./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_BufAl.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_c91e01d2-ebb9-4588-b078-9b43a3b901c8/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c91e01d2-ebb9-4588-b078-9b43a3b901c8/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c91e01d2-ebb9-4588-b078-9b43a3b901c8/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c91e01d2-ebb9-4588-b078-9b43a3b901c8/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_BufAl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c91e01d2-ebb9-4588-b078-9b43a3b901c8/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c91e01d2-ebb9-4588-b078-9b43a3b901c8/bin/utaipan-I9t0OCRTmS --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 847d08069fea111ec08fee8233026ce04a978bd5cfe20961eef37343cf6b12ba --- 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-8393723 [2022-11-19 08:28:05,613 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 08:28:05,616 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 08:28:05,657 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 08:28:05,658 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 08:28:05,662 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 08:28:05,665 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 08:28:05,668 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 08:28:05,672 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 08:28:05,676 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 08:28:05,678 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 08:28:05,679 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 08:28:05,680 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 08:28:05,684 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 08:28:05,685 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 08:28:05,686 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 08:28:05,688 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 08:28:05,695 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 08:28:05,697 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 08:28:05,699 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 08:28:05,703 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 08:28:05,705 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 08:28:05,706 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 08:28:05,707 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 08:28:05,713 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 08:28:05,717 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 08:28:05,718 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 08:28:05,719 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 08:28:05,720 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 08:28:05,721 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 08:28:05,722 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 08:28:05,722 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 08:28:05,724 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 08:28:05,725 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 08:28:05,727 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 08:28:05,727 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 08:28:05,728 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 08:28:05,728 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 08:28:05,729 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 08:28:05,730 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 08:28:05,730 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 08:28:05,731 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c91e01d2-ebb9-4588-b078-9b43a3b901c8/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 08:28:05,772 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 08:28:05,774 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 08:28:05,775 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 08:28:05,775 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 08:28:05,776 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 08:28:05,777 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 08:28:05,777 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 08:28:05,777 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 08:28:05,777 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 08:28:05,778 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 08:28:05,779 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 08:28:05,779 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 08:28:05,779 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 08:28:05,779 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 08:28:05,779 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 08:28:05,780 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 08:28:05,780 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 08:28:05,780 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 08:28:05,781 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 08:28:05,781 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 08:28:05,781 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 08:28:05,782 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 08:28:05,782 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 08:28:05,783 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 08:28:05,784 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 08:28:05,784 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 08:28:05,784 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 08:28:05,784 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 08:28:05,784 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 08:28:05,785 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:28:05,785 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 08:28:05,785 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 08:28:05,786 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 08:28:05,786 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 08:28:05,786 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 08:28:05,786 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 08:28:05,786 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 08:28:05,787 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 08:28:05,787 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_c91e01d2-ebb9-4588-b078-9b43a3b901c8/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c91e01d2-ebb9-4588-b078-9b43a3b901c8/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 847d08069fea111ec08fee8233026ce04a978bd5cfe20961eef37343cf6b12ba [2022-11-19 08:28:06,051 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 08:28:06,083 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 08:28:06,086 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 08:28:06,087 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 08:28:06,088 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 08:28:06,090 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c91e01d2-ebb9-4588-b078-9b43a3b901c8/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_BufAl.c [2022-11-19 08:28:06,146 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c91e01d2-ebb9-4588-b078-9b43a3b901c8/bin/utaipan-I9t0OCRTmS/data/55a64c62d/b402167c63fc4617beba6c1cf9b2285a/FLAG53823281f [2022-11-19 08:28:06,816 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 08:28:06,816 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c91e01d2-ebb9-4588-b078-9b43a3b901c8/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_BufAl.c [2022-11-19 08:28:06,843 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c91e01d2-ebb9-4588-b078-9b43a3b901c8/bin/utaipan-I9t0OCRTmS/data/55a64c62d/b402167c63fc4617beba6c1cf9b2285a/FLAG53823281f [2022-11-19 08:28:06,989 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c91e01d2-ebb9-4588-b078-9b43a3b901c8/bin/utaipan-I9t0OCRTmS/data/55a64c62d/b402167c63fc4617beba6c1cf9b2285a [2022-11-19 08:28:06,992 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 08:28:06,995 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 08:28:06,997 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 08:28:06,998 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 08:28:07,002 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 08:28:07,003 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:28:06" (1/1) ... [2022-11-19 08:28:07,006 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d042e2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:28:07, skipping insertion in model container [2022-11-19 08:28:07,006 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:28:06" (1/1) ... [2022-11-19 08:28:07,014 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 08:28:07,094 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 08:28:07,384 WARN L234 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_c91e01d2-ebb9-4588-b078-9b43a3b901c8/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_BufAl.c[1107,1120] [2022-11-19 08:28:07,812 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:28:07,826 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 08:28:07,834 WARN L234 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_c91e01d2-ebb9-4588-b078-9b43a3b901c8/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_BufAl.c[1107,1120] [2022-11-19 08:28:07,978 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:28:07,990 INFO L208 MainTranslator]: Completed translation [2022-11-19 08:28:07,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:28:07 WrapperNode [2022-11-19 08:28:07,991 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 08:28:07,992 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 08:28:07,992 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 08:28:07,992 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 08:28:08,000 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:28:07" (1/1) ... [2022-11-19 08:28:08,039 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:28:07" (1/1) ... [2022-11-19 08:28:08,227 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2388 [2022-11-19 08:28:08,228 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 08:28:08,229 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 08:28:08,229 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 08:28:08,229 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 08:28:08,239 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:28:07" (1/1) ... [2022-11-19 08:28:08,239 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:28:07" (1/1) ... [2022-11-19 08:28:08,263 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:28:07" (1/1) ... [2022-11-19 08:28:08,263 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:28:07" (1/1) ... [2022-11-19 08:28:08,312 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:28:07" (1/1) ... [2022-11-19 08:28:08,336 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:28:07" (1/1) ... [2022-11-19 08:28:08,344 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:28:07" (1/1) ... [2022-11-19 08:28:08,363 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:28:07" (1/1) ... [2022-11-19 08:28:08,388 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 08:28:08,390 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 08:28:08,390 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 08:28:08,390 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 08:28:08,391 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:28:07" (1/1) ... [2022-11-19 08:28:08,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:28:08,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c91e01d2-ebb9-4588-b078-9b43a3b901c8/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:28:08,428 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c91e01d2-ebb9-4588-b078-9b43a3b901c8/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 08:28:08,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c91e01d2-ebb9-4588-b078-9b43a3b901c8/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 08:28:08,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 08:28:08,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 08:28:09,011 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 08:28:09,015 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 08:28:10,650 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 08:28:15,752 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 08:28:15,752 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 08:28:15,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:28:15 BoogieIcfgContainer [2022-11-19 08:28:15,755 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 08:28:15,759 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 08:28:15,759 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 08:28:15,763 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 08:28:15,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:28:06" (1/3) ... [2022-11-19 08:28:15,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5521df0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:28:15, skipping insertion in model container [2022-11-19 08:28:15,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:28:07" (2/3) ... [2022-11-19 08:28:15,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5521df0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:28:15, skipping insertion in model container [2022-11-19 08:28:15,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:28:15" (3/3) ... [2022-11-19 08:28:15,767 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.h_BufAl.c [2022-11-19 08:28:15,788 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 08:28:15,789 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 08:28:15,854 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 08:28:15,863 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;@4bd5ee6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 08:28:15,863 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 08:28:15,867 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) [2022-11-19 08:28:15,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-19 08:28:15,877 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:28:15,877 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-19 08:28:15,878 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:28:15,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:28:15,884 INFO L85 PathProgramCache]: Analyzing trace with hash 27941107, now seen corresponding path program 1 times [2022-11-19 08:28:15,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:28:15,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547462436] [2022-11-19 08:28:15,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:28:15,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:28:16,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 08:28:16,212 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-19 08:28:16,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 08:28:16,445 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-19 08:28:16,448 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-19 08:28:16,450 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-19 08:28:16,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 08:28:16,457 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-19 08:28:16,461 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 08:28:16,497 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-19 08:28:16,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 08:28:16 BoogieIcfgContainer [2022-11-19 08:28:16,510 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 08:28:16,511 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 08:28:16,511 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 08:28:16,512 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 08:28:16,514 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:28:15" (3/4) ... [2022-11-19 08:28:16,517 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-19 08:28:16,518 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 08:28:16,519 INFO L158 Benchmark]: Toolchain (without parser) took 9524.05ms. Allocated memory was 130.0MB in the beginning and 771.8MB in the end (delta: 641.7MB). Free memory was 93.9MB in the beginning and 284.5MB in the end (delta: -190.6MB). Peak memory consumption was 451.1MB. Max. memory is 16.1GB. [2022-11-19 08:28:16,520 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 79.7MB. Free memory is still 32.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 08:28:16,521 INFO L158 Benchmark]: CACSL2BoogieTranslator took 993.61ms. Allocated memory is still 130.0MB. Free memory was 93.6MB in the beginning and 55.3MB in the end (delta: 38.3MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. [2022-11-19 08:28:16,522 INFO L158 Benchmark]: Boogie Procedure Inliner took 236.16ms. Allocated memory was 130.0MB in the beginning and 178.3MB in the end (delta: 48.2MB). Free memory was 55.3MB in the beginning and 137.3MB in the end (delta: -82.1MB). Peak memory consumption was 32.7MB. Max. memory is 16.1GB. [2022-11-19 08:28:16,527 INFO L158 Benchmark]: Boogie Preprocessor took 160.39ms. Allocated memory is still 178.3MB. Free memory was 137.3MB in the beginning and 127.9MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-19 08:28:16,528 INFO L158 Benchmark]: RCFGBuilder took 7365.06ms. Allocated memory was 178.3MB in the beginning and 771.8MB in the end (delta: 593.5MB). Free memory was 127.9MB in the beginning and 335.9MB in the end (delta: -208.0MB). Peak memory consumption was 384.5MB. Max. memory is 16.1GB. [2022-11-19 08:28:16,529 INFO L158 Benchmark]: TraceAbstraction took 751.59ms. Allocated memory is still 771.8MB. Free memory was 335.9MB in the beginning and 285.5MB in the end (delta: 50.3MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. [2022-11-19 08:28:16,530 INFO L158 Benchmark]: Witness Printer took 6.83ms. Allocated memory is still 771.8MB. Free memory was 285.5MB in the beginning and 284.5MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 08:28:16,539 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 79.7MB. Free memory is still 32.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 993.61ms. Allocated memory is still 130.0MB. Free memory was 93.6MB in the beginning and 55.3MB in the end (delta: 38.3MB). Peak memory consumption was 37.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 236.16ms. Allocated memory was 130.0MB in the beginning and 178.3MB in the end (delta: 48.2MB). Free memory was 55.3MB in the beginning and 137.3MB in the end (delta: -82.1MB). Peak memory consumption was 32.7MB. Max. memory is 16.1GB. * Boogie Preprocessor took 160.39ms. Allocated memory is still 178.3MB. Free memory was 137.3MB in the beginning and 127.9MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * RCFGBuilder took 7365.06ms. Allocated memory was 178.3MB in the beginning and 771.8MB in the end (delta: 593.5MB). Free memory was 127.9MB in the beginning and 335.9MB in the end (delta: -208.0MB). Peak memory consumption was 384.5MB. Max. memory is 16.1GB. * TraceAbstraction took 751.59ms. Allocated memory is still 771.8MB. Free memory was 335.9MB in the beginning and 285.5MB in the end (delta: 50.3MB). Peak memory consumption was 50.3MB. Max. memory is 16.1GB. * Witness Printer took 6.83ms. Allocated memory is still 771.8MB. Free memory was 285.5MB in the beginning and 284.5MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 160, overapproximation of bitwiseComplement at line 162, overapproximation of bitwiseAnd at line 135. Possible FailurePath: [L25] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L26] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L28] const SORT_4 mask_SORT_4 = (SORT_4)-1 >> (sizeof(SORT_4) * 8 - 4); [L29] const SORT_4 msb_SORT_4 = (SORT_4)1 << (4 - 1); [L31] const SORT_7 mask_SORT_7 = (SORT_7)-1 >> (sizeof(SORT_7) * 8 - 5); [L32] const SORT_7 msb_SORT_7 = (SORT_7)1 << (5 - 1); [L34] const SORT_12 mask_SORT_12 = (SORT_12)-1 >> (sizeof(SORT_12) * 8 - 32); [L35] const SORT_12 msb_SORT_12 = (SORT_12)1 << (32 - 1); [L37] const SORT_7 var_8 = 0; [L38] const SORT_12 var_14 = 0; [L39] const SORT_1 var_22 = 1; [L40] const SORT_1 var_26 = 0; [L41] const SORT_12 var_29 = 15; [L42] const SORT_12 var_79 = 14; [L43] const SORT_12 var_97 = 13; [L44] const SORT_12 var_115 = 12; [L45] const SORT_12 var_133 = 11; [L46] const SORT_12 var_151 = 10; [L47] const SORT_12 var_169 = 9; [L48] const SORT_12 var_187 = 8; [L49] const SORT_12 var_205 = 7; [L50] const SORT_12 var_223 = 6; [L51] const SORT_12 var_241 = 5; [L52] const SORT_12 var_259 = 4; [L53] const SORT_12 var_277 = 3; [L54] const SORT_12 var_295 = 2; [L55] const SORT_12 var_313 = 1; [L56] const SORT_4 var_352 = 0; [L57] const SORT_12 var_356 = 16; [L59] SORT_1 input_2; [L60] SORT_1 input_3; [L61] SORT_4 input_5; [L62] SORT_1 input_6; [L63] SORT_1 input_391; [L64] SORT_4 input_393; [L65] SORT_1 input_409; [L66] SORT_4 input_413; [L68] SORT_7 state_9 = __VERIFIER_nondet_uchar() & mask_SORT_7; [L69] SORT_1 state_27 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L70] SORT_1 state_30 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L71] SORT_1 state_32 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L72] SORT_1 state_35 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L73] SORT_1 state_37 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L74] SORT_1 state_41 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L75] SORT_1 state_43 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L76] SORT_1 state_46 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L77] SORT_1 state_48 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L78] SORT_1 state_53 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L79] SORT_1 state_55 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L80] SORT_1 state_58 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L81] SORT_1 state_60 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L82] SORT_1 state_64 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L83] SORT_1 state_66 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L84] SORT_1 state_69 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L85] SORT_1 state_71 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L86] SORT_1 state_350 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L87] SORT_4 state_353 = __VERIFIER_nondet_uchar() & mask_SORT_4; [L89] SORT_7 init_10_arg_1 = var_8; [L90] state_9 = init_10_arg_1 [L91] SORT_1 init_28_arg_1 = var_26; [L92] state_27 = init_28_arg_1 [L93] SORT_1 init_31_arg_1 = var_26; [L94] state_30 = init_31_arg_1 [L95] SORT_1 init_33_arg_1 = var_26; [L96] state_32 = init_33_arg_1 [L97] SORT_1 init_36_arg_1 = var_26; [L98] state_35 = init_36_arg_1 [L99] SORT_1 init_38_arg_1 = var_26; [L100] state_37 = init_38_arg_1 [L101] SORT_1 init_42_arg_1 = var_26; [L102] state_41 = init_42_arg_1 [L103] SORT_1 init_44_arg_1 = var_26; [L104] state_43 = init_44_arg_1 [L105] SORT_1 init_47_arg_1 = var_26; [L106] state_46 = init_47_arg_1 [L107] SORT_1 init_49_arg_1 = var_26; [L108] state_48 = init_49_arg_1 [L109] SORT_1 init_54_arg_1 = var_26; [L110] state_53 = init_54_arg_1 [L111] SORT_1 init_56_arg_1 = var_26; [L112] state_55 = init_56_arg_1 [L113] SORT_1 init_59_arg_1 = var_26; [L114] state_58 = init_59_arg_1 [L115] SORT_1 init_61_arg_1 = var_26; [L116] state_60 = init_61_arg_1 [L117] SORT_1 init_65_arg_1 = var_26; [L118] state_64 = init_65_arg_1 [L119] SORT_1 init_67_arg_1 = var_26; [L120] state_66 = init_67_arg_1 [L121] SORT_1 init_70_arg_1 = var_26; [L122] state_69 = init_70_arg_1 [L123] SORT_1 init_72_arg_1 = var_26; [L124] state_71 = init_72_arg_1 [L125] SORT_1 init_351_arg_1 = var_26; [L126] state_350 = init_351_arg_1 [L127] SORT_4 init_354_arg_1 = var_352; [L128] state_353 = init_354_arg_1 VAL [init_10_arg_1=0, init_28_arg_1=0, init_31_arg_1=0, init_33_arg_1=0, init_351_arg_1=0, init_354_arg_1=0, init_36_arg_1=0, init_38_arg_1=0, init_42_arg_1=0, init_44_arg_1=0, init_47_arg_1=0, init_49_arg_1=0, init_54_arg_1=0, init_56_arg_1=0, init_59_arg_1=0, init_61_arg_1=0, init_65_arg_1=0, init_67_arg_1=0, init_70_arg_1=0, init_72_arg_1=0, mask_SORT_1=1, mask_SORT_12=4294967295, mask_SORT_4=15, mask_SORT_7=31, msb_SORT_1=1, msb_SORT_12=2147483648, msb_SORT_4=8, msb_SORT_7=16, state_27=0, state_30=0, state_32=0, state_35=0, state_350=0, state_353=0, state_37=0, state_41=0, state_43=0, state_46=0, state_48=0, state_53=0, state_55=0, state_58=0, state_60=0, state_64=0, state_66=0, state_69=0, state_71=0, state_9=0, var_115=12, var_133=11, var_14=0, var_151=10, var_169=9, var_187=8, var_205=7, var_22=1, var_223=6, var_241=5, var_259=4, var_26=0, var_277=3, var_29=15, var_295=2, var_313=1, var_352=0, var_356=16, var_79=14, var_8=0, var_97=13] [L131] input_2 = __VERIFIER_nondet_uchar() [L132] input_3 = __VERIFIER_nondet_uchar() [L133] input_5 = __VERIFIER_nondet_uchar() [L134] input_6 = __VERIFIER_nondet_uchar() [L135] input_6 = input_6 & mask_SORT_1 [L136] input_391 = __VERIFIER_nondet_uchar() [L137] input_393 = __VERIFIER_nondet_uchar() [L138] input_409 = __VERIFIER_nondet_uchar() [L139] input_413 = __VERIFIER_nondet_uchar() [L142] SORT_7 var_11_arg_0 = state_9; [L143] SORT_1 var_11 = var_11_arg_0 >> 4; [L144] SORT_1 var_13_arg_0 = var_11; [L145] var_13_arg_0 = var_13_arg_0 & mask_SORT_1 [L146] SORT_12 var_13 = var_13_arg_0; [L147] SORT_12 var_15_arg_0 = var_13; [L148] SORT_12 var_15_arg_1 = var_14; [L149] SORT_1 var_15 = var_15_arg_0 == var_15_arg_1; [L150] SORT_7 var_16_arg_0 = state_9; [L151] SORT_4 var_16 = var_16_arg_0 >> 0; [L152] SORT_4 var_17_arg_0 = var_16; [L153] var_17_arg_0 = var_17_arg_0 & mask_SORT_4 [L154] SORT_12 var_17 = var_17_arg_0; [L155] SORT_12 var_18_arg_0 = var_17; [L156] SORT_12 var_18_arg_1 = var_14; [L157] SORT_1 var_18 = var_18_arg_0 == var_18_arg_1; [L158] SORT_1 var_19_arg_0 = var_15; [L159] SORT_1 var_19_arg_1 = var_18; [L160] SORT_1 var_19 = var_19_arg_0 | var_19_arg_1; [L161] SORT_1 var_23_arg_0 = var_19; [L162] SORT_1 var_23 = ~var_23_arg_0; [L163] SORT_1 var_24_arg_0 = var_22; [L164] SORT_1 var_24_arg_1 = var_23; [L165] SORT_1 var_24 = var_24_arg_0 & var_24_arg_1; [L166] var_24 = var_24 & mask_SORT_1 [L167] SORT_1 bad_25_arg_0 = var_24; [L168] CALL __VERIFIER_assert(!(bad_25_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: 0.6s, 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 [2022-11-19 08:28:16,667 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c91e01d2-ebb9-4588-b078-9b43a3b901c8/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c91e01d2-ebb9-4588-b078-9b43a3b901c8/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c91e01d2-ebb9-4588-b078-9b43a3b901c8/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c91e01d2-ebb9-4588-b078-9b43a3b901c8/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c91e01d2-ebb9-4588-b078-9b43a3b901c8/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_BufAl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c91e01d2-ebb9-4588-b078-9b43a3b901c8/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c91e01d2-ebb9-4588-b078-9b43a3b901c8/bin/utaipan-I9t0OCRTmS --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 847d08069fea111ec08fee8233026ce04a978bd5cfe20961eef37343cf6b12ba --- 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-8393723 [2022-11-19 08:28:18,953 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 08:28:18,955 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 08:28:18,997 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 08:28:18,997 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 08:28:19,001 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 08:28:19,004 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 08:28:19,008 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 08:28:19,011 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 08:28:19,018 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 08:28:19,019 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 08:28:19,020 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 08:28:19,021 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 08:28:19,021 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 08:28:19,022 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 08:28:19,023 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 08:28:19,024 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 08:28:19,025 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 08:28:19,026 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 08:28:19,028 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 08:28:19,030 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 08:28:19,034 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 08:28:19,036 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 08:28:19,038 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 08:28:19,053 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 08:28:19,053 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 08:28:19,053 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 08:28:19,054 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 08:28:19,055 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 08:28:19,056 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 08:28:19,056 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 08:28:19,057 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 08:28:19,057 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 08:28:19,058 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 08:28:19,059 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 08:28:19,059 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 08:28:19,060 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 08:28:19,060 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 08:28:19,060 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 08:28:19,061 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 08:28:19,062 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 08:28:19,063 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c91e01d2-ebb9-4588-b078-9b43a3b901c8/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-19 08:28:19,085 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 08:28:19,086 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 08:28:19,086 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 08:28:19,086 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 08:28:19,087 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 08:28:19,087 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 08:28:19,088 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 08:28:19,088 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 08:28:19,088 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 08:28:19,088 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 08:28:19,089 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 08:28:19,089 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 08:28:19,090 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 08:28:19,090 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 08:28:19,090 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 08:28:19,090 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 08:28:19,090 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 08:28:19,091 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-19 08:28:19,091 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-19 08:28:19,091 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-19 08:28:19,091 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 08:28:19,091 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 08:28:19,092 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 08:28:19,092 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 08:28:19,092 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-19 08:28:19,092 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 08:28:19,093 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:28:19,093 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 08:28:19,093 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 08:28:19,093 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 08:28:19,093 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-19 08:28:19,094 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-19 08:28:19,094 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 08:28:19,094 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 08:28:19,094 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-19 08:28:19,094 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_c91e01d2-ebb9-4588-b078-9b43a3b901c8/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c91e01d2-ebb9-4588-b078-9b43a3b901c8/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 847d08069fea111ec08fee8233026ce04a978bd5cfe20961eef37343cf6b12ba [2022-11-19 08:28:19,460 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 08:28:19,488 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 08:28:19,492 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 08:28:19,493 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 08:28:19,494 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 08:28:19,496 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c91e01d2-ebb9-4588-b078-9b43a3b901c8/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_BufAl.c [2022-11-19 08:28:19,579 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c91e01d2-ebb9-4588-b078-9b43a3b901c8/bin/utaipan-I9t0OCRTmS/data/911fa89fa/ab5e58ba019a41ceb1c6b97c77829c8a/FLAGf005edac5 [2022-11-19 08:28:20,345 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 08:28:20,345 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c91e01d2-ebb9-4588-b078-9b43a3b901c8/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_BufAl.c [2022-11-19 08:28:20,368 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c91e01d2-ebb9-4588-b078-9b43a3b901c8/bin/utaipan-I9t0OCRTmS/data/911fa89fa/ab5e58ba019a41ceb1c6b97c77829c8a/FLAGf005edac5 [2022-11-19 08:28:20,507 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c91e01d2-ebb9-4588-b078-9b43a3b901c8/bin/utaipan-I9t0OCRTmS/data/911fa89fa/ab5e58ba019a41ceb1c6b97c77829c8a [2022-11-19 08:28:20,510 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 08:28:20,513 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 08:28:20,517 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 08:28:20,518 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 08:28:20,521 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 08:28:20,522 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:28:20" (1/1) ... [2022-11-19 08:28:20,523 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c1e8c5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:28:20, skipping insertion in model container [2022-11-19 08:28:20,524 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:28:20" (1/1) ... [2022-11-19 08:28:20,531 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 08:28:20,615 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 08:28:20,852 WARN L234 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_c91e01d2-ebb9-4588-b078-9b43a3b901c8/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_BufAl.c[1107,1120] [2022-11-19 08:28:21,296 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:28:21,300 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 08:28:21,311 WARN L234 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_c91e01d2-ebb9-4588-b078-9b43a3b901c8/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_BufAl.c[1107,1120] [2022-11-19 08:28:21,462 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:28:21,475 INFO L208 MainTranslator]: Completed translation [2022-11-19 08:28:21,476 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:28:21 WrapperNode [2022-11-19 08:28:21,476 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 08:28:21,477 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 08:28:21,477 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 08:28:21,478 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 08:28:21,485 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:28:21" (1/1) ... [2022-11-19 08:28:21,533 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:28:21" (1/1) ... [2022-11-19 08:28:21,653 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1898 [2022-11-19 08:28:21,654 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 08:28:21,655 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 08:28:21,655 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 08:28:21,655 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 08:28:21,664 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:28:21" (1/1) ... [2022-11-19 08:28:21,665 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:28:21" (1/1) ... [2022-11-19 08:28:21,675 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:28:21" (1/1) ... [2022-11-19 08:28:21,676 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:28:21" (1/1) ... [2022-11-19 08:28:21,727 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:28:21" (1/1) ... [2022-11-19 08:28:21,734 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:28:21" (1/1) ... [2022-11-19 08:28:21,741 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:28:21" (1/1) ... [2022-11-19 08:28:21,748 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:28:21" (1/1) ... [2022-11-19 08:28:21,796 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 08:28:21,796 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 08:28:21,797 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 08:28:21,797 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 08:28:21,797 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:28:21" (1/1) ... [2022-11-19 08:28:21,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:28:21,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c91e01d2-ebb9-4588-b078-9b43a3b901c8/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:28:21,841 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c91e01d2-ebb9-4588-b078-9b43a3b901c8/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 08:28:21,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c91e01d2-ebb9-4588-b078-9b43a3b901c8/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 08:28:21,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 08:28:21,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 08:28:22,411 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 08:28:22,413 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 08:28:25,586 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 08:28:25,593 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 08:28:25,593 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 08:28:25,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:28:25 BoogieIcfgContainer [2022-11-19 08:28:25,595 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 08:28:25,597 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 08:28:25,597 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 08:28:25,600 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 08:28:25,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:28:20" (1/3) ... [2022-11-19 08:28:25,601 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@210b0bf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:28:25, skipping insertion in model container [2022-11-19 08:28:25,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:28:21" (2/3) ... [2022-11-19 08:28:25,601 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@210b0bf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:28:25, skipping insertion in model container [2022-11-19 08:28:25,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:28:25" (3/3) ... [2022-11-19 08:28:25,603 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.h_BufAl.c [2022-11-19 08:28:25,621 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 08:28:25,621 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 08:28:25,677 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 08:28:25,686 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;@2fd6b257, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 08:28:25,686 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 08:28:25,691 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) [2022-11-19 08:28:25,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-19 08:28:25,699 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:28:25,699 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-19 08:28:25,700 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:28:25,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:28:25,706 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-19 08:28:25,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:28:25,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [996108883] [2022-11-19 08:28:25,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:28:25,721 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 08:28:25,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c91e01d2-ebb9-4588-b078-9b43a3b901c8/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:28:25,727 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c91e01d2-ebb9-4588-b078-9b43a3b901c8/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 08:28:25,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c91e01d2-ebb9-4588-b078-9b43a3b901c8/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 08:28:26,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:28:26,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-19 08:28:26,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:28:26,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:28:26,374 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:28:26,375 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 08:28:26,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [996108883] [2022-11-19 08:28:26,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [996108883] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:28:26,376 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:28:26,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 08:28:26,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276789580] [2022-11-19 08:28:26,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:28:26,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 08:28:26,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 08:28:26,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 08:28:26,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 08:28:26,411 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) [2022-11-19 08:28:26,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:28:26,680 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-11-19 08:28:26,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 08:28:26,684 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 [2022-11-19 08:28:26,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:28:26,692 INFO L225 Difference]: With dead ends: 20 [2022-11-19 08:28:26,692 INFO L226 Difference]: Without dead ends: 11 [2022-11-19 08:28:26,694 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 [2022-11-19 08:28:26,700 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 08:28:26,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 08:28:26,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-19 08:28:26,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-11-19 08:28:26,733 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) [2022-11-19 08:28:26,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-19 08:28:26,736 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-11-19 08:28:26,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:28:26,736 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-19 08:28:26,736 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) [2022-11-19 08:28:26,737 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-19 08:28:26,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-19 08:28:26,737 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:28:26,737 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-19 08:28:26,762 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c91e01d2-ebb9-4588-b078-9b43a3b901c8/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 08:28:26,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c91e01d2-ebb9-4588-b078-9b43a3b901c8/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 08:28:26,969 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:28:26,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:28:26,974 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-11-19 08:28:26,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:28:26,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [552428290] [2022-11-19 08:28:26,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:28:26,980 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 [2022-11-19 08:28:26,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c91e01d2-ebb9-4588-b078-9b43a3b901c8/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:28:26,982 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c91e01d2-ebb9-4588-b078-9b43a3b901c8/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 08:28:27,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c91e01d2-ebb9-4588-b078-9b43a3b901c8/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 08:28:28,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:28:28,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 1799 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-19 08:28:28,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:28:28,386 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:28:28,387 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:28:28,741 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:28:28,742 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 08:28:28,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [552428290] [2022-11-19 08:28:28,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [552428290] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:28:28,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1504541408] [2022-11-19 08:28:28,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:28:28,743 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 08:28:28,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c91e01d2-ebb9-4588-b078-9b43a3b901c8/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 08:28:28,747 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c91e01d2-ebb9-4588-b078-9b43a3b901c8/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 08:28:28,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c91e01d2-ebb9-4588-b078-9b43a3b901c8/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-11-19 08:28:30,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:28:30,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 1799 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-19 08:28:30,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:28:31,072 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:28:31,072 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:28:31,316 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:28:31,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1504541408] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:28:31,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347284275] [2022-11-19 08:28:31,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:28:31,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:28:31,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c91e01d2-ebb9-4588-b078-9b43a3b901c8/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:28:31,324 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c91e01d2-ebb9-4588-b078-9b43a3b901c8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:28:31,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c91e01d2-ebb9-4588-b078-9b43a3b901c8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 08:28:32,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:28:32,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 1799 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-19 08:28:32,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:28:32,418 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:28:32,418 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:28:32,721 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:28:32,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1347284275] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:28:32,721 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 08:28:32,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 6, 6] total 10 [2022-11-19 08:28:32,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119322084] [2022-11-19 08:28:32,723 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 08:28:32,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-19 08:28:32,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 08:28:32,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-19 08:28:32,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-19 08:28:32,725 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 10 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 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) [2022-11-19 08:28:33,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:28:33,124 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-11-19 08:28:33,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 08:28:33,127 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 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 [2022-11-19 08:28:33,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:28:33,127 INFO L225 Difference]: With dead ends: 16 [2022-11-19 08:28:33,128 INFO L226 Difference]: Without dead ends: 14 [2022-11-19 08:28:33,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 30 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-11-19 08:28:33,129 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 14 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 10 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 08:28:33,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 17 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 10 Unchecked, 0.3s Time] [2022-11-19 08:28:33,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-19 08:28:33,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2022-11-19 08:28:33,136 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) [2022-11-19 08:28:33,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-11-19 08:28:33,137 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2022-11-19 08:28:33,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:28:33,138 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-11-19 08:28:33,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 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) [2022-11-19 08:28:33,138 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-11-19 08:28:33,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-19 08:28:33,139 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:28:33,139 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-19 08:28:33,156 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c91e01d2-ebb9-4588-b078-9b43a3b901c8/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2022-11-19 08:28:33,362 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c91e01d2-ebb9-4588-b078-9b43a3b901c8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-19 08:28:33,570 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c91e01d2-ebb9-4588-b078-9b43a3b901c8/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-19 08:28:33,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c91e01d2-ebb9-4588-b078-9b43a3b901c8/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c91e01d2-ebb9-4588-b078-9b43a3b901c8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c91e01d2-ebb9-4588-b078-9b43a3b901c8/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 08:28:33,757 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:28:33,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:28:33,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1020920393, now seen corresponding path program 2 times [2022-11-19 08:28:33,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:28:33,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [8487633] [2022-11-19 08:28:33,762 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 08:28:33,763 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 [2022-11-19 08:28:33,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c91e01d2-ebb9-4588-b078-9b43a3b901c8/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:28:33,764 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c91e01d2-ebb9-4588-b078-9b43a3b901c8/bin/utaipan-I9t0OCRTmS/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) [2022-11-19 08:28:33,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c91e01d2-ebb9-4588-b078-9b43a3b901c8/bin/utaipan-I9t0OCRTmS/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 [2022-11-19 08:28:35,335 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 08:28:35,335 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 08:28:35,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 3491 conjuncts, 356 conjunts are in the unsatisfiable core [2022-11-19 08:28:35,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:28:39,568 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:28:39,568 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:32:28,224 WARN L233 SmtUtils]: Spent 3.75m on a formula simplification. DAG size of input: 583 DAG size of output: 543 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)