./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound100.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e70d85e-4484-4c58-83a9-32fda040fef8/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e70d85e-4484-4c58-83a9-32fda040fef8/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e70d85e-4484-4c58-83a9-32fda040fef8/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e70d85e-4484-4c58-83a9-32fda040fef8/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound100.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e70d85e-4484-4c58-83a9-32fda040fef8/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e70d85e-4484-4c58-83a9-32fda040fef8/bin/utaipan-I9t0OCRTmS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4fec5b098aa2c60671d1780ba812b42b15ac9ae3aabb25670634981b4519504b --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 06:24:46,722 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 06:24:46,724 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 06:24:46,762 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 06:24:46,763 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 06:24:46,767 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 06:24:46,769 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 06:24:46,773 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 06:24:46,775 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 06:24:46,776 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 06:24:46,777 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 06:24:46,778 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 06:24:46,778 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 06:24:46,779 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 06:24:46,780 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 06:24:46,781 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 06:24:46,784 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 06:24:46,790 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 06:24:46,796 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 06:24:46,802 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 06:24:46,804 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 06:24:46,810 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 06:24:46,811 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 06:24:46,812 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 06:24:46,815 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 06:24:46,815 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 06:24:46,816 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 06:24:46,817 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 06:24:46,817 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 06:24:46,818 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 06:24:46,818 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 06:24:46,819 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 06:24:46,820 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 06:24:46,821 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 06:24:46,822 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 06:24:46,822 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 06:24:46,829 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 06:24:46,829 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 06:24:46,830 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 06:24:46,831 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 06:24:46,831 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 06:24:46,832 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e70d85e-4484-4c58-83a9-32fda040fef8/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 06:24:46,871 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 06:24:46,871 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 06:24:46,872 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 06:24:46,872 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 06:24:46,872 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 06:24:46,873 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 06:24:46,873 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 06:24:46,873 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 06:24:46,873 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 06:24:46,874 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 06:24:46,874 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 06:24:46,874 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 06:24:46,874 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 06:24:46,878 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 06:24:46,878 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 06:24:46,878 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 06:24:46,879 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 06:24:46,879 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 06:24:46,880 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 06:24:46,880 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 06:24:46,880 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 06:24:46,880 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 06:24:46,881 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 06:24:46,881 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 06:24:46,881 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 06:24:46,882 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 06:24:46,882 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 06:24:46,882 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 06:24:46,883 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 06:24:46,883 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 06:24:46,884 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 06:24:46,884 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 06:24:46,884 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:24:46,885 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 06:24:46,885 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 06:24:46,885 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 06:24:46,886 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 06:24:46,886 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 06:24:46,887 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 06:24:46,887 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 06:24:46,888 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 06:24:46,888 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_3e70d85e-4484-4c58-83a9-32fda040fef8/bin/utaipan-I9t0OCRTmS/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e70d85e-4484-4c58-83a9-32fda040fef8/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4fec5b098aa2c60671d1780ba812b42b15ac9ae3aabb25670634981b4519504b [2022-11-19 06:24:47,164 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 06:24:47,186 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 06:24:47,189 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 06:24:47,190 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 06:24:47,191 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 06:24:47,192 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e70d85e-4484-4c58-83a9-32fda040fef8/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound100.c [2022-11-19 06:24:47,255 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e70d85e-4484-4c58-83a9-32fda040fef8/bin/utaipan-I9t0OCRTmS/data/55fd69d81/cffce387d6c94dc184aac4a9bf7f3242/FLAG8c73e3fdc [2022-11-19 06:24:47,695 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 06:24:47,696 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e70d85e-4484-4c58-83a9-32fda040fef8/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound100.c [2022-11-19 06:24:47,702 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e70d85e-4484-4c58-83a9-32fda040fef8/bin/utaipan-I9t0OCRTmS/data/55fd69d81/cffce387d6c94dc184aac4a9bf7f3242/FLAG8c73e3fdc [2022-11-19 06:24:48,087 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e70d85e-4484-4c58-83a9-32fda040fef8/bin/utaipan-I9t0OCRTmS/data/55fd69d81/cffce387d6c94dc184aac4a9bf7f3242 [2022-11-19 06:24:48,090 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 06:24:48,091 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 06:24:48,093 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 06:24:48,093 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 06:24:48,097 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 06:24:48,097 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:24:48" (1/1) ... [2022-11-19 06:24:48,099 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a75c7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:24:48, skipping insertion in model container [2022-11-19 06:24:48,099 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:24:48" (1/1) ... [2022-11-19 06:24:48,107 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 06:24:48,120 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 06:24:48,309 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e70d85e-4484-4c58-83a9-32fda040fef8/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound100.c[709,722] [2022-11-19 06:24:48,338 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:24:48,347 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 06:24:48,360 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e70d85e-4484-4c58-83a9-32fda040fef8/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound100.c[709,722] [2022-11-19 06:24:48,373 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:24:48,386 INFO L208 MainTranslator]: Completed translation [2022-11-19 06:24:48,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:24:48 WrapperNode [2022-11-19 06:24:48,386 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 06:24:48,388 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 06:24:48,388 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 06:24:48,388 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 06:24:48,401 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:24:48" (1/1) ... [2022-11-19 06:24:48,411 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:24:48" (1/1) ... [2022-11-19 06:24:48,436 INFO L138 Inliner]: procedures = 14, calls = 14, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 40 [2022-11-19 06:24:48,437 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 06:24:48,438 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 06:24:48,438 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 06:24:48,439 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 06:24:48,448 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:24:48" (1/1) ... [2022-11-19 06:24:48,448 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:24:48" (1/1) ... [2022-11-19 06:24:48,450 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:24:48" (1/1) ... [2022-11-19 06:24:48,450 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:24:48" (1/1) ... [2022-11-19 06:24:48,470 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:24:48" (1/1) ... [2022-11-19 06:24:48,473 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:24:48" (1/1) ... [2022-11-19 06:24:48,474 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:24:48" (1/1) ... [2022-11-19 06:24:48,475 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:24:48" (1/1) ... [2022-11-19 06:24:48,477 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 06:24:48,478 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 06:24:48,478 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 06:24:48,478 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 06:24:48,479 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:24:48" (1/1) ... [2022-11-19 06:24:48,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:24:48,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e70d85e-4484-4c58-83a9-32fda040fef8/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:24:48,511 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e70d85e-4484-4c58-83a9-32fda040fef8/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 06:24:48,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e70d85e-4484-4c58-83a9-32fda040fef8/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 06:24:48,555 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 06:24:48,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 06:24:48,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 06:24:48,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 06:24:48,555 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-19 06:24:48,556 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-19 06:24:48,614 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 06:24:48,616 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 06:24:48,756 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 06:24:48,793 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 06:24:48,793 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 06:24:48,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:24:48 BoogieIcfgContainer [2022-11-19 06:24:48,796 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 06:24:48,799 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 06:24:48,799 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 06:24:48,804 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 06:24:48,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:24:48" (1/3) ... [2022-11-19 06:24:48,805 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72fe9b3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:24:48, skipping insertion in model container [2022-11-19 06:24:48,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:24:48" (2/3) ... [2022-11-19 06:24:48,805 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72fe9b3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:24:48, skipping insertion in model container [2022-11-19 06:24:48,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:24:48" (3/3) ... [2022-11-19 06:24:48,807 INFO L112 eAbstractionObserver]: Analyzing ICFG freire2_valuebound100.c [2022-11-19 06:24:48,828 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 06:24:48,829 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 06:24:48,885 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 06:24:48,892 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;@4eacaba6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 06:24:48,893 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 06:24:48,897 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 8 states have (on average 1.5) internal successors, (12), 9 states have internal predecessors, (12), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-19 06:24:48,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-19 06:24:48,904 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:24:48,905 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-19 06:24:48,905 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:24:48,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:24:48,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1499849464, now seen corresponding path program 1 times [2022-11-19 06:24:48,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:24:48,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445991085] [2022-11-19 06:24:48,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:24:48,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:24:49,019 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 06:24:49,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [846955629] [2022-11-19 06:24:49,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:24:49,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:24:49,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e70d85e-4484-4c58-83a9-32fda040fef8/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:24:49,025 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e70d85e-4484-4c58-83a9-32fda040fef8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:24:49,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e70d85e-4484-4c58-83a9-32fda040fef8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 06:24:49,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 06:24:49,092 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-19 06:24:49,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 06:24:49,145 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-19 06:24:49,148 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-19 06:24:49,150 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-19 06:24:49,165 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e70d85e-4484-4c58-83a9-32fda040fef8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 06:24:49,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e70d85e-4484-4c58-83a9-32fda040fef8/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:24:49,363 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-19 06:24:49,366 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 06:24:49,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 06:24:49 BoogieIcfgContainer [2022-11-19 06:24:49,384 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 06:24:49,385 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 06:24:49,385 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 06:24:49,385 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 06:24:49,386 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:24:48" (3/4) ... [2022-11-19 06:24:49,388 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-19 06:24:49,388 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 06:24:49,390 INFO L158 Benchmark]: Toolchain (without parser) took 1298.04ms. Allocated memory is still 125.8MB. Free memory was 97.6MB in the beginning and 71.5MB in the end (delta: 26.1MB). Peak memory consumption was 24.2MB. Max. memory is 16.1GB. [2022-11-19 06:24:49,390 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 88.1MB. Free memory is still 45.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 06:24:49,391 INFO L158 Benchmark]: CACSL2BoogieTranslator took 293.94ms. Allocated memory is still 125.8MB. Free memory was 97.4MB in the beginning and 102.9MB in the end (delta: -5.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-19 06:24:49,392 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.15ms. Allocated memory is still 125.8MB. Free memory was 102.9MB in the beginning and 101.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 06:24:49,392 INFO L158 Benchmark]: Boogie Preprocessor took 38.67ms. Allocated memory is still 125.8MB. Free memory was 101.2MB in the beginning and 100.1MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 06:24:49,393 INFO L158 Benchmark]: RCFGBuilder took 318.96ms. Allocated memory is still 125.8MB. Free memory was 100.1MB in the beginning and 88.3MB in the end (delta: 11.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-19 06:24:49,393 INFO L158 Benchmark]: TraceAbstraction took 584.68ms. Allocated memory is still 125.8MB. Free memory was 87.6MB in the beginning and 71.9MB in the end (delta: 15.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-19 06:24:49,394 INFO L158 Benchmark]: Witness Printer took 4.03ms. Allocated memory is still 125.8MB. Free memory was 71.9MB in the beginning and 71.5MB in the end (delta: 336.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 06:24:49,397 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 88.1MB. Free memory is still 45.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 293.94ms. Allocated memory is still 125.8MB. Free memory was 97.4MB in the beginning and 102.9MB in the end (delta: -5.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.15ms. Allocated memory is still 125.8MB. Free memory was 102.9MB in the beginning and 101.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.67ms. Allocated memory is still 125.8MB. Free memory was 101.2MB in the beginning and 100.1MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 318.96ms. Allocated memory is still 125.8MB. Free memory was 100.1MB in the beginning and 88.3MB in the end (delta: 11.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 584.68ms. Allocated memory is still 125.8MB. Free memory was 87.6MB in the beginning and 71.9MB in the end (delta: 15.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Witness Printer took 4.03ms. Allocated memory is still 125.8MB. Free memory was 71.9MB in the beginning and 71.5MB in the end (delta: 336.2kB). 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: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of to_int at line 34, overapproximation of someBinaryDOUBLEComparisonOperation at line 28. Possible FailurePath: [L25] int r; [L26] double a, x, s; [L27] a = __VERIFIER_nondet_double() [L28] CALL assume_abort_if_not(a>=0 && a<=100) [L14] COND FALSE !(!cond) [L28] RET assume_abort_if_not(a>=0 && a<=100) [L29] x = a [L30] s = 3.25 [L31] r = 1 VAL [a=2, r=1, s=13/4, x=2] [L33] COND TRUE 1 VAL [a=2, r=1, s=13/4, x=2] [L34] CALL __VERIFIER_assert((int)(4*s) - 12*r*r == 1) VAL [\old(cond)=0] [L17] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L19] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 17 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=17occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-19 06:24:49,419 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e70d85e-4484-4c58-83a9-32fda040fef8/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e70d85e-4484-4c58-83a9-32fda040fef8/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e70d85e-4484-4c58-83a9-32fda040fef8/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e70d85e-4484-4c58-83a9-32fda040fef8/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e70d85e-4484-4c58-83a9-32fda040fef8/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound100.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e70d85e-4484-4c58-83a9-32fda040fef8/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e70d85e-4484-4c58-83a9-32fda040fef8/bin/utaipan-I9t0OCRTmS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4fec5b098aa2c60671d1780ba812b42b15ac9ae3aabb25670634981b4519504b --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 06:24:51,814 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 06:24:51,817 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 06:24:51,865 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 06:24:51,866 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 06:24:51,870 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 06:24:51,873 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 06:24:51,878 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 06:24:51,881 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 06:24:51,890 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 06:24:51,891 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 06:24:51,893 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 06:24:51,894 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 06:24:51,897 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 06:24:51,898 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 06:24:51,900 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 06:24:51,901 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 06:24:51,904 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 06:24:51,909 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 06:24:51,912 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 06:24:51,918 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 06:24:51,920 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 06:24:51,921 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 06:24:51,924 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 06:24:51,931 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 06:24:51,936 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 06:24:51,937 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 06:24:51,938 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 06:24:51,940 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 06:24:51,941 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 06:24:51,942 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 06:24:51,943 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 06:24:51,944 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 06:24:51,947 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 06:24:51,948 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 06:24:51,948 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 06:24:51,949 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 06:24:51,950 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 06:24:51,950 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 06:24:51,952 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 06:24:51,953 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 06:24:51,959 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e70d85e-4484-4c58-83a9-32fda040fef8/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-11-19 06:24:52,020 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 06:24:52,020 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 06:24:52,021 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 06:24:52,021 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 06:24:52,022 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 06:24:52,023 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 06:24:52,023 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 06:24:52,023 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 06:24:52,023 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 06:24:52,024 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 06:24:52,025 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 06:24:52,025 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 06:24:52,027 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 06:24:52,027 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 06:24:52,028 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 06:24:52,028 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 06:24:52,028 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 06:24:52,029 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 06:24:52,029 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 06:24:52,029 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-19 06:24:52,029 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-19 06:24:52,030 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-19 06:24:52,030 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 06:24:52,030 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 06:24:52,031 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 06:24:52,031 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 06:24:52,031 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 06:24:52,032 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-19 06:24:52,032 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 06:24:52,032 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:24:52,033 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 06:24:52,033 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 06:24:52,034 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 06:24:52,034 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-19 06:24:52,034 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-19 06:24:52,035 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 06:24:52,035 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 06:24:52,035 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-19 06:24:52,036 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_3e70d85e-4484-4c58-83a9-32fda040fef8/bin/utaipan-I9t0OCRTmS/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e70d85e-4484-4c58-83a9-32fda040fef8/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4fec5b098aa2c60671d1780ba812b42b15ac9ae3aabb25670634981b4519504b [2022-11-19 06:24:52,483 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 06:24:52,520 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 06:24:52,524 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 06:24:52,525 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 06:24:52,526 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 06:24:52,528 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e70d85e-4484-4c58-83a9-32fda040fef8/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound100.c [2022-11-19 06:24:52,601 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e70d85e-4484-4c58-83a9-32fda040fef8/bin/utaipan-I9t0OCRTmS/data/2eac309c2/e2475ef828a34510b8f14b19c39660f2/FLAGe6a748038 [2022-11-19 06:24:53,047 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 06:24:53,048 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e70d85e-4484-4c58-83a9-32fda040fef8/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound100.c [2022-11-19 06:24:53,059 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e70d85e-4484-4c58-83a9-32fda040fef8/bin/utaipan-I9t0OCRTmS/data/2eac309c2/e2475ef828a34510b8f14b19c39660f2/FLAGe6a748038 [2022-11-19 06:24:53,438 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e70d85e-4484-4c58-83a9-32fda040fef8/bin/utaipan-I9t0OCRTmS/data/2eac309c2/e2475ef828a34510b8f14b19c39660f2 [2022-11-19 06:24:53,441 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 06:24:53,442 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 06:24:53,444 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 06:24:53,444 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 06:24:53,450 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 06:24:53,451 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:24:53" (1/1) ... [2022-11-19 06:24:53,452 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1526254c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:24:53, skipping insertion in model container [2022-11-19 06:24:53,452 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:24:53" (1/1) ... [2022-11-19 06:24:53,461 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 06:24:53,475 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 06:24:53,622 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e70d85e-4484-4c58-83a9-32fda040fef8/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound100.c[709,722] [2022-11-19 06:24:53,649 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:24:53,662 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 06:24:53,702 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e70d85e-4484-4c58-83a9-32fda040fef8/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound100.c[709,722] [2022-11-19 06:24:53,754 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:24:53,779 INFO L208 MainTranslator]: Completed translation [2022-11-19 06:24:53,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:24:53 WrapperNode [2022-11-19 06:24:53,780 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 06:24:53,781 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 06:24:53,781 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 06:24:53,782 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 06:24:53,789 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:24:53" (1/1) ... [2022-11-19 06:24:53,811 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:24:53" (1/1) ... [2022-11-19 06:24:53,844 INFO L138 Inliner]: procedures = 15, calls = 14, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 41 [2022-11-19 06:24:53,844 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 06:24:53,845 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 06:24:53,846 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 06:24:53,846 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 06:24:53,856 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:24:53" (1/1) ... [2022-11-19 06:24:53,856 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:24:53" (1/1) ... [2022-11-19 06:24:53,865 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:24:53" (1/1) ... [2022-11-19 06:24:53,865 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:24:53" (1/1) ... [2022-11-19 06:24:53,884 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:24:53" (1/1) ... [2022-11-19 06:24:53,900 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:24:53" (1/1) ... [2022-11-19 06:24:53,902 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:24:53" (1/1) ... [2022-11-19 06:24:53,903 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:24:53" (1/1) ... [2022-11-19 06:24:53,905 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 06:24:53,909 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 06:24:53,909 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 06:24:53,909 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 06:24:53,910 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:24:53" (1/1) ... [2022-11-19 06:24:53,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:24:53,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e70d85e-4484-4c58-83a9-32fda040fef8/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:24:53,949 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e70d85e-4484-4c58-83a9-32fda040fef8/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 06:24:53,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e70d85e-4484-4c58-83a9-32fda040fef8/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 06:24:53,999 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 06:24:53,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-19 06:24:53,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 06:24:54,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 06:24:54,000 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-19 06:24:54,000 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-19 06:24:54,100 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 06:24:54,102 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 06:24:56,676 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 06:24:56,691 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 06:24:56,691 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 06:24:56,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:24:56 BoogieIcfgContainer [2022-11-19 06:24:56,693 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 06:24:56,695 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 06:24:56,695 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 06:24:56,698 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 06:24:56,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:24:53" (1/3) ... [2022-11-19 06:24:56,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@302d566e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:24:56, skipping insertion in model container [2022-11-19 06:24:56,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:24:53" (2/3) ... [2022-11-19 06:24:56,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@302d566e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:24:56, skipping insertion in model container [2022-11-19 06:24:56,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:24:56" (3/3) ... [2022-11-19 06:24:56,702 INFO L112 eAbstractionObserver]: Analyzing ICFG freire2_valuebound100.c [2022-11-19 06:24:56,722 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 06:24:56,722 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 06:24:56,771 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 06:24:56,777 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;@c2c0fa2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 06:24:56,778 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 06:24:56,781 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-19 06:24:56,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-19 06:24:56,787 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:24:56,788 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:24:56,788 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:24:56,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:24:56,802 INFO L85 PathProgramCache]: Analyzing trace with hash -589224774, now seen corresponding path program 1 times [2022-11-19 06:24:56,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:24:56,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1847079036] [2022-11-19 06:24:56,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:24:56,818 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:24:56,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e70d85e-4484-4c58-83a9-32fda040fef8/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:24:56,831 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e70d85e-4484-4c58-83a9-32fda040fef8/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 06:24:56,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e70d85e-4484-4c58-83a9-32fda040fef8/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-19 06:24:57,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:24:57,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-19 06:24:57,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:24:57,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:24:57,183 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:24:57,184 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:24:57,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1847079036] [2022-11-19 06:24:57,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1847079036] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:24:57,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:24:57,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 06:24:57,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297475616] [2022-11-19 06:24:57,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:24:57,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 06:24:57,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:24:57,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 06:24:57,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 06:24:57,249 INFO L87 Difference]: Start difference. First operand has 22 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:24:57,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:24:57,297 INFO L93 Difference]: Finished difference Result 41 states and 64 transitions. [2022-11-19 06:24:57,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 06:24:57,299 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-19 06:24:57,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:24:57,308 INFO L225 Difference]: With dead ends: 41 [2022-11-19 06:24:57,309 INFO L226 Difference]: Without dead ends: 18 [2022-11-19 06:24:57,312 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 06:24:57,319 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:24:57,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:24:57,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-11-19 06:24:57,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-11-19 06:24:57,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-19 06:24:57,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 23 transitions. [2022-11-19 06:24:57,373 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 23 transitions. Word has length 9 [2022-11-19 06:24:57,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:24:57,373 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 23 transitions. [2022-11-19 06:24:57,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:24:57,374 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 23 transitions. [2022-11-19 06:24:57,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-19 06:24:57,375 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:24:57,376 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:24:57,403 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e70d85e-4484-4c58-83a9-32fda040fef8/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-19 06:24:57,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e70d85e-4484-4c58-83a9-32fda040fef8/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:24:57,592 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:24:57,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:24:57,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1187450884, now seen corresponding path program 1 times [2022-11-19 06:24:57,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:24:57,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2007320268] [2022-11-19 06:24:57,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:24:57,594 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:24:57,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e70d85e-4484-4c58-83a9-32fda040fef8/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:24:57,596 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e70d85e-4484-4c58-83a9-32fda040fef8/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 06:24:57,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e70d85e-4484-4c58-83a9-32fda040fef8/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-19 06:24:57,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 06:24:57,749 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-19 06:24:57,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 06:24:57,879 ERROR L250 FreeRefinementEngine]: Caught unknown exception: Invalid model [2022-11-19 06:24:57,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1102101850] [2022-11-19 06:24:57,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:24:57,880 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 06:24:57,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e70d85e-4484-4c58-83a9-32fda040fef8/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 06:24:57,884 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e70d85e-4484-4c58-83a9-32fda040fef8/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 06:24:57,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e70d85e-4484-4c58-83a9-32fda040fef8/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-11-19 06:24:58,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:24:58,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 06:24:58,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:24:58,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:24:58,349 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:24:58,349 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:24:58,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2007320268] [2022-11-19 06:24:58,350 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 06:24:58,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1102101850] [2022-11-19 06:24:58,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1102101850] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:24:58,351 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:24:58,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 06:24:58,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925865865] [2022-11-19 06:24:58,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:24:58,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 06:24:58,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:24:58,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 06:24:58,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-19 06:24:58,354 INFO L87 Difference]: Start difference. First operand 18 states and 23 transitions. Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:24:59,698 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-19 06:25:02,341 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-19 06:25:04,345 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-19 06:25:06,349 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-19 06:25:08,516 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-19 06:25:10,988 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.47s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-19 06:25:13,352 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-19 06:25:16,535 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-19 06:25:18,906 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.37s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-19 06:25:18,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:25:18,907 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2022-11-19 06:25:19,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 06:25:19,017 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-19 06:25:19,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:25:19,019 INFO L225 Difference]: With dead ends: 33 [2022-11-19 06:25:19,019 INFO L226 Difference]: Without dead ends: 31 [2022-11-19 06:25:19,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-19 06:25:19,022 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 15 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.4s IncrementalHoareTripleChecker+Time [2022-11-19 06:25:19,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 70 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 8 Unknown, 0 Unchecked, 20.4s Time] [2022-11-19 06:25:19,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-19 06:25:19,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2022-11-19 06:25:19,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 19 states have internal predecessors, (20), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-19 06:25:19,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2022-11-19 06:25:19,035 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 9 [2022-11-19 06:25:19,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:25:19,036 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2022-11-19 06:25:19,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:25:19,036 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2022-11-19 06:25:19,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-19 06:25:19,037 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:25:19,037 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:25:19,050 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e70d85e-4484-4c58-83a9-32fda040fef8/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-19 06:25:19,256 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e70d85e-4484-4c58-83a9-32fda040fef8/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2022-11-19 06:25:19,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e70d85e-4484-4c58-83a9-32fda040fef8/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e70d85e-4484-4c58-83a9-32fda040fef8/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt [2022-11-19 06:25:19,450 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:25:19,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:25:19,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1170702338, now seen corresponding path program 1 times [2022-11-19 06:25:19,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:25:19,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1535393176] [2022-11-19 06:25:19,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:25:19,452 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:25:19,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e70d85e-4484-4c58-83a9-32fda040fef8/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:25:19,453 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e70d85e-4484-4c58-83a9-32fda040fef8/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 06:25:19,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e70d85e-4484-4c58-83a9-32fda040fef8/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-19 06:25:19,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 06:25:19,798 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-19 06:25:20,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 06:25:20,123 ERROR L250 FreeRefinementEngine]: Caught unknown exception: Invalid model [2022-11-19 06:25:20,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [586250346] [2022-11-19 06:25:20,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:25:20,124 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 06:25:20,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e70d85e-4484-4c58-83a9-32fda040fef8/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 06:25:20,125 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e70d85e-4484-4c58-83a9-32fda040fef8/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 06:25:20,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e70d85e-4484-4c58-83a9-32fda040fef8/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2022-11-19 06:25:20,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:25:20,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-19 06:25:20,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:25:23,308 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:25:23,308 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:25:29,610 WARN L837 $PredicateComparison]: unable to prove that (= (_ bv1 32) (bvadd (bvmul (_ bv4 32) (bvmul |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~r~0#1|)) (bvneg (bvmul |c_ULTIMATE.start_main_~r~0#1| (bvmul (_ bv6 32) |c_ULTIMATE.start_main_~r~0#1|))) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 |c_ULTIMATE.start_main_~x~0#1|) (fp.mul c_currentRoundingMode .cse0 |c_ULTIMATE.start_main_~a~0#1|)))) (bvmul (_ bv3 32) |c_ULTIMATE.start_main_~r~0#1|))) is different from false [2022-11-19 06:25:31,646 WARN L859 $PredicateComparison]: unable to prove that (= (_ bv1 32) (bvadd (bvmul (_ bv4 32) (bvmul |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~r~0#1|)) (bvneg (bvmul |c_ULTIMATE.start_main_~r~0#1| (bvmul (_ bv6 32) |c_ULTIMATE.start_main_~r~0#1|))) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 |c_ULTIMATE.start_main_~x~0#1|) (fp.mul c_currentRoundingMode .cse0 |c_ULTIMATE.start_main_~a~0#1|)))) (bvmul (_ bv3 32) |c_ULTIMATE.start_main_~r~0#1|))) is different from true [2022-11-19 06:26:03,563 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:26:03,563 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:26:03,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1535393176] [2022-11-19 06:26:03,564 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 06:26:03,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [586250346] [2022-11-19 06:26:03,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [586250346] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-19 06:26:03,564 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 06:26:03,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 13 [2022-11-19 06:26:03,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159979019] [2022-11-19 06:26:03,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:26:03,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 06:26:03,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:26:03,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 06:26:03,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=99, Unknown=2, NotChecked=20, Total=156 [2022-11-19 06:26:03,567 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 06:26:07,227 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-19 06:26:09,355 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (let ((.cse0 (fp.mul c_currentRoundingMode .cse1 |c_ULTIMATE.start_main_~a~0#1|))) (and (= ((_ fp.to_sbv 32) roundTowardZero (fp.sub c_currentRoundingMode .cse0 .cse0)) (_ bv0 32)) (= (_ bv1 32) (bvadd (bvmul (_ bv4 32) (bvmul |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~r~0#1|)) (bvneg (bvmul |c_ULTIMATE.start_main_~r~0#1| (bvmul (_ bv6 32) |c_ULTIMATE.start_main_~r~0#1|))) ((_ fp.to_sbv 32) roundTowardZero (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse1 |c_ULTIMATE.start_main_~x~0#1|) .cse0)) (bvmul (_ bv3 32) |c_ULTIMATE.start_main_~r~0#1|)))))) is different from false [2022-11-19 06:26:11,398 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (let ((.cse0 (fp.mul c_currentRoundingMode .cse1 |c_ULTIMATE.start_main_~a~0#1|))) (and (= ((_ fp.to_sbv 32) roundTowardZero (fp.sub c_currentRoundingMode .cse0 .cse0)) (_ bv0 32)) (= (_ bv1 32) (bvadd (bvmul (_ bv4 32) (bvmul |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~r~0#1| |c_ULTIMATE.start_main_~r~0#1|)) (bvneg (bvmul |c_ULTIMATE.start_main_~r~0#1| (bvmul (_ bv6 32) |c_ULTIMATE.start_main_~r~0#1|))) ((_ fp.to_sbv 32) roundTowardZero (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse1 |c_ULTIMATE.start_main_~x~0#1|) .cse0)) (bvmul (_ bv3 32) |c_ULTIMATE.start_main_~r~0#1|)))))) is different from true [2022-11-19 06:26:16,537 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.42s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-19 06:26:18,540 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-19 06:26:20,430 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-19 06:26:22,551 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-19 06:26:25,529 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-19 06:26:27,532 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-19 06:26:29,933 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.40s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-19 06:26:31,943 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-19 06:26:31,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:26:31,944 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2022-11-19 06:26:32,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-19 06:26:32,089 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-11-19 06:26:32,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:26:32,090 INFO L225 Difference]: With dead ends: 31 [2022-11-19 06:26:32,090 INFO L226 Difference]: Without dead ends: 29 [2022-11-19 06:26:32,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 30.3s TimeCoverageRelationStatistics Valid=41, Invalid=119, Unknown=4, NotChecked=46, Total=210 [2022-11-19 06:26:32,092 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 7 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 27 IncrementalHoareTripleChecker+Unchecked, 22.7s IncrementalHoareTripleChecker+Time [2022-11-19 06:26:32,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 58 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 7 Unknown, 27 Unchecked, 22.7s Time] [2022-11-19 06:26:32,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-19 06:26:32,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-11-19 06:26:32,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 19 states have internal predecessors, (19), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-19 06:26:32,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2022-11-19 06:26:32,114 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 14 [2022-11-19 06:26:32,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:26:32,116 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2022-11-19 06:26:32,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 06:26:32,117 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2022-11-19 06:26:32,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-19 06:26:32,119 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:26:32,119 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:26:32,131 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e70d85e-4484-4c58-83a9-32fda040fef8/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2022-11-19 06:26:32,347 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e70d85e-4484-4c58-83a9-32fda040fef8/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-19 06:26:32,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e70d85e-4484-4c58-83a9-32fda040fef8/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e70d85e-4484-4c58-83a9-32fda040fef8/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:26:32,525 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:26:32,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:26:32,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1035962748, now seen corresponding path program 1 times [2022-11-19 06:26:32,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:26:32,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [249420535] [2022-11-19 06:26:32,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:26:32,526 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:26:32,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e70d85e-4484-4c58-83a9-32fda040fef8/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:26:32,528 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e70d85e-4484-4c58-83a9-32fda040fef8/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 06:26:32,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e70d85e-4484-4c58-83a9-32fda040fef8/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-19 06:26:34,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 06:26:34,147 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-19 06:26:35,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 06:26:35,824 ERROR L250 FreeRefinementEngine]: Caught unknown exception: Invalid model [2022-11-19 06:26:35,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1983400053] [2022-11-19 06:26:35,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:26:35,825 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 06:26:35,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e70d85e-4484-4c58-83a9-32fda040fef8/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 06:26:35,832 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e70d85e-4484-4c58-83a9-32fda040fef8/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 06:26:35,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3e70d85e-4484-4c58-83a9-32fda040fef8/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2022-11-19 06:27:37,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 06:27:37,049 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-19 06:28:45,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat