68f6a94927f/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-20 20:30:36,606 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-20 20:30:36,606 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 20:30:36,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 106 conjunts are in the unsatisfiable core [2022-11-20 20:30:36,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:30:42,140 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 20:30:42,141 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:30:49,305 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 20:30:49,305 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 20:30:49,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [913096332] [2022-11-20 20:30:49,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [913096332] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:30:49,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1845292004] [2022-11-20 20:30:49,306 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 20:30:49,306 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 20:30:49,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bac876-3cf2-448e-a2cc-a68f6a94927f/bin/utaipan-6cKwYrpEi9/cvc4 [2022-11-20 20:30:49,310 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bac876-3cf2-448e-a2cc-a68f6a94927f/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 20:30:49,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bac876-3cf2-448e-a2cc-a68f6a94927f/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2022-11-20 20:30:49,876 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-20 20:30:49,876 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 20:30:49,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 106 conjunts are in the unsatisfiable core [2022-11-20 20:30:49,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:30:52,901 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 20:30:52,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:31:02,825 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 20:31:02,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1845292004] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:31:02,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991190153] [2022-11-20 20:31:02,826 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 20:31:02,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:31:02,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bac876-3cf2-448e-a2cc-a68f6a94927f/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:31:02,828 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bac876-3cf2-448e-a2cc-a68f6a94927f/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:31:02,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bac876-3cf2-448e-a2cc-a68f6a94927f/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-20 20:31:03,067 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-20 20:31:03,068 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 20:31:03,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 106 conjunts are in the unsatisfiable core [2022-11-20 20:31:03,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:31:05,901 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 20:31:05,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:31:09,283 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 20:31:09,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [991190153] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:31:09,283 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-20 20:31:09,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9, 8, 9, 8] total 23 [2022-11-20 20:31:09,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306446702] [2022-11-20 20:31:09,284 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-20 20:31:09,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 20:31:09,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 20:31:09,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 20:31:09,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2022-11-20 20:31:09,286 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 23 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:31:09,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:31:09,572 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2022-11-20 20:31:09,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 20:31:09,572 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-20 20:31:09,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:31:09,573 INFO L225 Difference]: With dead ends: 15 [2022-11-20 20:31:09,573 INFO L226 Difference]: Without dead ends: 0 [2022-11-20 20:31:09,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 50 SyntacticMatches, 9 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=190, Invalid=460, Unknown=0, NotChecked=0, Total=650 [2022-11-20 20:31:09,574 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 15 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 16 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 20:31:09,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 12 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 16 Unchecked, 0.0s Time] [2022-11-20 20:31:09,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-20 20:31:09,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-20 20:31:09,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:31:09,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-20 20:31:09,576 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2022-11-20 20:31:09,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:31:09,576 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 20:31:09,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:31:09,577 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-20 20:31:09,577 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-20 20:31:09,580 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-20 20:31:09,589 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bac876-3cf2-448e-a2cc-a68f6a94927f/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2022-11-20 20:31:09,789 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bac876-3cf2-448e-a2cc-a68f6a94927f/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-11-20 20:31:09,994 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bac876-3cf2-448e-a2cc-a68f6a94927f/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-20 20:31:10,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bac876-3cf2-448e-a2cc-a68f6a94927f/bin/utaipan-6cKwYrpEi9/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bac876-3cf2-448e-a2cc-a68f6a94927f/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bac876-3cf2-448e-a2cc-a68f6a94927f/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 20:31:10,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-20 20:31:10,382 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-20 20:31:10,382 INFO L895 garLoopResultBuilder]: At program point L102-2(lines 102 351) the Hoare annotation is: (let ((.cse0 (= (_ bv3 8) |ULTIMATE.start_main_~mask_SORT_16~0#1|)) (.cse1 (= (_ bv1 8) |ULTIMATE.start_main_~var_22~0#1|)) (.cse2 (= |ULTIMATE.start_main_~var_20~0#1| (_ bv3 8))) (.cse3 (= (_ bv1 8) |ULTIMATE.start_main_~mask_SORT_3~0#1|))) (or (and .cse0 .cse1 (= |ULTIMATE.start_main_~var_36~0#1| |ULTIMATE.start_main_~state_51~0#1|) (= |ULTIMATE.start_main_~var_22~0#1| |ULTIMATE.start_main_~state_23~0#1|) (= (_ bv0 8) |ULTIMATE.start_main_~state_45~0#1|) .cse2 (= |ULTIMATE.start_main_~state_62~0#1| |ULTIMATE.start_main_~state_45~0#1|) (= |ULTIMATE.start_main_~var_17~0#1| |ULTIMATE.start_main_~state_18~0#1|) (= (_ bv0 8) |ULTIMATE.start_main_~state_18~0#1|) (= |ULTIMATE.start_main_~var_36~0#1| (_ bv0 8)) .cse3) (let ((.cse4 ((_ zero_extend 24) |ULTIMATE.start_main_~mask_SORT_3~0#1|))) (and .cse0 .cse1 (not (= |ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv0 32))) (= |ULTIMATE.start_main_~var_17~0#1| (_ bv0 8)) (exists ((|ULTIMATE.start_main_~var_130_arg_2~0#1| (_ BitVec 8))) (= ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |ULTIMATE.start_main_~var_130_arg_2~0#1|))) .cse4)) |ULTIMATE.start_main_~state_49~0#1|)) .cse2 (exists ((|ULTIMATE.start_main_~var_116_arg_2~0#1| (_ BitVec 8))) (= ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |ULTIMATE.start_main_~var_116_arg_2~0#1|))) .cse4)) |ULTIMATE.start_main_~state_23~0#1|)) (exists ((|ULTIMATE.start_main_~var_107_arg_2~0#1| (_ BitVec 8))) (= ((_ extract 7 0) (bvand ((_ zero_extend 24) |ULTIMATE.start_main_~mask_SORT_16~0#1|) ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |ULTIMATE.start_main_~var_107_arg_2~0#1|))))) |ULTIMATE.start_main_~state_18~0#1|)) .cse3 (or (= ((_ zero_extend 24) |ULTIMATE.start_main_~state_23~0#1|) ((_ zero_extend 24) |ULTIMATE.start_main_~var_22~0#1|)) (not (= ((_ zero_extend 24) |ULTIMATE.start_main_~var_20~0#1|) ((_ zero_extend 24) |ULTIMATE.start_main_~state_18~0#1|)))))))) [2022-11-20 20:31:10,383 INFO L899 garLoopResultBuilder]: For program point L102-3(lines 102 351) no Hoare annotation was computed. [2022-11-20 20:31:10,383 INFO L895 garLoopResultBuilder]: At program point L352(lines 22 353) the Hoare annotation is: false [2022-11-20 20:31:10,383 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-20 20:31:10,383 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-20 20:31:10,383 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-20 20:31:10,383 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 20) no Hoare annotation was computed. [2022-11-20 20:31:10,384 INFO L899 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed. [2022-11-20 20:31:10,384 INFO L899 garLoopResultBuilder]: For program point L20-1(line 20) no Hoare annotation was computed. [2022-11-20 20:31:10,384 INFO L899 garLoopResultBuilder]: For program point L20-3(line 20) no Hoare annotation was computed. [2022-11-20 20:31:10,387 INFO L444 BasicCegarLoop]: Path program histogram: [3, 1] [2022-11-20 20:31:10,390 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 20:31:10,404 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~var_130_arg_2~0#1,QUANTIFIED] [2022-11-20 20:31:10,409 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~var_116_arg_2~0#1,QUANTIFIED] [2022-11-20 20:31:10,409 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~var_107_arg_2~0#1,QUANTIFIED] [2022-11-20 20:31:10,415 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~var_130_arg_2~0#1,QUANTIFIED] [2022-11-20 20:31:10,418 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~var_116_arg_2~0#1,QUANTIFIED] [2022-11-20 20:31:10,418 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~var_107_arg_2~0#1,QUANTIFIED] [2022-11-20 20:31:10,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 08:31:10 BoogieIcfgContainer [2022-11-20 20:31:10,420 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 20:31:10,420 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 20:31:10,420 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 20:31:10,421 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 20:31:10,421 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:30:23" (3/4) ... [2022-11-20 20:31:10,424 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 20:31:10,452 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2022-11-20 20:31:10,452 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-20 20:31:10,453 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 20:31:10,483 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((((3bv8 == mask_SORT_16 && 1bv8 == var_22) && var_36 == state_51) && var_22 == state_23) && 0bv8 == state_45) && var_20 == 3bv8) && state_62 == state_45) && var_17 == state_18) && 0bv8 == state_18) && var_36 == 0bv8) && 1bv8 == mask_SORT_3) || (((((((((3bv8 == mask_SORT_16 && 1bv8 == var_22) && !(cond == 0bv32)) && var_17 == 0bv8) && (\exists ULTIMATE.start_main_~var_130_arg_2~0#1 : bv8 :: ~bvand32(~zero_extendFrom8To32(~zero_extendFrom8To32(ULTIMATE.start_main_~var_130_arg_2~0#1)[7:0]), ~zero_extendFrom8To32(mask_SORT_3))[7:0] == state_49)) && var_20 == 3bv8) && (\exists ULTIMATE.start_main_~var_116_arg_2~0#1 : bv8 :: ~bvand32(~zero_extendFrom8To32(~zero_extendFrom8To32(ULTIMATE.start_main_~var_116_arg_2~0#1)[7:0]), ~zero_extendFrom8To32(mask_SORT_3))[7:0] == state_23)) && (\exists ULTIMATE.start_main_~var_107_arg_2~0#1 : bv8 :: ~bvand32(~zero_extendFrom8To32(mask_SORT_16), ~zero_extendFrom8To32(~zero_extendFrom8To32(ULTIMATE.start_main_~var_107_arg_2~0#1)[7:0]))[7:0] == state_18)) && 1bv8 == mask_SORT_3) && (~zero_extendFrom8To32(state_23) == ~zero_extendFrom8To32(var_22) || !(~zero_extendFrom8To32(var_20) == ~zero_extendFrom8To32(state_18)))) [2022-11-20 20:31:10,521 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bac876-3cf2-448e-a2cc-a68f6a94927f/bin/utaipan-6cKwYrpEi9/witness.graphml [2022-11-20 20:31:10,521 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 20:31:10,522 INFO L158 Benchmark]: Toolchain (without parser) took 48240.22ms. Allocated memory was 67.1MB in the beginning and 413.1MB in the end (delta: 346.0MB). Free memory was 41.4MB in the beginning and 167.5MB in the end (delta: -126.1MB). Peak memory consumption was 219.9MB. Max. memory is 16.1GB. [2022-11-20 20:31:10,522 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 67.1MB. Free memory is still 46.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 20:31:10,522 INFO L158 Benchmark]: CACSL2BoogieTranslator took 507.61ms. Allocated memory was 67.1MB in the beginning and 94.4MB in the end (delta: 27.3MB). Free memory was 41.2MB in the beginning and 70.0MB in the end (delta: -28.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-20 20:31:10,523 INFO L158 Benchmark]: Boogie Procedure Inliner took 95.93ms. Allocated memory is still 94.4MB. Free memory was 70.0MB in the beginning and 66.9MB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 20:31:10,523 INFO L158 Benchmark]: Boogie Preprocessor took 84.41ms. Allocated memory is still 94.4MB. Free memory was 66.9MB in the beginning and 64.6MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 20:31:10,523 INFO L158 Benchmark]: RCFGBuilder took 749.82ms. Allocated memory is still 94.4MB. Free memory was 64.2MB in the beginning and 59.5MB in the end (delta: 4.7MB). Peak memory consumption was 21.4MB. Max. memory is 16.1GB. [2022-11-20 20:31:10,524 INFO L158 Benchmark]: TraceAbstraction took 46691.65ms. Allocated memory was 94.4MB in the beginning and 413.1MB in the end (delta: 318.8MB). Free memory was 59.0MB in the beginning and 173.8MB in the end (delta: -114.7MB). Peak memory consumption was 205.0MB. Max. memory is 16.1GB. [2022-11-20 20:31:10,524 INFO L158 Benchmark]: Witness Printer took 100.89ms. Allocated memory is still 413.1MB. Free memory was 173.8MB in the beginning and 167.5MB in the end (delta: 6.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-20 20:31:10,526 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 67.1MB. Free memory is still 46.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 507.61ms. Allocated memory was 67.1MB in the beginning and 94.4MB in the end (delta: 27.3MB). Free memory was 41.2MB in the beginning and 70.0MB in the end (delta: -28.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 95.93ms. Allocated memory is still 94.4MB. Free memory was 70.0MB in the beginning and 66.9MB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 84.41ms. Allocated memory is still 94.4MB. Free memory was 66.9MB in the beginning and 64.6MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 749.82ms. Allocated memory is still 94.4MB. Free memory was 64.2MB in the beginning and 59.5MB in the end (delta: 4.7MB). Peak memory consumption was 21.4MB. Max. memory is 16.1GB. * TraceAbstraction took 46691.65ms. Allocated memory was 94.4MB in the beginning and 413.1MB in the end (delta: 318.8MB). Free memory was 59.0MB in the beginning and 173.8MB in the end (delta: -114.7MB). Peak memory consumption was 205.0MB. Max. memory is 16.1GB. * Witness Printer took 100.89ms. Allocated memory is still 413.1MB. Free memory was 173.8MB in the beginning and 167.5MB in the end (delta: 6.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~var_130_arg_2~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~var_116_arg_2~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~var_107_arg_2~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~var_130_arg_2~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~var_116_arg_2~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~var_107_arg_2~0#1,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 20]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 46.6s, OverallIterations: 4, TraceHistogramMax: 4, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 43 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 43 mSDsluCounter, 81 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 56 IncrementalHoareTripleChecker+Unchecked, 66 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 29 IncrementalHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 15 mSDtfsCounter, 29 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 202 GetRequests, 119 SyntacticMatches, 13 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 677 ImplicationChecksByTransitivity, 8.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=3, InterpolantAutomatonStates: 28, 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, 4 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 6 NumberOfFragments, 101 HoareAnnotationTreeSize, 2 FomulaSimplifications, 8 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 221 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.8s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 39.8s InterpolantComputationTime, 104 NumberOfCodeBlocks, 95 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 184 ConstructedInterpolants, 81 QuantifiedInterpolants, 9547 SizeOfPredicates, 629 NumberOfNonLiveVariables, 4285 ConjunctsInSsa, 594 ConjunctsInUnsatCore, 19 InterpolantComputations, 1 PerfectInterpolantSequences, 32/144 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 102]: Loop Invariant [2022-11-20 20:31:10,548 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~var_130_arg_2~0#1,QUANTIFIED] [2022-11-20 20:31:10,551 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~var_116_arg_2~0#1,QUANTIFIED] [2022-11-20 20:31:10,551 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~var_107_arg_2~0#1,QUANTIFIED] [2022-11-20 20:31:10,552 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~var_130_arg_2~0#1,QUANTIFIED] [2022-11-20 20:31:10,554 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~var_116_arg_2~0#1,QUANTIFIED] [2022-11-20 20:31:10,555 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~var_107_arg_2~0#1,QUANTIFIED] Derived loop invariant: ((((((((((3bv8 == mask_SORT_16 && 1bv8 == var_22) && var_36 == state_51) && var_22 == state_23) && 0bv8 == state_45) && var_20 == 3bv8) && state_62 == state_45) && var_17 == state_18) && 0bv8 == state_18) && var_36 == 0bv8) && 1bv8 == mask_SORT_3) || (((((((((3bv8 == mask_SORT_16 && 1bv8 == var_22) && !(cond == 0bv32)) && var_17 == 0bv8) && (\exists ULTIMATE.start_main_~var_130_arg_2~0#1 : bv8 :: ~bvand32(~zero_extendFrom8To32(~zero_extendFrom8To32(ULTIMATE.start_main_~var_130_arg_2~0#1)[7:0]), ~zero_extendFrom8To32(mask_SORT_3))[7:0] == state_49)) && var_20 == 3bv8) && (\exists ULTIMATE.start_main_~var_116_arg_2~0#1 : bv8 :: ~bvand32(~zero_extendFrom8To32(~zero_extendFrom8To32(ULTIMATE.start_main_~var_116_arg_2~0#1)[7:0]), ~zero_extendFrom8To32(mask_SORT_3))[7:0] == state_23)) && (\exists ULTIMATE.start_main_~var_107_arg_2~0#1 : bv8 :: ~bvand32(~zero_extendFrom8To32(mask_SORT_16), ~zero_extendFrom8To32(~zero_extendFrom8To32(ULTIMATE.start_main_~var_107_arg_2~0#1)[7:0]))[7:0] == state_18)) && 1bv8 == mask_SORT_3) && (~zero_extendFrom8To32(state_23) == ~zero_extendFrom8To32(var_22) || !(~zero_extendFrom8To32(var_20) == ~zero_extendFrom8To32(state_18)))) RESULT: Ultimate proved your program to be correct! [2022-11-20 20:31:10,581 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33bac876-3cf2-448e-a2cc-a68f6a94927f/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE