./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pipeline.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f 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_7cd46f00-48c7-48cc-9498-9edb10910f9e/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cd46f00-48c7-48cc-9498-9edb10910f9e/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cd46f00-48c7-48cc-9498-9edb10910f9e/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cd46f00-48c7-48cc-9498-9edb10910f9e/bin/utaipan-Xvt2sAort0/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pipeline.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cd46f00-48c7-48cc-9498-9edb10910f9e/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cd46f00-48c7-48cc-9498-9edb10910f9e/bin/utaipan-Xvt2sAort0 --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 11bdfd1da401170ec2c31632798533526859896c0f37a65c8b3581cc72b98ebd --- 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-e04fb08 [2022-11-16 15:52:38,726 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 15:52:38,728 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 15:52:38,761 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 15:52:38,762 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 15:52:38,766 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 15:52:38,769 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 15:52:38,776 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 15:52:38,778 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 15:52:38,782 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 15:52:38,784 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 15:52:38,785 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 15:52:38,786 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 15:52:38,789 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 15:52:38,791 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 15:52:38,793 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 15:52:38,794 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 15:52:38,800 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 15:52:38,801 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 15:52:38,803 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 15:52:38,809 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 15:52:38,810 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 15:52:38,812 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 15:52:38,814 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 15:52:38,817 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 15:52:38,824 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 15:52:38,825 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 15:52:38,826 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 15:52:38,826 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 15:52:38,828 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 15:52:38,828 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 15:52:38,829 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 15:52:38,829 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 15:52:38,830 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 15:52:38,831 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 15:52:38,831 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 15:52:38,832 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 15:52:38,832 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 15:52:38,832 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 15:52:38,833 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 15:52:38,834 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 15:52:38,835 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cd46f00-48c7-48cc-9498-9edb10910f9e/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-16 15:52:38,885 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 15:52:38,886 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 15:52:38,886 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 15:52:38,886 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 15:52:38,887 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 15:52:38,888 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 15:52:38,888 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 15:52:38,888 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 15:52:38,888 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 15:52:38,888 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-16 15:52:38,889 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 15:52:38,889 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 15:52:38,889 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-16 15:52:38,889 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-16 15:52:38,890 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 15:52:38,890 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-16 15:52:38,890 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-16 15:52:38,890 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-16 15:52:38,891 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 15:52:38,891 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 15:52:38,891 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 15:52:38,892 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 15:52:38,892 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 15:52:38,892 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 15:52:38,892 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 15:52:38,893 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 15:52:38,893 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 15:52:38,893 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 15:52:38,893 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 15:52:38,893 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 15:52:38,894 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 15:52:38,894 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-16 15:52:38,894 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 15:52:38,894 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 15:52:38,895 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-16 15:52:38,895 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 15:52:38,895 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 15:52:38,895 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 15:52:38,896 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_7cd46f00-48c7-48cc-9498-9edb10910f9e/bin/utaipan-Xvt2sAort0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cd46f00-48c7-48cc-9498-9edb10910f9e/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 11bdfd1da401170ec2c31632798533526859896c0f37a65c8b3581cc72b98ebd [2022-11-16 15:52:39,210 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 15:52:39,245 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 15:52:39,248 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 15:52:39,250 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 15:52:39,250 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 15:52:39,252 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cd46f00-48c7-48cc-9498-9edb10910f9e/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pipeline.c [2022-11-16 15:52:39,340 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cd46f00-48c7-48cc-9498-9edb10910f9e/bin/utaipan-Xvt2sAort0/data/ba4d2408f/09547eb371374bc7b7573b161b5fe15c/FLAG420debeec [2022-11-16 15:52:39,925 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 15:52:39,926 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cd46f00-48c7-48cc-9498-9edb10910f9e/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pipeline.c [2022-11-16 15:52:39,946 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cd46f00-48c7-48cc-9498-9edb10910f9e/bin/utaipan-Xvt2sAort0/data/ba4d2408f/09547eb371374bc7b7573b161b5fe15c/FLAG420debeec [2022-11-16 15:52:40,252 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cd46f00-48c7-48cc-9498-9edb10910f9e/bin/utaipan-Xvt2sAort0/data/ba4d2408f/09547eb371374bc7b7573b161b5fe15c [2022-11-16 15:52:40,257 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 15:52:40,259 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 15:52:40,265 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 15:52:40,265 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 15:52:40,269 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 15:52:40,270 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 03:52:40" (1/1) ... [2022-11-16 15:52:40,276 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27840ed2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:52:40, skipping insertion in model container [2022-11-16 15:52:40,290 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 03:52:40" (1/1) ... [2022-11-16 15:52:40,308 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 15:52:40,332 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 15:52:40,533 WARN L229 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_7cd46f00-48c7-48cc-9498-9edb10910f9e/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pipeline.c[1107,1120] [2022-11-16 15:52:40,574 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 15:52:40,578 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 15:52:40,589 WARN L229 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_7cd46f00-48c7-48cc-9498-9edb10910f9e/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pipeline.c[1107,1120] [2022-11-16 15:52:40,608 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 15:52:40,629 INFO L208 MainTranslator]: Completed translation [2022-11-16 15:52:40,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:52:40 WrapperNode [2022-11-16 15:52:40,630 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 15:52:40,631 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 15:52:40,631 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 15:52:40,631 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 15:52:40,639 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:52:40" (1/1) ... [2022-11-16 15:52:40,655 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:52:40" (1/1) ... [2022-11-16 15:52:40,700 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 130 [2022-11-16 15:52:40,700 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 15:52:40,701 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 15:52:40,702 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 15:52:40,702 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 15:52:40,712 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:52:40" (1/1) ... [2022-11-16 15:52:40,712 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:52:40" (1/1) ... [2022-11-16 15:52:40,722 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:52:40" (1/1) ... [2022-11-16 15:52:40,722 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:52:40" (1/1) ... [2022-11-16 15:52:40,727 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:52:40" (1/1) ... [2022-11-16 15:52:40,731 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:52:40" (1/1) ... [2022-11-16 15:52:40,732 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:52:40" (1/1) ... [2022-11-16 15:52:40,733 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:52:40" (1/1) ... [2022-11-16 15:52:40,747 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 15:52:40,748 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 15:52:40,748 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 15:52:40,748 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 15:52:40,763 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:52:40" (1/1) ... [2022-11-16 15:52:40,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 15:52:40,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cd46f00-48c7-48cc-9498-9edb10910f9e/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 15:52:40,793 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cd46f00-48c7-48cc-9498-9edb10910f9e/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 15:52:40,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cd46f00-48c7-48cc-9498-9edb10910f9e/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 15:52:40,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 15:52:40,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 15:52:40,910 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 15:52:40,913 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 15:52:41,220 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 15:52:41,432 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 15:52:41,432 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 15:52:41,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 03:52:41 BoogieIcfgContainer [2022-11-16 15:52:41,436 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 15:52:41,438 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 15:52:41,438 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 15:52:41,442 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 15:52:41,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 03:52:40" (1/3) ... [2022-11-16 15:52:41,443 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2889c181 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 03:52:41, skipping insertion in model container [2022-11-16 15:52:41,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:52:40" (2/3) ... [2022-11-16 15:52:41,443 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2889c181 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 03:52:41, skipping insertion in model container [2022-11-16 15:52:41,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 03:52:41" (3/3) ... [2022-11-16 15:52:41,445 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.pipeline.c [2022-11-16 15:52:41,464 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 15:52:41,465 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 15:52:41,538 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 15:52:41,554 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;@5c59ede, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 15:52:41,554 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 15:52:41,558 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) [2022-11-16 15:52:41,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-16 15:52:41,565 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:52:41,565 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-16 15:52:41,566 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 15:52:41,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:52:41,574 INFO L85 PathProgramCache]: Analyzing trace with hash 3338739, now seen corresponding path program 1 times [2022-11-16 15:52:41,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 15:52:41,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104532036] [2022-11-16 15:52:41,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:52:41,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 15:52:41,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 15:52:41,850 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 15:52:41,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 15:52:42,007 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-16 15:52:42,009 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 15:52:42,010 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-16 15:52:42,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 15:52:42,017 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-16 15:52:42,022 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 15:52:42,044 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-16 15:52:42,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 03:52:42 BoogieIcfgContainer [2022-11-16 15:52:42,054 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 15:52:42,055 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 15:52:42,055 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 15:52:42,055 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 15:52:42,056 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 03:52:41" (3/4) ... [2022-11-16 15:52:42,059 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-16 15:52:42,060 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 15:52:42,061 INFO L158 Benchmark]: Toolchain (without parser) took 1801.19ms. Allocated memory was 107.0MB in the beginning and 130.0MB in the end (delta: 23.1MB). Free memory was 61.0MB in the beginning and 96.4MB in the end (delta: -35.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 15:52:42,061 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 107.0MB. Free memory is still 77.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 15:52:42,062 INFO L158 Benchmark]: CACSL2BoogieTranslator took 365.40ms. Allocated memory is still 107.0MB. Free memory was 60.8MB in the beginning and 81.5MB in the end (delta: -20.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-16 15:52:42,063 INFO L158 Benchmark]: Boogie Procedure Inliner took 69.84ms. Allocated memory is still 107.0MB. Free memory was 81.5MB in the beginning and 79.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 15:52:42,064 INFO L158 Benchmark]: Boogie Preprocessor took 46.10ms. Allocated memory is still 107.0MB. Free memory was 79.5MB in the beginning and 78.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 15:52:42,064 INFO L158 Benchmark]: RCFGBuilder took 687.85ms. Allocated memory is still 107.0MB. Free memory was 78.1MB in the beginning and 51.7MB in the end (delta: 26.5MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2022-11-16 15:52:42,065 INFO L158 Benchmark]: TraceAbstraction took 616.20ms. Allocated memory was 107.0MB in the beginning and 130.0MB in the end (delta: 23.1MB). Free memory was 51.2MB in the beginning and 96.4MB in the end (delta: -45.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 15:52:42,066 INFO L158 Benchmark]: Witness Printer took 5.17ms. Allocated memory is still 130.0MB. Free memory is still 96.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 15:52:42,069 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 107.0MB. Free memory is still 77.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 365.40ms. Allocated memory is still 107.0MB. Free memory was 60.8MB in the beginning and 81.5MB in the end (delta: -20.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 69.84ms. Allocated memory is still 107.0MB. Free memory was 81.5MB in the beginning and 79.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.10ms. Allocated memory is still 107.0MB. Free memory was 79.5MB in the beginning and 78.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 687.85ms. Allocated memory is still 107.0MB. Free memory was 78.1MB in the beginning and 51.7MB in the end (delta: 26.5MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * TraceAbstraction took 616.20ms. Allocated memory was 107.0MB in the beginning and 130.0MB in the end (delta: 23.1MB). Free memory was 51.2MB in the beginning and 96.4MB in the end (delta: -45.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 5.17ms. Allocated memory is still 130.0MB. Free memory is still 96.4MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 77, overapproximation of bitwiseComplement at line 79, overapproximation of bitwiseAnd at line 68. Possible FailurePath: [L25] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 32); [L26] const SORT_1 msb_SORT_1 = (SORT_1)1 << (32 - 1); [L28] const SORT_4 mask_SORT_4 = (SORT_4)-1 >> (sizeof(SORT_4) * 8 - 1); [L29] const SORT_4 msb_SORT_4 = (SORT_4)1 << (1 - 1); [L31] const SORT_1 var_8 = 0; [L32] const SORT_4 var_21 = 1; [L34] SORT_1 input_2; [L35] SORT_1 input_3; [L36] SORT_4 input_5; [L37] SORT_1 input_6; [L38] SORT_4 input_7; [L40] SORT_1 state_9 = __VERIFIER_nondet_uint() & mask_SORT_1; [L41] SORT_1 state_11 = __VERIFIER_nondet_uint() & mask_SORT_1; [L42] SORT_1 state_13 = __VERIFIER_nondet_uint() & mask_SORT_1; [L43] SORT_1 state_26 = __VERIFIER_nondet_uint() & mask_SORT_1; [L44] SORT_1 state_28 = __VERIFIER_nondet_uint() & mask_SORT_1; [L46] SORT_1 init_10_arg_1 = var_8; [L47] state_9 = init_10_arg_1 [L48] SORT_1 init_12_arg_1 = var_8; [L49] state_11 = init_12_arg_1 [L50] SORT_1 init_14_arg_1 = var_8; [L51] state_13 = init_14_arg_1 [L52] SORT_1 init_27_arg_1 = var_8; [L53] state_26 = init_27_arg_1 [L54] SORT_1 init_29_arg_1 = var_8; [L55] state_28 = init_29_arg_1 VAL [init_10_arg_1=0, init_12_arg_1=0, init_14_arg_1=0, init_27_arg_1=0, init_29_arg_1=0, mask_SORT_1=4294967295, mask_SORT_4=1, msb_SORT_1=2147483648, msb_SORT_4=1, state_11=0, state_13=0, state_26=0, state_28=0, state_9=0, var_21=1, var_8=0] [L58] input_2 = __VERIFIER_nondet_uint() [L59] input_3 = __VERIFIER_nondet_uint() [L60] input_5 = __VERIFIER_nondet_uchar() [L61] input_6 = __VERIFIER_nondet_uint() [L62] input_7 = __VERIFIER_nondet_uchar() [L65] SORT_1 var_15_arg_0 = state_11; [L66] SORT_1 var_15_arg_1 = state_13; [L67] SORT_1 var_15 = var_15_arg_0 + var_15_arg_1; [L68] var_15 = var_15 & mask_SORT_1 [L69] SORT_1 var_16_arg_0 = state_9; [L70] SORT_1 var_16_arg_1 = var_15; [L71] SORT_4 var_16 = var_16_arg_0 == var_16_arg_1; [L72] SORT_1 var_17_arg_0 = state_9; [L73] SORT_1 var_17_arg_1 = var_8; [L74] SORT_4 var_17 = var_17_arg_0 == var_17_arg_1; [L75] SORT_4 var_18_arg_0 = var_16; [L76] SORT_4 var_18_arg_1 = var_17; [L77] SORT_4 var_18 = var_18_arg_0 | var_18_arg_1; [L78] SORT_4 var_22_arg_0 = var_18; [L79] SORT_4 var_22 = ~var_22_arg_0; [L80] SORT_4 var_23_arg_0 = var_21; [L81] SORT_4 var_23_arg_1 = var_22; [L82] SORT_4 var_23 = var_23_arg_0 & var_23_arg_1; [L83] var_23 = var_23 & mask_SORT_4 [L84] SORT_4 bad_24_arg_0 = var_23; [L85] CALL __VERIFIER_assert(!(bad_24_arg_0)) [L20] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L20] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-16 15:52:42,094 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cd46f00-48c7-48cc-9498-9edb10910f9e/bin/utaipan-Xvt2sAort0/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_7cd46f00-48c7-48cc-9498-9edb10910f9e/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cd46f00-48c7-48cc-9498-9edb10910f9e/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cd46f00-48c7-48cc-9498-9edb10910f9e/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cd46f00-48c7-48cc-9498-9edb10910f9e/bin/utaipan-Xvt2sAort0/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pipeline.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cd46f00-48c7-48cc-9498-9edb10910f9e/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cd46f00-48c7-48cc-9498-9edb10910f9e/bin/utaipan-Xvt2sAort0 --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 11bdfd1da401170ec2c31632798533526859896c0f37a65c8b3581cc72b98ebd --- 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-e04fb08 [2022-11-16 15:52:44,401 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 15:52:44,404 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 15:52:44,443 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 15:52:44,447 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 15:52:44,452 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 15:52:44,454 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 15:52:44,460 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 15:52:44,463 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 15:52:44,466 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 15:52:44,467 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 15:52:44,469 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 15:52:44,470 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 15:52:44,471 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 15:52:44,472 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 15:52:44,473 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 15:52:44,474 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 15:52:44,475 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 15:52:44,477 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 15:52:44,488 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 15:52:44,492 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 15:52:44,493 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 15:52:44,496 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 15:52:44,498 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 15:52:44,508 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 15:52:44,511 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 15:52:44,512 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 15:52:44,513 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 15:52:44,514 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 15:52:44,515 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 15:52:44,516 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 15:52:44,517 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 15:52:44,519 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 15:52:44,519 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 15:52:44,521 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 15:52:44,521 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 15:52:44,522 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 15:52:44,522 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 15:52:44,523 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 15:52:44,524 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 15:52:44,525 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 15:52:44,530 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cd46f00-48c7-48cc-9498-9edb10910f9e/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-16 15:52:44,573 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 15:52:44,573 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 15:52:44,575 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 15:52:44,575 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 15:52:44,576 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 15:52:44,577 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 15:52:44,577 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 15:52:44,577 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 15:52:44,577 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 15:52:44,578 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 15:52:44,579 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 15:52:44,579 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 15:52:44,581 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 15:52:44,581 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 15:52:44,581 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 15:52:44,581 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 15:52:44,582 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 15:52:44,582 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 15:52:44,582 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-16 15:52:44,582 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-16 15:52:44,583 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 15:52:44,583 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 15:52:44,583 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 15:52:44,583 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 15:52:44,584 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 15:52:44,584 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 15:52:44,584 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 15:52:44,584 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 15:52:44,585 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 15:52:44,585 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 15:52:44,585 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-16 15:52:44,585 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-16 15:52:44,586 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 15:52:44,586 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 15:52:44,586 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-16 15:52:44,586 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_7cd46f00-48c7-48cc-9498-9edb10910f9e/bin/utaipan-Xvt2sAort0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cd46f00-48c7-48cc-9498-9edb10910f9e/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 11bdfd1da401170ec2c31632798533526859896c0f37a65c8b3581cc72b98ebd [2022-11-16 15:52:44,963 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 15:52:44,999 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 15:52:45,004 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 15:52:45,005 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 15:52:45,006 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 15:52:45,007 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cd46f00-48c7-48cc-9498-9edb10910f9e/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pipeline.c [2022-11-16 15:52:45,086 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cd46f00-48c7-48cc-9498-9edb10910f9e/bin/utaipan-Xvt2sAort0/data/2c12dae8b/1ac1ac8c99914b3cb494fb6d38d190e4/FLAGc01d4536f [2022-11-16 15:52:45,662 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 15:52:45,665 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cd46f00-48c7-48cc-9498-9edb10910f9e/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pipeline.c [2022-11-16 15:52:45,680 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cd46f00-48c7-48cc-9498-9edb10910f9e/bin/utaipan-Xvt2sAort0/data/2c12dae8b/1ac1ac8c99914b3cb494fb6d38d190e4/FLAGc01d4536f [2022-11-16 15:52:46,098 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cd46f00-48c7-48cc-9498-9edb10910f9e/bin/utaipan-Xvt2sAort0/data/2c12dae8b/1ac1ac8c99914b3cb494fb6d38d190e4 [2022-11-16 15:52:46,101 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 15:52:46,103 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 15:52:46,105 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 15:52:46,105 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 15:52:46,110 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 15:52:46,111 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 03:52:46" (1/1) ... [2022-11-16 15:52:46,112 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3817bd92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:52:46, skipping insertion in model container [2022-11-16 15:52:46,112 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 03:52:46" (1/1) ... [2022-11-16 15:52:46,121 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 15:52:46,148 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 15:52:46,286 WARN L229 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_7cd46f00-48c7-48cc-9498-9edb10910f9e/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pipeline.c[1107,1120] [2022-11-16 15:52:46,373 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 15:52:46,401 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 15:52:46,416 WARN L229 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_7cd46f00-48c7-48cc-9498-9edb10910f9e/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.pipeline.c[1107,1120] [2022-11-16 15:52:46,436 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 15:52:46,465 INFO L208 MainTranslator]: Completed translation [2022-11-16 15:52:46,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:52:46 WrapperNode [2022-11-16 15:52:46,466 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 15:52:46,467 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 15:52:46,467 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 15:52:46,467 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 15:52:46,475 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:52:46" (1/1) ... [2022-11-16 15:52:46,483 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:52:46" (1/1) ... [2022-11-16 15:52:46,507 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 102 [2022-11-16 15:52:46,508 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 15:52:46,509 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 15:52:46,509 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 15:52:46,509 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 15:52:46,520 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:52:46" (1/1) ... [2022-11-16 15:52:46,520 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:52:46" (1/1) ... [2022-11-16 15:52:46,523 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:52:46" (1/1) ... [2022-11-16 15:52:46,523 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:52:46" (1/1) ... [2022-11-16 15:52:46,529 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:52:46" (1/1) ... [2022-11-16 15:52:46,546 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:52:46" (1/1) ... [2022-11-16 15:52:46,548 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:52:46" (1/1) ... [2022-11-16 15:52:46,549 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:52:46" (1/1) ... [2022-11-16 15:52:46,552 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 15:52:46,555 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 15:52:46,556 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 15:52:46,557 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 15:52:46,558 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:52:46" (1/1) ... [2022-11-16 15:52:46,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 15:52:46,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cd46f00-48c7-48cc-9498-9edb10910f9e/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 15:52:46,596 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cd46f00-48c7-48cc-9498-9edb10910f9e/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 15:52:46,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cd46f00-48c7-48cc-9498-9edb10910f9e/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 15:52:46,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 15:52:46,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 15:52:46,770 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 15:52:46,772 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 15:52:46,994 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 15:52:47,003 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 15:52:47,003 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 15:52:47,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 03:52:47 BoogieIcfgContainer [2022-11-16 15:52:47,006 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 15:52:47,008 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 15:52:47,008 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 15:52:47,012 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 15:52:47,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 03:52:46" (1/3) ... [2022-11-16 15:52:47,013 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cb2ee9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 03:52:47, skipping insertion in model container [2022-11-16 15:52:47,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 03:52:46" (2/3) ... [2022-11-16 15:52:47,014 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cb2ee9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 03:52:47, skipping insertion in model container [2022-11-16 15:52:47,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 03:52:47" (3/3) ... [2022-11-16 15:52:47,016 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.pipeline.c [2022-11-16 15:52:47,049 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 15:52:47,049 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 15:52:47,116 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 15:52:47,128 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;@74e4df77, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 15:52:47,128 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 15:52:47,133 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) [2022-11-16 15:52:47,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-16 15:52:47,141 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:52:47,142 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-16 15:52:47,143 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 15:52:47,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:52:47,156 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-16 15:52:47,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 15:52:47,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1675159670] [2022-11-16 15:52:47,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:52:47,172 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 [2022-11-16 15:52:47,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cd46f00-48c7-48cc-9498-9edb10910f9e/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 15:52:47,178 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cd46f00-48c7-48cc-9498-9edb10910f9e/bin/utaipan-Xvt2sAort0/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) [2022-11-16 15:52:47,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cd46f00-48c7-48cc-9498-9edb10910f9e/bin/utaipan-Xvt2sAort0/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 [2022-11-16 15:52:47,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:52:47,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-16 15:52:47,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 15:52:47,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 15:52:47,565 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 15:52:47,566 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 15:52:47,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1675159670] [2022-11-16 15:52:47,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1675159670] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 15:52:47,568 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 15:52:47,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 15:52:47,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784883633] [2022-11-16 15:52:47,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 15:52:47,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 15:52:47,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 15:52:47,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 15:52:47,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 15:52:47,609 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) [2022-11-16 15:52:47,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 15:52:47,680 INFO L93 Difference]: Finished difference Result 20 states and 30 transitions. [2022-11-16 15:52:47,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 15:52:47,685 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 [2022-11-16 15:52:47,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 15:52:47,693 INFO L225 Difference]: With dead ends: 20 [2022-11-16 15:52:47,697 INFO L226 Difference]: Without dead ends: 11 [2022-11-16 15:52:47,700 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 [2022-11-16 15:52:47,706 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 15:52:47,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 15:52:47,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-16 15:52:47,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 9. [2022-11-16 15:52:47,739 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) [2022-11-16 15:52:47,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-16 15:52:47,741 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-11-16 15:52:47,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 15:52:47,741 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-16 15:52:47,741 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) [2022-11-16 15:52:47,742 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-16 15:52:47,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-16 15:52:47,742 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:52:47,743 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-16 15:52:47,759 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cd46f00-48c7-48cc-9498-9edb10910f9e/bin/utaipan-Xvt2sAort0/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)] Ended with exit code 0 [2022-11-16 15:52:47,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cd46f00-48c7-48cc-9498-9edb10910f9e/bin/utaipan-Xvt2sAort0/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 [2022-11-16 15:52:47,944 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 15:52:47,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:52:47,945 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-11-16 15:52:47,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 15:52:47,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [689854791] [2022-11-16 15:52:47,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:52:47,946 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 [2022-11-16 15:52:47,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cd46f00-48c7-48cc-9498-9edb10910f9e/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 15:52:47,948 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cd46f00-48c7-48cc-9498-9edb10910f9e/bin/utaipan-Xvt2sAort0/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) [2022-11-16 15:52:47,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cd46f00-48c7-48cc-9498-9edb10910f9e/bin/utaipan-Xvt2sAort0/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 [2022-11-16 15:52:48,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:52:48,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-16 15:52:48,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 15:52:48,301 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 15:52:48,301 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 15:52:48,824 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 15:52:48,824 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 15:52:48,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [689854791] [2022-11-16 15:52:48,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [689854791] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 15:52:48,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2136394492] [2022-11-16 15:52:48,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:52:48,826 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 15:52:48,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cd46f00-48c7-48cc-9498-9edb10910f9e/bin/utaipan-Xvt2sAort0/cvc4 [2022-11-16 15:52:48,836 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cd46f00-48c7-48cc-9498-9edb10910f9e/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 15:52:48,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cd46f00-48c7-48cc-9498-9edb10910f9e/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-11-16 15:52:48,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:52:48,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-16 15:52:48,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 15:52:49,196 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 15:52:49,197 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 15:52:49,646 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 15:52:49,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2136394492] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 15:52:49,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022455365] [2022-11-16 15:52:49,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 15:52:49,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 15:52:49,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cd46f00-48c7-48cc-9498-9edb10910f9e/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 15:52:49,659 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cd46f00-48c7-48cc-9498-9edb10910f9e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 15:52:49,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cd46f00-48c7-48cc-9498-9edb10910f9e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 15:52:49,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 15:52:49,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-16 15:52:49,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 15:52:49,899 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 15:52:49,900 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 15:52:50,209 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 15:52:50,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1022455365] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 15:52:50,210 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-16 15:52:50,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 6, 6] total 13 [2022-11-16 15:52:50,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227745448] [2022-11-16 15:52:50,212 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-16 15:52:50,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-16 15:52:50,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 15:52:50,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-16 15:52:50,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2022-11-16 15:52:50,214 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 states have internal predecessors, (25), 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) [2022-11-16 15:52:50,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 15:52:50,448 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2022-11-16 15:52:50,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 15:52:50,449 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 states have internal predecessors, (25), 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 [2022-11-16 15:52:50,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 15:52:50,450 INFO L225 Difference]: With dead ends: 14 [2022-11-16 15:52:50,450 INFO L226 Difference]: Without dead ends: 12 [2022-11-16 15:52:50,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2022-11-16 15:52:50,452 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 6 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 12 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 15:52:50,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 25 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 12 Unchecked, 0.0s Time] [2022-11-16 15:52:50,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-11-16 15:52:50,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-11-16 15:52:50,457 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) [2022-11-16 15:52:50,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-11-16 15:52:50,458 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2022-11-16 15:52:50,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 15:52:50,459 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-11-16 15:52:50,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 states have internal predecessors, (25), 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) [2022-11-16 15:52:50,459 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-11-16 15:52:50,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-16 15:52:50,460 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 15:52:50,460 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-16 15:52:50,477 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cd46f00-48c7-48cc-9498-9edb10910f9e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 15:52:50,667 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cd46f00-48c7-48cc-9498-9edb10910f9e/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2022-11-16 15:52:50,874 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cd46f00-48c7-48cc-9498-9edb10910f9e/bin/utaipan-Xvt2sAort0/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 [2022-11-16 15:52:51,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cd46f00-48c7-48cc-9498-9edb10910f9e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cd46f00-48c7-48cc-9498-9edb10910f9e/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cd46f00-48c7-48cc-9498-9edb10910f9e/bin/utaipan-Xvt2sAort0/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 [2022-11-16 15:52:51,067 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 15:52:51,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 15:52:51,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1020920393, now seen corresponding path program 2 times [2022-11-16 15:52:51,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 15:52:51,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1687664911] [2022-11-16 15:52:51,069 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 15:52:51,070 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 [2022-11-16 15:52:51,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cd46f00-48c7-48cc-9498-9edb10910f9e/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 15:52:51,071 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cd46f00-48c7-48cc-9498-9edb10910f9e/bin/utaipan-Xvt2sAort0/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) [2022-11-16 15:52:51,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cd46f00-48c7-48cc-9498-9edb10910f9e/bin/utaipan-Xvt2sAort0/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 [2022-11-16 15:52:51,197 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 15:52:51,198 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 15:52:51,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-16 15:52:51,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 15:52:51,428 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-16 15:52:51,428 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 15:52:52,039 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-16 15:52:52,039 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 15:52:52,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1687664911] [2022-11-16 15:52:52,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1687664911] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 15:52:52,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [786227654] [2022-11-16 15:52:52,040 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 15:52:52,040 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-16 15:52:52,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cd46f00-48c7-48cc-9498-9edb10910f9e/bin/utaipan-Xvt2sAort0/cvc4 [2022-11-16 15:52:52,042 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cd46f00-48c7-48cc-9498-9edb10910f9e/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-16 15:52:52,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cd46f00-48c7-48cc-9498-9edb10910f9e/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-11-16 15:52:52,236 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 15:52:52,236 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 15:52:52,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 41 conjunts are in the unsatisfiable core [2022-11-16 15:52:52,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 15:52:52,602 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 15:52:52,602 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 15:52:53,570 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-16 15:52:53,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [786227654] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 15:52:53,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151275910] [2022-11-16 15:52:53,571 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 15:52:53,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 15:52:53,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cd46f00-48c7-48cc-9498-9edb10910f9e/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 15:52:53,572 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cd46f00-48c7-48cc-9498-9edb10910f9e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 15:52:53,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cd46f00-48c7-48cc-9498-9edb10910f9e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 15:52:53,708 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 15:52:53,708 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 15:52:53,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-16 15:52:53,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 15:52:53,963 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 15:52:53,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 15:52:54,770 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 15:52:54,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1151275910] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 15:52:54,770 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-16 15:52:54,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 6, 5, 7, 6] total 14 [2022-11-16 15:52:54,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341175389] [2022-11-16 15:52:54,771 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-16 15:52:54,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-16 15:52:54,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 15:52:54,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-16 15:52:54,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2022-11-16 15:52:54,772 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 states have internal predecessors, (33), 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) [2022-11-16 15:52:54,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 15:52:54,910 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2022-11-16 15:52:54,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 15:52:54,911 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-16 15:52:54,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 15:52:54,911 INFO L225 Difference]: With dead ends: 14 [2022-11-16 15:52:54,911 INFO L226 Difference]: Without dead ends: 0 [2022-11-16 15:52:54,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 41 SyntacticMatches, 7 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2022-11-16 15:52:54,913 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 2 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 9 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 15:52:54,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 10 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 9 Unchecked, 0.0s Time] [2022-11-16 15:52:54,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-16 15:52:54,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-16 15:52:54,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 15:52:54,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-16 15:52:54,914 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2022-11-16 15:52:54,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 15:52:54,915 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-16 15:52:54,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 states have internal predecessors, (33), 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) [2022-11-16 15:52:54,915 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-16 15:52:54,915 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-16 15:52:54,918 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-16 15:52:54,936 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cd46f00-48c7-48cc-9498-9edb10910f9e/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-16 15:52:55,123 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cd46f00-48c7-48cc-9498-9edb10910f9e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 15:52:55,321 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cd46f00-48c7-48cc-9498-9edb10910f9e/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2022-11-16 15:52:55,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cd46f00-48c7-48cc-9498-9edb10910f9e/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cd46f00-48c7-48cc-9498-9edb10910f9e/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cd46f00-48c7-48cc-9498-9edb10910f9e/bin/utaipan-Xvt2sAort0/cvc4 --incremental --print-success --lang smt [2022-11-16 15:52:55,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-16 15:52:55,671 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-16 15:52:55,672 INFO L895 garLoopResultBuilder]: At program point L56-2(lines 56 115) the Hoare annotation is: (and (or (= |ULTIMATE.start_main_~state_9~0#1| (bvand |ULTIMATE.start_main_~var_8~0#1| |ULTIMATE.start_main_~mask_SORT_1~0#1|)) (= |ULTIMATE.start_main_~state_9~0#1| (bvand (bvadd |ULTIMATE.start_main_~state_13~0#1| |ULTIMATE.start_main_~state_11~0#1|) |ULTIMATE.start_main_~mask_SORT_1~0#1|))) (= |ULTIMATE.start_main_~var_8~0#1| (_ bv0 32)) (= (_ bv1 8) |ULTIMATE.start_main_~mask_SORT_4~0#1|)) [2022-11-16 15:52:55,672 INFO L899 garLoopResultBuilder]: For program point L56-3(lines 56 115) no Hoare annotation was computed. [2022-11-16 15:52:55,672 INFO L895 garLoopResultBuilder]: At program point L116(lines 22 117) the Hoare annotation is: false [2022-11-16 15:52:55,672 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-16 15:52:55,672 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-16 15:52:55,672 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-16 15:52:55,672 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 20) no Hoare annotation was computed. [2022-11-16 15:52:55,672 INFO L899 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed. [2022-11-16 15:52:55,673 INFO L899 garLoopResultBuilder]: For program point L20-1(line 20) no Hoare annotation was computed. [2022-11-16 15:52:55,673 INFO L899 garLoopResultBuilder]: For program point L20-3(line 20) no Hoare annotation was computed. [2022-11-16 15:52:55,676 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1] [2022-11-16 15:52:55,679 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 15:52:55,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 03:52:55 BoogieIcfgContainer [2022-11-16 15:52:55,692 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 15:52:55,692 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 15:52:55,692 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 15:52:55,693 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 15:52:55,693 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 03:52:47" (3/4) ... [2022-11-16 15:52:55,696 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-16 15:52:55,707 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2022-11-16 15:52:55,707 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-16 15:52:55,707 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-16 15:52:55,749 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cd46f00-48c7-48cc-9498-9edb10910f9e/bin/utaipan-Xvt2sAort0/witness.graphml [2022-11-16 15:52:55,749 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 15:52:55,750 INFO L158 Benchmark]: Toolchain (without parser) took 9647.27ms. Allocated memory was 81.8MB in the beginning and 119.5MB in the end (delta: 37.7MB). Free memory was 67.1MB in the beginning and 50.8MB in the end (delta: 16.3MB). Peak memory consumption was 52.8MB. Max. memory is 16.1GB. [2022-11-16 15:52:55,750 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 81.8MB. Free memory is still 63.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 15:52:55,751 INFO L158 Benchmark]: CACSL2BoogieTranslator took 361.27ms. Allocated memory is still 81.8MB. Free memory was 67.1MB in the beginning and 64.4MB in the end (delta: 2.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 15:52:55,751 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.07ms. Allocated memory is still 81.8MB. Free memory was 64.4MB in the beginning and 62.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 15:52:55,752 INFO L158 Benchmark]: Boogie Preprocessor took 45.34ms. Allocated memory is still 81.8MB. Free memory was 62.5MB in the beginning and 61.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 15:52:55,752 INFO L158 Benchmark]: RCFGBuilder took 451.07ms. Allocated memory is still 81.8MB. Free memory was 61.3MB in the beginning and 48.9MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-16 15:52:55,752 INFO L158 Benchmark]: TraceAbstraction took 8684.14ms. Allocated memory was 81.8MB in the beginning and 119.5MB in the end (delta: 37.7MB). Free memory was 48.1MB in the beginning and 53.9MB in the end (delta: -5.8MB). Peak memory consumption was 33.4MB. Max. memory is 16.1GB. [2022-11-16 15:52:55,753 INFO L158 Benchmark]: Witness Printer took 56.96ms. Allocated memory is still 119.5MB. Free memory was 53.9MB in the beginning and 50.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 15:52:55,755 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 81.8MB. Free memory is still 63.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 361.27ms. Allocated memory is still 81.8MB. Free memory was 67.1MB in the beginning and 64.4MB in the end (delta: 2.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.07ms. Allocated memory is still 81.8MB. Free memory was 64.4MB in the beginning and 62.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 45.34ms. Allocated memory is still 81.8MB. Free memory was 62.5MB in the beginning and 61.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 451.07ms. Allocated memory is still 81.8MB. Free memory was 61.3MB in the beginning and 48.9MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 8684.14ms. Allocated memory was 81.8MB in the beginning and 119.5MB in the end (delta: 37.7MB). Free memory was 48.1MB in the beginning and 53.9MB in the end (delta: -5.8MB). Peak memory consumption was 33.4MB. Max. memory is 16.1GB. * Witness Printer took 56.96ms. Allocated memory is still 119.5MB. Free memory was 53.9MB in the beginning and 50.8MB in the end (delta: 3.1MB). 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 - PositiveResult [Line: 20]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 8.6s, OverallIterations: 3, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 12 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12 mSDsluCounter, 48 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 21 IncrementalHoareTripleChecker+Unchecked, 37 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 28 IncrementalHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 11 mSDtfsCounter, 28 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 115 GetRequests, 73 SyntacticMatches, 8 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 2.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=2, InterpolantAutomatonStates: 24, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 6 NumberOfFragments, 21 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 120 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 5.4s InterpolantComputationTime, 62 NumberOfCodeBlocks, 62 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 106 ConstructedInterpolants, 43 QuantifiedInterpolants, 2118 SizeOfPredicates, 237 NumberOfNonLiveVariables, 781 ConjunctsInSsa, 227 ConjunctsInUnsatCore, 13 InterpolantComputations, 1 PerfectInterpolantSequences, 14/54 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 56]: Loop Invariant Derived loop invariant: ((state_9 == ~bvand32(var_8, mask_SORT_1) || state_9 == ~bvand32(~bvadd64(state_13, state_11), mask_SORT_1)) && var_8 == 0bv32) && 1bv8 == mask_SORT_4 RESULT: Ultimate proved your program to be correct! [2022-11-16 15:52:55,778 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7cd46f00-48c7-48cc-9498-9edb10910f9e/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE