./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI --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 c7e459611ed6ff9d4c49aa04980ca7f1d5aaaf97e8fc0116c264955df4ed453a --- 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-5e519f3 [2022-11-03 02:25:30,646 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:25:30,649 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:25:30,709 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:25:30,710 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:25:30,715 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:25:30,718 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:25:30,721 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:25:30,724 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:25:30,730 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:25:30,731 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:25:30,734 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:25:30,735 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:25:30,738 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:25:30,740 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:25:30,742 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:25:30,744 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:25:30,746 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:25:30,748 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:25:30,756 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:25:30,758 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:25:30,759 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:25:30,763 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:25:30,764 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:25:30,775 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:25:30,775 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:25:30,776 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:25:30,777 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:25:30,777 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:25:30,779 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:25:30,779 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:25:30,780 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:25:30,783 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:25:30,785 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:25:30,786 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:25:30,787 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:25:30,788 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:25:30,788 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:25:30,789 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:25:30,790 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:25:30,791 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:25:30,793 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 02:25:30,840 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:25:30,840 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:25:30,841 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:25:30,841 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:25:30,842 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:25:30,842 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:25:30,842 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:25:30,842 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:25:30,843 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:25:30,843 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:25:30,844 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:25:30,844 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:25:30,845 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:25:30,845 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:25:30,845 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:25:30,845 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:25:30,846 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:25:30,846 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:25:30,847 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:25:30,847 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 02:25:30,847 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:25:30,847 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 02:25:30,847 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:25:30,849 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:25:30,850 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:25:30,850 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:25:30,850 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 02:25:30,850 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:25:30,850 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:25:30,851 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:25:30,852 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:25:30,852 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:25:30,852 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:25:30,853 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:25:30,853 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:25:30,853 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:25:30,853 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:25:30,854 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:25:30,854 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:25:30,870 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:25:30,870 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:25:30,871 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_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c7e459611ed6ff9d4c49aa04980ca7f1d5aaaf97e8fc0116c264955df4ed453a [2022-11-03 02:25:31,250 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:25:31,289 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:25:31,292 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:25:31,293 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:25:31,294 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:25:31,296 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2022-11-03 02:25:31,381 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/data/c16fa961b/468672cec3bc45d8b5a1f07c4a6b6fea/FLAG7a7b19569 [2022-11-03 02:25:31,916 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:25:31,924 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2022-11-03 02:25:31,932 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/data/c16fa961b/468672cec3bc45d8b5a1f07c4a6b6fea/FLAG7a7b19569 [2022-11-03 02:25:32,237 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/data/c16fa961b/468672cec3bc45d8b5a1f07c4a6b6fea [2022-11-03 02:25:32,240 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:25:32,241 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:25:32,243 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:25:32,243 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:25:32,248 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:25:32,249 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:25:32" (1/1) ... [2022-11-03 02:25:32,250 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75da3b5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:25:32, skipping insertion in model container [2022-11-03 02:25:32,250 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:25:32" (1/1) ... [2022-11-03 02:25:32,259 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:25:32,284 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:25:32,493 WARN L230 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_96116f2d-9f59-4bfe-9db5-df201d66c1ef/sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c[730,743] [2022-11-03 02:25:32,572 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:25:32,582 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:25:32,594 WARN L230 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_96116f2d-9f59-4bfe-9db5-df201d66c1ef/sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c[730,743] [2022-11-03 02:25:32,626 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:25:32,647 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:25:32,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:25:32 WrapperNode [2022-11-03 02:25:32,648 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:25:32,649 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:25:32,649 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:25:32,649 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:25:32,669 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:25:32" (1/1) ... [2022-11-03 02:25:32,691 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:25:32" (1/1) ... [2022-11-03 02:25:32,734 INFO L138 Inliner]: procedures = 17, calls = 18, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 53 [2022-11-03 02:25:32,736 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:25:32,738 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:25:32,739 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:25:32,739 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:25:32,751 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:25:32" (1/1) ... [2022-11-03 02:25:32,751 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:25:32" (1/1) ... [2022-11-03 02:25:32,753 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:25:32" (1/1) ... [2022-11-03 02:25:32,754 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:25:32" (1/1) ... [2022-11-03 02:25:32,770 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:25:32" (1/1) ... [2022-11-03 02:25:32,789 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:25:32" (1/1) ... [2022-11-03 02:25:32,791 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:25:32" (1/1) ... [2022-11-03 02:25:32,792 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:25:32" (1/1) ... [2022-11-03 02:25:32,795 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:25:32,809 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:25:32,809 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:25:32,810 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:25:32,811 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:25:32" (1/1) ... [2022-11-03 02:25:32,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:25:32,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:25:32,852 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:25:32,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:25:32,900 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:25:32,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:25:32,901 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-11-03 02:25:32,901 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-11-03 02:25:32,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:25:32,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:25:32,901 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2022-11-03 02:25:32,902 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2022-11-03 02:25:32,902 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-03 02:25:32,902 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-03 02:25:33,026 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:25:33,031 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:25:33,469 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:25:33,538 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:25:33,538 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-03 02:25:33,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:25:33 BoogieIcfgContainer [2022-11-03 02:25:33,541 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:25:33,544 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:25:33,544 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:25:33,548 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:25:33,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:25:32" (1/3) ... [2022-11-03 02:25:33,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f61d7b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:25:33, skipping insertion in model container [2022-11-03 02:25:33,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:25:32" (2/3) ... [2022-11-03 02:25:33,550 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f61d7b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:25:33, skipping insertion in model container [2022-11-03 02:25:33,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:25:33" (3/3) ... [2022-11-03 02:25:33,552 INFO L112 eAbstractionObserver]: Analyzing ICFG soft_float_4-3a.c.cil.c [2022-11-03 02:25:33,583 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:25:33,595 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:25:33,695 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:25:33,706 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;@2e43c80c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:25:33,706 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:25:33,711 INFO L276 IsEmpty]: Start isEmpty. Operand has 45 states, 31 states have (on average 1.4516129032258065) internal successors, (45), 32 states have internal predecessors, (45), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-03 02:25:33,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-03 02:25:33,722 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:33,723 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:25:33,724 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:33,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:33,734 INFO L85 PathProgramCache]: Analyzing trace with hash -769531522, now seen corresponding path program 1 times [2022-11-03 02:25:33,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:25:33,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815102153] [2022-11-03 02:25:33,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:33,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:25:34,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:34,658 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-03 02:25:34,658 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:25:34,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815102153] [2022-11-03 02:25:34,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815102153] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:34,660 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:34,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-03 02:25:34,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820803912] [2022-11-03 02:25:34,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:34,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-03 02:25:34,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:25:34,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-03 02:25:34,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:25:34,717 INFO L87 Difference]: Start difference. First operand has 45 states, 31 states have (on average 1.4516129032258065) internal successors, (45), 32 states have internal predecessors, (45), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 10 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 4 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-03 02:25:35,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:35,058 INFO L93 Difference]: Finished difference Result 112 states and 171 transitions. [2022-11-03 02:25:35,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 02:25:35,061 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 4 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 26 [2022-11-03 02:25:35,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:35,075 INFO L225 Difference]: With dead ends: 112 [2022-11-03 02:25:35,075 INFO L226 Difference]: Without dead ends: 63 [2022-11-03 02:25:35,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-11-03 02:25:35,083 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 16 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:35,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 369 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:25:35,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-11-03 02:25:35,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 55. [2022-11-03 02:25:35,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 37 states have (on average 1.2972972972972974) internal successors, (48), 39 states have internal predecessors, (48), 12 states have call successors, (12), 4 states have call predecessors, (12), 5 states have return successors, (15), 11 states have call predecessors, (15), 11 states have call successors, (15) [2022-11-03 02:25:35,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 75 transitions. [2022-11-03 02:25:35,138 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 75 transitions. Word has length 26 [2022-11-03 02:25:35,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:35,139 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 75 transitions. [2022-11-03 02:25:35,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 4 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-03 02:25:35,140 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 75 transitions. [2022-11-03 02:25:35,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-03 02:25:35,143 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:35,143 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:25:35,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:25:35,144 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:35,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:35,145 INFO L85 PathProgramCache]: Analyzing trace with hash 498972275, now seen corresponding path program 1 times [2022-11-03 02:25:35,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:25:35,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778760220] [2022-11-03 02:25:35,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:35,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:25:35,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:35,710 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-03 02:25:35,711 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:25:35,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778760220] [2022-11-03 02:25:35,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778760220] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:25:35,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447544972] [2022-11-03 02:25:35,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:35,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:25:35,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:25:35,721 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:25:35,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:25:35,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:35,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-03 02:25:35,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:25:36,080 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-03 02:25:36,081 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:25:36,474 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-03 02:25:36,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [447544972] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:25:36,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1550812772] [2022-11-03 02:25:36,508 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2022-11-03 02:25:36,509 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:25:36,513 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:25:36,522 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:25:36,523 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:25:37,443 INFO L197 IcfgInterpreter]: Interpreting procedure addflt with input of size 17 for LOIs [2022-11-03 02:25:37,573 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 51 for LOIs [2022-11-03 02:25:37,654 INFO L197 IcfgInterpreter]: Interpreting procedure base2flt with input of size 60 for LOIs [2022-11-03 02:25:37,855 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:25:41,794 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '488#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-03 02:25:41,794 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 02:25:41,794 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:25:41,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 8] total 15 [2022-11-03 02:25:41,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269639186] [2022-11-03 02:25:41,796 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 02:25:41,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-03 02:25:41,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:25:41,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-03 02:25:41,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=1002, Unknown=0, NotChecked=0, Total=1122 [2022-11-03 02:25:41,798 INFO L87 Difference]: Start difference. First operand 55 states and 75 transitions. Second operand has 15 states, 13 states have (on average 2.076923076923077) internal successors, (27), 11 states have internal predecessors, (27), 4 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-03 02:25:42,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:42,269 INFO L93 Difference]: Finished difference Result 138 states and 191 transitions. [2022-11-03 02:25:42,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-03 02:25:42,270 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 2.076923076923077) internal successors, (27), 11 states have internal predecessors, (27), 4 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) Word has length 30 [2022-11-03 02:25:42,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:42,273 INFO L225 Difference]: With dead ends: 138 [2022-11-03 02:25:42,273 INFO L226 Difference]: Without dead ends: 85 [2022-11-03 02:25:42,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 61 SyntacticMatches, 3 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=170, Invalid=1470, Unknown=0, NotChecked=0, Total=1640 [2022-11-03 02:25:42,276 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 31 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:42,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 400 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:25:42,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-11-03 02:25:42,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 69. [2022-11-03 02:25:42,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 47 states have (on average 1.2340425531914894) internal successors, (58), 49 states have internal predecessors, (58), 13 states have call successors, (13), 7 states have call predecessors, (13), 8 states have return successors, (18), 12 states have call predecessors, (18), 12 states have call successors, (18) [2022-11-03 02:25:42,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 89 transitions. [2022-11-03 02:25:42,313 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 89 transitions. Word has length 30 [2022-11-03 02:25:42,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:42,314 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 89 transitions. [2022-11-03 02:25:42,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 2.076923076923077) internal successors, (27), 11 states have internal predecessors, (27), 4 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-03 02:25:42,316 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 89 transitions. [2022-11-03 02:25:42,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-03 02:25:42,318 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:42,318 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:25:42,368 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 02:25:42,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:25:42,533 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:42,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:42,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1785742131, now seen corresponding path program 2 times [2022-11-03 02:25:42,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:25:42,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98000189] [2022-11-03 02:25:42,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:42,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:25:42,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:42,857 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-03 02:25:42,857 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:25:42,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98000189] [2022-11-03 02:25:42,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98000189] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:42,860 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:42,860 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 02:25:42,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735079230] [2022-11-03 02:25:42,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:42,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 02:25:42,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:25:42,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 02:25:42,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:25:42,862 INFO L87 Difference]: Start difference. First operand 69 states and 89 transitions. Second operand has 8 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 02:25:42,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:42,958 INFO L93 Difference]: Finished difference Result 102 states and 131 transitions. [2022-11-03 02:25:42,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:25:42,959 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 30 [2022-11-03 02:25:42,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:42,962 INFO L225 Difference]: With dead ends: 102 [2022-11-03 02:25:42,962 INFO L226 Difference]: Without dead ends: 79 [2022-11-03 02:25:42,964 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:25:42,967 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 8 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:42,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 343 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:25:42,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2022-11-03 02:25:42,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 69. [2022-11-03 02:25:42,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 47 states have (on average 1.2340425531914894) internal successors, (58), 49 states have internal predecessors, (58), 13 states have call successors, (13), 7 states have call predecessors, (13), 8 states have return successors, (18), 12 states have call predecessors, (18), 12 states have call successors, (18) [2022-11-03 02:25:42,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 89 transitions. [2022-11-03 02:25:42,992 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 89 transitions. Word has length 30 [2022-11-03 02:25:42,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:42,994 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 89 transitions. [2022-11-03 02:25:42,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 02:25:42,994 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 89 transitions. [2022-11-03 02:25:43,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-03 02:25:43,002 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:43,003 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:25:43,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:25:43,004 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:43,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:43,004 INFO L85 PathProgramCache]: Analyzing trace with hash 965646607, now seen corresponding path program 1 times [2022-11-03 02:25:43,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:25:43,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470482162] [2022-11-03 02:25:43,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:43,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:25:43,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:43,840 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-03 02:25:43,840 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:25:43,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470482162] [2022-11-03 02:25:43,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470482162] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:43,841 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:43,841 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-11-03 02:25:43,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193293459] [2022-11-03 02:25:43,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:43,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-03 02:25:43,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:25:43,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-03 02:25:43,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2022-11-03 02:25:43,843 INFO L87 Difference]: Start difference. First operand 69 states and 89 transitions. Second operand has 17 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 12 states have internal predecessors, (17), 5 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-03 02:25:44,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:44,231 INFO L93 Difference]: Finished difference Result 85 states and 108 transitions. [2022-11-03 02:25:44,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-03 02:25:44,232 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 12 states have internal predecessors, (17), 5 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) Word has length 35 [2022-11-03 02:25:44,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:44,233 INFO L225 Difference]: With dead ends: 85 [2022-11-03 02:25:44,233 INFO L226 Difference]: Without dead ends: 65 [2022-11-03 02:25:44,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=439, Unknown=0, NotChecked=0, Total=506 [2022-11-03 02:25:44,235 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 22 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:44,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 495 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:25:44,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-11-03 02:25:44,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 57. [2022-11-03 02:25:44,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 39 states have (on average 1.2820512820512822) internal successors, (50), 41 states have internal predecessors, (50), 11 states have call successors, (11), 5 states have call predecessors, (11), 6 states have return successors, (14), 10 states have call predecessors, (14), 10 states have call successors, (14) [2022-11-03 02:25:44,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 75 transitions. [2022-11-03 02:25:44,248 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 75 transitions. Word has length 35 [2022-11-03 02:25:44,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:44,248 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 75 transitions. [2022-11-03 02:25:44,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 12 states have internal predecessors, (17), 5 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-11-03 02:25:44,249 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 75 transitions. [2022-11-03 02:25:44,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-03 02:25:44,250 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:44,250 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:25:44,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 02:25:44,251 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:44,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:44,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1072313768, now seen corresponding path program 3 times [2022-11-03 02:25:44,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:25:44,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171524679] [2022-11-03 02:25:44,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:44,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:25:44,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 02:25:44,299 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-03 02:25:44,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 02:25:44,374 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-03 02:25:44,374 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-03 02:25:44,375 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-03 02:25:44,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 02:25:44,381 INFO L444 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2022-11-03 02:25:44,384 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 02:25:44,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 02:25:44 BoogieIcfgContainer [2022-11-03 02:25:44,414 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 02:25:44,415 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 02:25:44,415 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 02:25:44,415 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 02:25:44,416 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:25:33" (3/4) ... [2022-11-03 02:25:44,419 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-03 02:25:44,420 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 02:25:44,421 INFO L158 Benchmark]: Toolchain (without parser) took 12179.38ms. Allocated memory was 90.2MB in the beginning and 209.7MB in the end (delta: 119.5MB). Free memory was 49.3MB in the beginning and 137.2MB in the end (delta: -87.9MB). Peak memory consumption was 31.0MB. Max. memory is 16.1GB. [2022-11-03 02:25:44,421 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 90.2MB. Free memory is still 65.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 02:25:44,421 INFO L158 Benchmark]: CACSL2BoogieTranslator took 405.21ms. Allocated memory is still 90.2MB. Free memory was 49.2MB in the beginning and 64.2MB in the end (delta: -15.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-03 02:25:44,422 INFO L158 Benchmark]: Boogie Procedure Inliner took 88.05ms. Allocated memory is still 90.2MB. Free memory was 64.2MB in the beginning and 62.5MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 02:25:44,422 INFO L158 Benchmark]: Boogie Preprocessor took 70.56ms. Allocated memory is still 90.2MB. Free memory was 62.5MB in the beginning and 61.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 02:25:44,423 INFO L158 Benchmark]: RCFGBuilder took 732.49ms. Allocated memory is still 90.2MB. Free memory was 61.1MB in the beginning and 42.9MB in the end (delta: 18.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-03 02:25:44,423 INFO L158 Benchmark]: TraceAbstraction took 10870.86ms. Allocated memory was 90.2MB in the beginning and 209.7MB in the end (delta: 119.5MB). Free memory was 42.3MB in the beginning and 137.2MB in the end (delta: -95.0MB). Peak memory consumption was 26.8MB. Max. memory is 16.1GB. [2022-11-03 02:25:44,424 INFO L158 Benchmark]: Witness Printer took 4.93ms. Allocated memory is still 209.7MB. Free memory is still 137.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 02:25:44,426 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 90.2MB. Free memory is still 65.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 405.21ms. Allocated memory is still 90.2MB. Free memory was 49.2MB in the beginning and 64.2MB in the end (delta: -15.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 88.05ms. Allocated memory is still 90.2MB. Free memory was 64.2MB in the beginning and 62.5MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 70.56ms. Allocated memory is still 90.2MB. Free memory was 62.5MB in the beginning and 61.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 732.49ms. Allocated memory is still 90.2MB. Free memory was 61.1MB in the beginning and 42.9MB in the end (delta: 18.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 10870.86ms. Allocated memory was 90.2MB in the beginning and 209.7MB in the end (delta: 119.5MB). Free memory was 42.3MB in the beginning and 137.2MB in the end (delta: -95.0MB). Peak memory consumption was 26.8MB. Max. memory is 16.1GB. * Witness Printer took 4.93ms. Allocated memory is still 209.7MB. Free memory is still 137.2MB. 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: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 110, overapproximation of bitwiseAnd at line 108, overapproximation of bitwiseComplement at line 76. Possible FailurePath: [L226] unsigned int a ; [L227] unsigned int ma = __VERIFIER_nondet_uint(); [L228] signed char ea = __VERIFIER_nondet_char(); [L229] unsigned int b ; [L230] unsigned int mb = __VERIFIER_nondet_uint(); [L231] signed char eb = __VERIFIER_nondet_char(); [L232] unsigned int r_add1 ; [L233] unsigned int r_add2 ; [L234] unsigned int zero ; [L235] int tmp ; [L236] int tmp___0 ; [L237] int __retres14 ; VAL [ea=-125, eb=-126] [L241] CALL, EXPR base2flt(0, 0) VAL [\old(e)=0, \old(m)=0] [L25] unsigned int res ; [L26] unsigned int __retres4 ; VAL [\old(e)=0, \old(m)=0, e=0, m=0] [L29] COND TRUE ! m [L30] __retres4 = 0U VAL [\old(e)=0, \old(m)=0, __retres4=0, e=0, m=0] [L80] return (__retres4); [L241] RET, EXPR base2flt(0, 0) VAL [base2flt(0, 0)=0, ea=-125, eb=-126] [L241] zero = base2flt(0, 0) [L242] CALL, EXPR base2flt(ma, ea) VAL [\old(e)=-125, \old(m)=16777216] [L25] unsigned int res ; [L26] unsigned int __retres4 ; VAL [\old(e)=-125, \old(m)=16777216, e=-125, m=16777216] [L29] COND FALSE !(! m) VAL [\old(e)=-125, \old(m)=16777216, e=-125, m=16777216] [L35] COND FALSE !(m < 1U << 24U) VAL [\old(e)=-125, \old(m)=16777216, e=-125, m=16777216] [L57] COND TRUE 1 VAL [\old(e)=-125, \old(m)=16777216, e=-125, m=16777216] [L59] COND FALSE !(m >= 1U << 25U) VAL [\old(e)=-125, \old(m)=16777216, e=-125, m=16777216] [L76] m = m & ~ (1U << 24U) [L77] res = m | ((unsigned int )(e + 128) << 24U) [L78] __retres4 = res VAL [\old(e)=-125, \old(m)=16777216, __retres4=4278190080, e=-125, m=0, res=4278190080] [L80] return (__retres4); [L242] RET, EXPR base2flt(ma, ea) VAL [base2flt(ma, ea)=-16777216, ea=-125, eb=-126, ma=16777216, zero=0] [L242] a = base2flt(ma, ea) [L243] CALL, EXPR base2flt(mb, eb) VAL [\old(e)=-126, \old(m)=16777217] [L25] unsigned int res ; [L26] unsigned int __retres4 ; VAL [\old(e)=-126, \old(m)=16777217, e=-126, m=16777217] [L29] COND FALSE !(! m) VAL [\old(e)=-126, \old(m)=16777217, e=-126, m=16777217] [L35] COND FALSE !(m < 1U << 24U) VAL [\old(e)=-126, \old(m)=16777217, e=-126, m=16777217] [L57] COND TRUE 1 VAL [\old(e)=-126, \old(m)=16777217, e=-126, m=16777217] [L59] COND FALSE !(m >= 1U << 25U) VAL [\old(e)=-126, \old(m)=16777217, e=-126, m=16777217] [L76] m = m & ~ (1U << 24U) [L77] res = m | ((unsigned int )(e + 128) << 24U) [L78] __retres4 = res VAL [\old(e)=-126, \old(m)=16777217, __retres4=1, e=-126, m=50331650, res=1] [L80] return (__retres4); [L243] RET, EXPR base2flt(mb, eb) VAL [a=4278190080, base2flt(mb, eb)=1, ea=-125, eb=-126, ma=16777216, mb=16777217, zero=0] [L243] b = base2flt(mb, eb) [L244] CALL addflt(a, b) VAL [\old(a)=4278190080, \old(b)=1] [L84] unsigned int res ; [L85] unsigned int ma ; [L86] unsigned int mb ; [L87] unsigned int delta ; [L88] int ea ; [L89] int eb ; [L90] unsigned int tmp ; [L91] unsigned int __retres10 ; [L94] COND FALSE !(a < b) VAL [\old(a)=4278190080, \old(b)=1, a=4278190080, b=1, tmp=1] [L101] COND FALSE !(! b) [L108] ma = a & ((1U << 24U) - 1U) [L109] ea = (int )(a >> 24U) - 128 [L110] ma = ma | (1U << 24U) [L111] mb = b & ((1U << 24U) - 1U) [L112] eb = (int )(b >> 24U) - 128 [L113] mb = mb | (1U << 24U) VAL [\old(a)=4278190080, \old(b)=1, a=4278190080, b=1, ea=-129, eb=-128, tmp=1] [L114] CALL __VERIFIER_assert(ea >= eb) VAL [\old(cond)=0] [L16] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L17] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 45 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 10.7s, OverallIterations: 5, TraceHistogramMax: 3, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 100 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 77 mSDsluCounter, 1607 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1501 mSDsCounter, 31 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 749 IncrementalHoareTripleChecker+Invalid, 780 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 31 mSolverCounterUnsat, 194 mSDtfsCounter, 749 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 155 GetRequests, 74 SyntacticMatches, 3 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 4.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=69occurred in iteration=2, InterpolantAutomatonStates: 52, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 42 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 185 NumberOfCodeBlocks, 185 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 175 ConstructedInterpolants, 0 QuantifiedInterpolants, 425 SizeOfPredicates, 8 NumberOfNonLiveVariables, 116 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 64/76 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 [2022-11-03 02:25:44,450 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI --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 c7e459611ed6ff9d4c49aa04980ca7f1d5aaaf97e8fc0116c264955df4ed453a --- 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-5e519f3 [2022-11-03 02:25:47,230 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:25:47,233 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:25:47,272 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:25:47,273 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:25:47,277 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:25:47,280 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:25:47,285 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:25:47,292 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:25:47,296 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:25:47,297 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:25:47,300 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:25:47,300 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:25:47,308 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:25:47,310 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:25:47,312 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:25:47,313 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:25:47,315 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:25:47,317 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:25:47,322 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:25:47,332 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:25:47,333 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:25:47,335 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:25:47,336 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:25:47,340 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:25:47,340 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:25:47,341 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:25:47,342 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:25:47,342 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:25:47,344 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:25:47,344 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:25:47,345 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:25:47,346 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:25:47,347 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:25:47,348 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:25:47,349 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:25:47,349 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:25:47,350 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:25:47,350 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:25:47,351 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:25:47,352 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:25:47,353 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-11-03 02:25:47,389 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:25:47,390 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:25:47,390 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:25:47,390 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:25:47,391 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:25:47,391 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:25:47,392 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:25:47,392 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:25:47,392 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:25:47,393 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:25:47,393 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:25:47,393 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:25:47,394 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:25:47,394 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 02:25:47,394 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 02:25:47,395 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:25:47,395 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:25:47,395 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:25:47,396 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:25:47,396 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-03 02:25:47,396 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-03 02:25:47,396 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-03 02:25:47,397 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 02:25:47,397 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:25:47,397 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:25:47,397 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:25:47,398 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:25:47,398 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-03 02:25:47,398 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:25:47,399 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:25:47,399 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:25:47,399 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:25:47,399 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:25:47,400 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-03 02:25:47,400 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-03 02:25:47,400 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:25:47,401 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:25:47,401 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-03 02:25:47,401 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_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c7e459611ed6ff9d4c49aa04980ca7f1d5aaaf97e8fc0116c264955df4ed453a [2022-11-03 02:25:47,832 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:25:47,869 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:25:47,872 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:25:47,873 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:25:47,875 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:25:47,878 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2022-11-03 02:25:47,972 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/data/7de0d3ad7/edeb169e24924edf9979acd1ee28ad95/FLAGd69f66e4f [2022-11-03 02:25:48,655 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:25:48,655 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c [2022-11-03 02:25:48,663 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/data/7de0d3ad7/edeb169e24924edf9979acd1ee28ad95/FLAGd69f66e4f [2022-11-03 02:25:48,980 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/data/7de0d3ad7/edeb169e24924edf9979acd1ee28ad95 [2022-11-03 02:25:48,985 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:25:48,986 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:25:48,993 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:25:48,993 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:25:48,997 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:25:48,998 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:25:48" (1/1) ... [2022-11-03 02:25:48,999 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@239922e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:25:48, skipping insertion in model container [2022-11-03 02:25:49,002 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:25:48" (1/1) ... [2022-11-03 02:25:49,013 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:25:49,055 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:25:49,201 WARN L230 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_96116f2d-9f59-4bfe-9db5-df201d66c1ef/sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c[730,743] [2022-11-03 02:25:49,341 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:25:49,364 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:25:49,398 WARN L230 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_96116f2d-9f59-4bfe-9db5-df201d66c1ef/sv-benchmarks/c/bitvector/soft_float_4-3a.c.cil.c[730,743] [2022-11-03 02:25:49,464 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:25:49,480 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:25:49,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:25:49 WrapperNode [2022-11-03 02:25:49,493 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:25:49,494 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:25:49,495 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:25:49,495 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:25:49,504 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:25:49" (1/1) ... [2022-11-03 02:25:49,529 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:25:49" (1/1) ... [2022-11-03 02:25:49,556 INFO L138 Inliner]: procedures = 17, calls = 18, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 51 [2022-11-03 02:25:49,556 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:25:49,558 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:25:49,558 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:25:49,559 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:25:49,570 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:25:49" (1/1) ... [2022-11-03 02:25:49,570 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:25:49" (1/1) ... [2022-11-03 02:25:49,593 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:25:49" (1/1) ... [2022-11-03 02:25:49,593 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:25:49" (1/1) ... [2022-11-03 02:25:49,600 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:25:49" (1/1) ... [2022-11-03 02:25:49,605 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:25:49" (1/1) ... [2022-11-03 02:25:49,607 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:25:49" (1/1) ... [2022-11-03 02:25:49,609 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:25:49" (1/1) ... [2022-11-03 02:25:49,612 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:25:49,613 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:25:49,613 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:25:49,614 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:25:49,615 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:25:49" (1/1) ... [2022-11-03 02:25:49,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:25:49,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:25:49,650 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:25:49,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:25:49,709 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:25:49,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-03 02:25:49,710 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-11-03 02:25:49,710 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-11-03 02:25:49,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:25:49,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:25:49,710 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2022-11-03 02:25:49,711 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2022-11-03 02:25:49,711 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-03 02:25:49,711 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-03 02:25:49,803 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:25:49,806 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:25:50,178 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:25:50,202 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:25:50,203 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-03 02:25:50,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:25:50 BoogieIcfgContainer [2022-11-03 02:25:50,205 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:25:50,208 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:25:50,209 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:25:50,212 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:25:50,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:25:48" (1/3) ... [2022-11-03 02:25:50,224 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19b6c66f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:25:50, skipping insertion in model container [2022-11-03 02:25:50,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:25:49" (2/3) ... [2022-11-03 02:25:50,225 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19b6c66f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:25:50, skipping insertion in model container [2022-11-03 02:25:50,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:25:50" (3/3) ... [2022-11-03 02:25:50,227 INFO L112 eAbstractionObserver]: Analyzing ICFG soft_float_4-3a.c.cil.c [2022-11-03 02:25:50,260 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:25:50,261 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:25:50,369 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:25:50,381 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;@2af8e0e4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:25:50,381 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:25:50,387 INFO L276 IsEmpty]: Start isEmpty. Operand has 54 states, 40 states have (on average 1.475) internal successors, (59), 41 states have internal predecessors, (59), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-03 02:25:50,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-03 02:25:50,400 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:50,401 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:25:50,402 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:50,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:50,413 INFO L85 PathProgramCache]: Analyzing trace with hash 173410466, now seen corresponding path program 1 times [2022-11-03 02:25:50,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:25:50,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1966868863] [2022-11-03 02:25:50,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:50,431 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:25:50,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:25:50,441 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:25:50,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-03 02:25:50,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:50,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 02:25:50,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:25:50,797 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-03 02:25:50,798 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:25:50,799 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:25:50,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1966868863] [2022-11-03 02:25:50,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1966868863] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:50,800 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:50,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 02:25:50,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978689211] [2022-11-03 02:25:50,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:50,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 02:25:50,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:25:50,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 02:25:50,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:25:50,864 INFO L87 Difference]: Start difference. First operand has 54 states, 40 states have (on average 1.475) internal successors, (59), 41 states have internal predecessors, (59), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 02:25:51,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:51,090 INFO L93 Difference]: Finished difference Result 130 states and 196 transitions. [2022-11-03 02:25:51,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 02:25:51,093 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 31 [2022-11-03 02:25:51,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:51,104 INFO L225 Difference]: With dead ends: 130 [2022-11-03 02:25:51,104 INFO L226 Difference]: Without dead ends: 71 [2022-11-03 02:25:51,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:25:51,112 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 23 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:51,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 459 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:25:51,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-11-03 02:25:51,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 61. [2022-11-03 02:25:51,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 45 states have (on average 1.3111111111111111) internal successors, (59), 47 states have internal predecessors, (59), 10 states have call successors, (10), 4 states have call predecessors, (10), 5 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2022-11-03 02:25:51,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 81 transitions. [2022-11-03 02:25:51,169 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 81 transitions. Word has length 31 [2022-11-03 02:25:51,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:51,170 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 81 transitions. [2022-11-03 02:25:51,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 02:25:51,171 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 81 transitions. [2022-11-03 02:25:51,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-03 02:25:51,174 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:51,187 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:25:51,209 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-03 02:25:51,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:25:51,401 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:51,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:51,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1707598935, now seen corresponding path program 1 times [2022-11-03 02:25:51,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:25:51,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [680961173] [2022-11-03 02:25:51,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:51,404 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:25:51,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:25:51,409 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:25:51,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-03 02:25:51,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:51,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:25:51,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:25:51,703 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-03 02:25:51,703 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:25:51,789 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-03 02:25:51,790 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:25:51,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [680961173] [2022-11-03 02:25:51,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [680961173] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:25:51,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [169470348] [2022-11-03 02:25:51,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:51,792 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:25:51,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:25:51,795 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:25:51,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-11-03 02:25:51,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:51,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:25:51,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:25:51,973 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-03 02:25:51,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:25:52,037 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-03 02:25:52,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [169470348] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:25:52,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1575292379] [2022-11-03 02:25:52,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:52,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:25:52,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:25:52,044 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:25:52,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 02:25:52,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:52,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:25:52,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:25:52,205 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-03 02:25:52,205 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:25:52,289 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-03 02:25:52,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1575292379] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:25:52,290 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 02:25:52,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 9, 9] total 9 [2022-11-03 02:25:52,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071318444] [2022-11-03 02:25:52,291 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 02:25:52,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 02:25:52,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:25:52,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 02:25:52,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:25:52,295 INFO L87 Difference]: Start difference. First operand 61 states and 81 transitions. Second operand has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 7 states have internal predecessors, (23), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-03 02:25:52,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:52,511 INFO L93 Difference]: Finished difference Result 121 states and 161 transitions. [2022-11-03 02:25:52,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-03 02:25:52,512 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 7 states have internal predecessors, (23), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 35 [2022-11-03 02:25:52,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:52,518 INFO L225 Difference]: With dead ends: 121 [2022-11-03 02:25:52,518 INFO L226 Difference]: Without dead ends: 93 [2022-11-03 02:25:52,520 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-11-03 02:25:52,522 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 26 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:52,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 492 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:25:52,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-11-03 02:25:52,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 71. [2022-11-03 02:25:52,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 52 states have (on average 1.2884615384615385) internal successors, (67), 54 states have internal predecessors, (67), 12 states have call successors, (12), 5 states have call predecessors, (12), 6 states have return successors, (15), 11 states have call predecessors, (15), 11 states have call successors, (15) [2022-11-03 02:25:52,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 94 transitions. [2022-11-03 02:25:52,553 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 94 transitions. Word has length 35 [2022-11-03 02:25:52,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:52,554 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 94 transitions. [2022-11-03 02:25:52,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 7 states have internal predecessors, (23), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-03 02:25:52,555 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 94 transitions. [2022-11-03 02:25:52,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-03 02:25:52,560 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:52,561 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:25:52,587 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-03 02:25:52,797 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-03 02:25:52,975 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2022-11-03 02:25:53,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 02:25:53,174 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:53,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:53,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1508244029, now seen corresponding path program 1 times [2022-11-03 02:25:53,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:25:53,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [483801782] [2022-11-03 02:25:53,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:53,177 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:25:53,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:25:53,178 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:25:53,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-03 02:25:53,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:53,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 02:25:53,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:25:53,368 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-03 02:25:53,369 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:25:53,451 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-03 02:25:53,452 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:25:53,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [483801782] [2022-11-03 02:25:53,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [483801782] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:25:53,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [294520022] [2022-11-03 02:25:53,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:53,453 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:25:53,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:25:53,457 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:25:53,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-11-03 02:25:53,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:53,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:25:53,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:25:53,675 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-03 02:25:53,675 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:25:53,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [294520022] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:53,676 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:25:53,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8, 8] total 12 [2022-11-03 02:25:53,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576324670] [2022-11-03 02:25:53,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:53,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 02:25:53,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:25:53,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 02:25:53,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-11-03 02:25:53,680 INFO L87 Difference]: Start difference. First operand 71 states and 94 transitions. Second operand has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 7 states have internal predecessors, (24), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-03 02:25:53,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:53,888 INFO L93 Difference]: Finished difference Result 114 states and 150 transitions. [2022-11-03 02:25:53,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-03 02:25:53,889 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 7 states have internal predecessors, (24), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 39 [2022-11-03 02:25:53,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:53,891 INFO L225 Difference]: With dead ends: 114 [2022-11-03 02:25:53,891 INFO L226 Difference]: Without dead ends: 91 [2022-11-03 02:25:53,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-11-03 02:25:53,893 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 19 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:53,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 516 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:25:53,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-11-03 02:25:53,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 79. [2022-11-03 02:25:53,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 58 states have (on average 1.2758620689655173) internal successors, (74), 60 states have internal predecessors, (74), 13 states have call successors, (13), 6 states have call predecessors, (13), 7 states have return successors, (16), 12 states have call predecessors, (16), 12 states have call successors, (16) [2022-11-03 02:25:53,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 103 transitions. [2022-11-03 02:25:53,913 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 103 transitions. Word has length 39 [2022-11-03 02:25:53,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:53,914 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 103 transitions. [2022-11-03 02:25:53,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 7 states have internal predecessors, (24), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-03 02:25:53,914 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 103 transitions. [2022-11-03 02:25:53,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-03 02:25:53,916 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:53,916 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:25:53,929 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-03 02:25:54,130 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2022-11-03 02:25:54,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 02:25:54,329 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:54,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:54,329 INFO L85 PathProgramCache]: Analyzing trace with hash -54729342, now seen corresponding path program 2 times [2022-11-03 02:25:54,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:25:54,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [66512941] [2022-11-03 02:25:54,330 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-03 02:25:54,330 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:25:54,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:25:54,332 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:25:54,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-03 02:25:54,430 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-03 02:25:54,430 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:25:54,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:25:54,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:25:54,599 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 02:25:54,599 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:25:54,599 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:25:54,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [66512941] [2022-11-03 02:25:54,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [66512941] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:54,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:54,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:25:54,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948289245] [2022-11-03 02:25:54,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:54,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:25:54,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:25:54,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:25:54,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:25:54,602 INFO L87 Difference]: Start difference. First operand 79 states and 103 transitions. Second operand has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 02:25:54,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:54,712 INFO L93 Difference]: Finished difference Result 98 states and 124 transitions. [2022-11-03 02:25:54,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:25:54,713 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 39 [2022-11-03 02:25:54,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:54,715 INFO L225 Difference]: With dead ends: 98 [2022-11-03 02:25:54,715 INFO L226 Difference]: Without dead ends: 96 [2022-11-03 02:25:54,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:25:54,717 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 9 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 13 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:54,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 330 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 13 Unchecked, 0.1s Time] [2022-11-03 02:25:54,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2022-11-03 02:25:54,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 85. [2022-11-03 02:25:54,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 62 states have (on average 1.2741935483870968) internal successors, (79), 65 states have internal predecessors, (79), 14 states have call successors, (14), 7 states have call predecessors, (14), 8 states have return successors, (17), 12 states have call predecessors, (17), 13 states have call successors, (17) [2022-11-03 02:25:54,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 110 transitions. [2022-11-03 02:25:54,750 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 110 transitions. Word has length 39 [2022-11-03 02:25:54,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:54,753 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 110 transitions. [2022-11-03 02:25:54,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 02:25:54,756 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 110 transitions. [2022-11-03 02:25:54,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-03 02:25:54,764 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:54,764 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:25:54,783 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-03 02:25:54,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:25:54,983 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:54,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:54,984 INFO L85 PathProgramCache]: Analyzing trace with hash 2528960, now seen corresponding path program 1 times [2022-11-03 02:25:54,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:25:54,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [163409484] [2022-11-03 02:25:54,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:54,985 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:25:54,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:25:54,986 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:25:54,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-03 02:25:55,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:55,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:25:55,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:25:55,227 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 02:25:55,227 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:25:55,227 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:25:55,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [163409484] [2022-11-03 02:25:55,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [163409484] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:55,228 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:55,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:25:55,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767144601] [2022-11-03 02:25:55,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:55,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:25:55,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:25:55,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:25:55,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:25:55,230 INFO L87 Difference]: Start difference. First operand 85 states and 110 transitions. Second operand has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 02:25:55,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:55,324 INFO L93 Difference]: Finished difference Result 94 states and 119 transitions. [2022-11-03 02:25:55,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:25:55,327 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 39 [2022-11-03 02:25:55,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:55,329 INFO L225 Difference]: With dead ends: 94 [2022-11-03 02:25:55,329 INFO L226 Difference]: Without dead ends: 92 [2022-11-03 02:25:55,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:25:55,330 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 9 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 12 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:55,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 308 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 12 Unchecked, 0.0s Time] [2022-11-03 02:25:55,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2022-11-03 02:25:55,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 83. [2022-11-03 02:25:55,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 61 states have (on average 1.2622950819672132) internal successors, (77), 63 states have internal predecessors, (77), 13 states have call successors, (13), 7 states have call predecessors, (13), 8 states have return successors, (16), 12 states have call predecessors, (16), 12 states have call successors, (16) [2022-11-03 02:25:55,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 106 transitions. [2022-11-03 02:25:55,348 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 106 transitions. Word has length 39 [2022-11-03 02:25:55,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:55,349 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 106 transitions. [2022-11-03 02:25:55,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 02:25:55,349 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 106 transitions. [2022-11-03 02:25:55,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-03 02:25:55,350 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:55,351 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:25:55,369 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-03 02:25:55,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:25:55,565 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:55,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:55,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1136903568, now seen corresponding path program 1 times [2022-11-03 02:25:55,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:25:55,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1494935714] [2022-11-03 02:25:55,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:55,566 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:25:55,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:25:55,568 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:25:55,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-03 02:25:55,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:55,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 02:25:55,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:25:55,739 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-03 02:25:55,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:25:55,880 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-03 02:25:55,880 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:25:55,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1494935714] [2022-11-03 02:25:55,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1494935714] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:25:55,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [422847710] [2022-11-03 02:25:55,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:55,882 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:25:55,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:25:55,883 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:25:55,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2022-11-03 02:25:55,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:55,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 02:25:55,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:25:56,043 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-03 02:25:56,044 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:25:56,157 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-03 02:25:56,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [422847710] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:25:56,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770148451] [2022-11-03 02:25:56,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:56,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:25:56,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:25:56,160 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:25:56,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-03 02:25:56,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:56,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 02:25:56,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:25:56,289 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-03 02:25:56,292 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:25:56,401 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-03 02:25:56,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1770148451] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:25:56,402 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 02:25:56,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 9 [2022-11-03 02:25:56,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096029823] [2022-11-03 02:25:56,403 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 02:25:56,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 02:25:56,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:25:56,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 02:25:56,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:25:56,406 INFO L87 Difference]: Start difference. First operand 83 states and 106 transitions. Second operand has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 8 states have internal predecessors, (30), 3 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-03 02:25:56,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:56,646 INFO L93 Difference]: Finished difference Result 129 states and 170 transitions. [2022-11-03 02:25:56,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 02:25:56,646 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 8 states have internal predecessors, (30), 3 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 44 [2022-11-03 02:25:56,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:56,648 INFO L225 Difference]: With dead ends: 129 [2022-11-03 02:25:56,648 INFO L226 Difference]: Without dead ends: 118 [2022-11-03 02:25:56,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-11-03 02:25:56,650 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 42 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:56,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 501 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:25:56,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2022-11-03 02:25:56,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 97. [2022-11-03 02:25:56,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 70 states have (on average 1.2428571428571429) internal successors, (87), 74 states have internal predecessors, (87), 16 states have call successors, (16), 7 states have call predecessors, (16), 10 states have return successors, (22), 15 states have call predecessors, (22), 15 states have call successors, (22) [2022-11-03 02:25:56,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 125 transitions. [2022-11-03 02:25:56,678 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 125 transitions. Word has length 44 [2022-11-03 02:25:56,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:56,678 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 125 transitions. [2022-11-03 02:25:56,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 8 states have internal predecessors, (30), 3 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-03 02:25:56,678 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 125 transitions. [2022-11-03 02:25:56,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-03 02:25:56,679 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:56,680 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:25:56,688 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2022-11-03 02:25:56,889 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-03 02:25:57,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-03 02:25:57,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:25:57,283 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:57,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:57,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1837968146, now seen corresponding path program 1 times [2022-11-03 02:25:57,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:25:57,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [752822306] [2022-11-03 02:25:57,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:57,284 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:25:57,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:25:57,286 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:25:57,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-03 02:25:57,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:57,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 02:25:57,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:25:57,490 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-03 02:25:57,490 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:25:57,490 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:25:57,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [752822306] [2022-11-03 02:25:57,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [752822306] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:25:57,490 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:25:57,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-03 02:25:57,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948093968] [2022-11-03 02:25:57,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:25:57,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-03 02:25:57,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:25:57,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-03 02:25:57,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-11-03 02:25:57,492 INFO L87 Difference]: Start difference. First operand 97 states and 125 transitions. Second operand has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 9 states have internal predecessors, (28), 3 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-03 02:25:57,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:57,821 INFO L93 Difference]: Finished difference Result 133 states and 172 transitions. [2022-11-03 02:25:57,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-03 02:25:57,822 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 9 states have internal predecessors, (28), 3 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 44 [2022-11-03 02:25:57,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:57,824 INFO L225 Difference]: With dead ends: 133 [2022-11-03 02:25:57,824 INFO L226 Difference]: Without dead ends: 126 [2022-11-03 02:25:57,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-11-03 02:25:57,825 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 33 mSDsluCounter, 597 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 669 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:57,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 669 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:25:57,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-11-03 02:25:57,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 99. [2022-11-03 02:25:57,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 72 states have (on average 1.2361111111111112) internal successors, (89), 75 states have internal predecessors, (89), 16 states have call successors, (16), 7 states have call predecessors, (16), 10 states have return successors, (22), 16 states have call predecessors, (22), 15 states have call successors, (22) [2022-11-03 02:25:57,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 127 transitions. [2022-11-03 02:25:57,845 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 127 transitions. Word has length 44 [2022-11-03 02:25:57,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:57,845 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 127 transitions. [2022-11-03 02:25:57,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 9 states have internal predecessors, (28), 3 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-03 02:25:57,846 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 127 transitions. [2022-11-03 02:25:57,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-03 02:25:57,847 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:57,847 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:25:57,867 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-03 02:25:58,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:25:58,067 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:58,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:58,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1849173563, now seen corresponding path program 1 times [2022-11-03 02:25:58,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:25:58,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [295113159] [2022-11-03 02:25:58,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:58,068 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:25:58,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:25:58,069 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:25:58,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-03 02:25:58,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 02:25:58,135 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-03 02:25:58,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 02:25:58,258 INFO L130 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2022-11-03 02:25:58,258 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-03 02:25:58,259 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-03 02:25:58,281 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-03 02:25:58,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:25:58,465 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1] [2022-11-03 02:25:58,469 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 02:25:58,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 02:25:58 BoogieIcfgContainer [2022-11-03 02:25:58,507 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 02:25:58,507 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 02:25:58,507 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 02:25:58,508 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 02:25:58,508 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:25:50" (3/4) ... [2022-11-03 02:25:58,510 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-03 02:25:58,572 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/witness.graphml [2022-11-03 02:25:58,572 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 02:25:58,573 INFO L158 Benchmark]: Toolchain (without parser) took 9587.11ms. Allocated memory was 56.6MB in the beginning and 83.9MB in the end (delta: 27.3MB). Free memory was 33.3MB in the beginning and 56.4MB in the end (delta: -23.1MB). Peak memory consumption was 4.7MB. Max. memory is 16.1GB. [2022-11-03 02:25:58,573 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 56.6MB. Free memory is still 36.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 02:25:58,574 INFO L158 Benchmark]: CACSL2BoogieTranslator took 500.53ms. Allocated memory is still 56.6MB. Free memory was 33.0MB in the beginning and 36.7MB in the end (delta: -3.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-03 02:25:58,574 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.92ms. Allocated memory is still 56.6MB. Free memory was 36.7MB in the beginning and 35.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 02:25:58,575 INFO L158 Benchmark]: Boogie Preprocessor took 54.60ms. Allocated memory is still 56.6MB. Free memory was 35.1MB in the beginning and 33.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 02:25:58,575 INFO L158 Benchmark]: RCFGBuilder took 592.50ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 33.6MB in the beginning and 45.1MB in the end (delta: -11.5MB). Peak memory consumption was 11.9MB. Max. memory is 16.1GB. [2022-11-03 02:25:58,576 INFO L158 Benchmark]: TraceAbstraction took 8298.30ms. Allocated memory was 69.2MB in the beginning and 83.9MB in the end (delta: 14.7MB). Free memory was 44.2MB in the beginning and 59.2MB in the end (delta: -14.9MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2022-11-03 02:25:58,576 INFO L158 Benchmark]: Witness Printer took 65.40ms. Allocated memory is still 83.9MB. Free memory was 59.2MB in the beginning and 56.4MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 02:25:58,578 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 56.6MB. Free memory is still 36.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 500.53ms. Allocated memory is still 56.6MB. Free memory was 33.0MB in the beginning and 36.7MB in the end (delta: -3.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 61.92ms. Allocated memory is still 56.6MB. Free memory was 36.7MB in the beginning and 35.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 54.60ms. Allocated memory is still 56.6MB. Free memory was 35.1MB in the beginning and 33.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 592.50ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 33.6MB in the beginning and 45.1MB in the end (delta: -11.5MB). Peak memory consumption was 11.9MB. Max. memory is 16.1GB. * TraceAbstraction took 8298.30ms. Allocated memory was 69.2MB in the beginning and 83.9MB in the end (delta: 14.7MB). Free memory was 44.2MB in the beginning and 59.2MB in the end (delta: -14.9MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Witness Printer took 65.40ms. Allocated memory is still 83.9MB. Free memory was 59.2MB in the beginning and 56.4MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 17]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L226] unsigned int a ; [L227] unsigned int ma = __VERIFIER_nondet_uint(); [L228] signed char ea = __VERIFIER_nondet_char(); [L229] unsigned int b ; [L230] unsigned int mb = __VERIFIER_nondet_uint(); [L231] signed char eb = __VERIFIER_nondet_char(); [L232] unsigned int r_add1 ; [L233] unsigned int r_add2 ; [L234] unsigned int zero ; [L235] int tmp ; [L236] int tmp___0 ; [L237] int __retres14 ; [L241] CALL, EXPR base2flt(0, 0) VAL [\old(e)=0, \old(m)=0] [L25] unsigned int res ; [L26] unsigned int __retres4 ; VAL [\old(e)=0, \old(m)=0, e=0, m=0] [L29] COND TRUE ! m [L30] __retres4 = 0U VAL [\old(e)=0, \old(m)=0, __retres4=0, e=0, m=0] [L80] return (__retres4); VAL [\old(e)=0, \old(m)=0, \result=0, __retres4=0, e=0, m=0] [L241] RET, EXPR base2flt(0, 0) VAL [base2flt(0, 0)=0] [L241] zero = base2flt(0, 0) [L242] CALL, EXPR base2flt(ma, ea) VAL [\old(e)=0, \old(m)=16777216] [L25] unsigned int res ; [L26] unsigned int __retres4 ; VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L29] COND FALSE !(! m) VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L35] COND FALSE !(m < 1U << 24U) VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L57] COND TRUE 1 VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L59] COND FALSE !(m >= 1U << 25U) VAL [\old(e)=0, \old(m)=16777216, e=0, m=16777216] [L76] m = m & ~ (1U << 24U) [L77] res = m | ((unsigned int )(e + 128) << 24U) [L78] __retres4 = res VAL [\old(e)=0, \old(m)=16777216, __retres4=2147483648, e=0, m=0, res=2147483648] [L80] return (__retres4); VAL [\old(e)=0, \old(m)=16777216, \result=-2147483648, __retres4=2147483648, e=0, m=0, res=2147483648] [L242] RET, EXPR base2flt(ma, ea) VAL [base2flt(ma, ea)=-2147483648, ea=0, ma=16777216, zero=0] [L242] a = base2flt(ma, ea) [L243] CALL, EXPR base2flt(mb, eb) VAL [\old(e)=64, \old(m)=16777216] [L25] unsigned int res ; [L26] unsigned int __retres4 ; VAL [\old(e)=64, \old(m)=16777216, e=64, m=16777216] [L29] COND FALSE !(! m) VAL [\old(e)=64, \old(m)=16777216, e=64, m=16777216] [L35] COND FALSE !(m < 1U << 24U) VAL [\old(e)=64, \old(m)=16777216, e=64, m=16777216] [L57] COND TRUE 1 VAL [\old(e)=64, \old(m)=16777216, e=64, m=16777216] [L59] COND FALSE !(m >= 1U << 25U) VAL [\old(e)=64, \old(m)=16777216, e=64, m=16777216] [L76] m = m & ~ (1U << 24U) [L77] res = m | ((unsigned int )(e + 128) << 24U) [L78] __retres4 = res VAL [\old(e)=64, \old(m)=16777216, __retres4=3221225472, e=64, m=0, res=3221225472] [L80] return (__retres4); VAL [\old(e)=64, \old(m)=16777216, \result=-1073741824, __retres4=3221225472, e=64, m=0, res=3221225472] [L243] RET, EXPR base2flt(mb, eb) VAL [a=2147483648, base2flt(mb, eb)=-1073741824, ea=0, eb=64, ma=16777216, mb=16777216, zero=0] [L243] b = base2flt(mb, eb) [L244] CALL addflt(a, b) VAL [\old(a)=2147483648, \old(b)=3221225472] [L84] unsigned int res ; [L85] unsigned int ma ; [L86] unsigned int mb ; [L87] unsigned int delta ; [L88] int ea ; [L89] int eb ; [L90] unsigned int tmp ; [L91] unsigned int __retres10 ; VAL [\old(a)=2147483648, \old(b)=3221225472, a=2147483648, b=3221225472] [L94] COND TRUE a < b [L95] tmp = a [L96] a = b [L97] b = tmp VAL [\old(a)=2147483648, \old(b)=3221225472, a=3221225472, b=2147483648, tmp=2147483648] [L101] COND FALSE !(! b) [L108] ma = a & ((1U << 24U) - 1U) [L109] ea = (int )(a >> 24U) - 128 [L110] ma = ma | (1U << 24U) [L111] mb = b & ((1U << 24U) - 1U) [L112] eb = (int )(b >> 24U) - 128 [L113] mb = mb | (1U << 24U) VAL [\old(a)=2147483648, \old(b)=3221225472, a=3221225472, b=2147483648, ea=64, eb=0, ma=16777216, mb=16777216, tmp=2147483648] [L114] CALL __VERIFIER_assert(ea >= eb) VAL [\old(cond)=1] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L114] RET __VERIFIER_assert(ea >= eb) VAL [\old(a)=2147483648, \old(b)=3221225472, a=3221225472, b=2147483648, ea=64, eb=0, ma=16777216, mb=16777216, tmp=2147483648] [L115] delta = ea - eb VAL [\old(a)=2147483648, \old(b)=3221225472, a=3221225472, b=2147483648, delta=64, ea=64, eb=0, ma=16777216, mb=16777216, tmp=2147483648] [L116] CALL __VERIFIER_assert(delta < sizeof(mb) * 8) VAL [\old(cond)=0] [L16] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L17] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 54 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 8.1s, OverallIterations: 8, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 179 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 161 mSDsluCounter, 3275 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 25 IncrementalHoareTripleChecker+Unchecked, 2788 mSDsCounter, 24 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 607 IncrementalHoareTripleChecker+Invalid, 656 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 24 mSolverCounterUnsat, 487 mSDtfsCounter, 607 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 749 GetRequests, 681 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=99occurred in iteration=7, InterpolantAutomatonStates: 63, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 7 MinimizatonAttempts, 112 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 513 NumberOfCodeBlocks, 495 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 725 ConstructedInterpolants, 2 QuantifiedInterpolants, 1208 SizeOfPredicates, 36 NumberOfNonLiveVariables, 954 ConjunctsInSsa, 97 ConjunctsInUnsatCore, 19 InterpolantComputations, 5 PerfectInterpolantSequences, 302/344 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-11-03 02:25:58,619 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96116f2d-9f59-4bfe-9db5-df201d66c1ef/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE