./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/rule57_ebda_blast_2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 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_dd3a4b44-d79d-4fdb-a46f-b030fea7a92b/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3a4b44-d79d-4fdb-a46f-b030fea7a92b/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3a4b44-d79d-4fdb-a46f-b030fea7a92b/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3a4b44-d79d-4fdb-a46f-b030fea7a92b/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/rule57_ebda_blast_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3a4b44-d79d-4fdb-a46f-b030fea7a92b/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3a4b44-d79d-4fdb-a46f-b030fea7a92b/bin/utaipan-Q6hlc19bkW --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 18e93ea431e83188bc36b5e920f02065de4d876f2ec76df16cf4e34ae99f6b21 --- 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-4e7fbc6 [2022-11-23 14:26:50,870 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:26:50,872 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:26:50,892 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:26:50,892 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:26:50,894 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:26:50,895 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:26:50,897 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:26:50,898 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:26:50,899 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:26:50,900 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:26:50,901 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:26:50,902 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:26:50,903 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:26:50,904 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:26:50,905 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:26:50,906 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:26:50,907 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:26:50,909 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:26:50,911 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:26:50,912 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:26:50,918 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:26:50,919 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:26:50,920 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:26:50,924 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:26:50,924 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:26:50,925 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:26:50,926 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:26:50,926 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:26:50,927 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:26:50,928 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:26:50,929 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:26:50,930 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:26:50,939 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:26:50,941 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:26:50,941 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:26:50,942 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:26:50,942 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:26:50,944 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:26:50,947 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:26:50,948 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:26:50,950 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3a4b44-d79d-4fdb-a46f-b030fea7a92b/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-23 14:26:50,995 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:26:50,995 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:26:50,996 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:26:50,996 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:26:50,997 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:26:50,997 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:26:50,998 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:26:50,998 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:26:50,998 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:26:50,998 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 14:26:50,999 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:26:51,000 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:26:51,001 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 14:26:51,001 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 14:26:51,001 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:26:51,001 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 14:26:51,002 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 14:26:51,002 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 14:26:51,003 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:26:51,004 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 14:26:51,004 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 14:26:51,004 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 14:26:51,004 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:26:51,005 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 14:26:51,005 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:26:51,005 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 14:26:51,006 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 14:26:51,006 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 14:26:51,006 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:26:51,007 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 14:26:51,007 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:26:51,007 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:26:51,008 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:26:51,008 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:26:51,008 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 14:26:51,008 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:26:51,009 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 14:26:51,009 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 14:26:51,009 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 14:26:51,009 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 14:26:51,010 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:26:51,011 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_dd3a4b44-d79d-4fdb-a46f-b030fea7a92b/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3a4b44-d79d-4fdb-a46f-b030fea7a92b/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 18e93ea431e83188bc36b5e920f02065de4d876f2ec76df16cf4e34ae99f6b21 [2022-11-23 14:26:51,331 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:26:51,368 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:26:51,371 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:26:51,372 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:26:51,373 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:26:51,374 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3a4b44-d79d-4fdb-a46f-b030fea7a92b/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/ldv-regression/rule57_ebda_blast_2.i [2022-11-23 14:26:54,394 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:26:54,589 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:26:54,589 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3a4b44-d79d-4fdb-a46f-b030fea7a92b/sv-benchmarks/c/ldv-regression/rule57_ebda_blast_2.i [2022-11-23 14:26:54,595 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3a4b44-d79d-4fdb-a46f-b030fea7a92b/bin/utaipan-Q6hlc19bkW/data/09b0e9e28/10e9d10113d54b469abcb81e1c11b1b5/FLAG54bf2eb22 [2022-11-23 14:26:54,608 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3a4b44-d79d-4fdb-a46f-b030fea7a92b/bin/utaipan-Q6hlc19bkW/data/09b0e9e28/10e9d10113d54b469abcb81e1c11b1b5 [2022-11-23 14:26:54,611 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:26:54,613 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:26:54,614 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:26:54,614 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:26:54,618 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:26:54,619 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:26:54" (1/1) ... [2022-11-23 14:26:54,620 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a35b741 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:54, skipping insertion in model container [2022-11-23 14:26:54,620 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:26:54" (1/1) ... [2022-11-23 14:26:54,628 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:26:54,645 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:26:54,782 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3a4b44-d79d-4fdb-a46f-b030fea7a92b/sv-benchmarks/c/ldv-regression/rule57_ebda_blast_2.i[341,354] [2022-11-23 14:26:54,813 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:26:54,826 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 14:26:54,837 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3a4b44-d79d-4fdb-a46f-b030fea7a92b/sv-benchmarks/c/ldv-regression/rule57_ebda_blast_2.i[341,354] [2022-11-23 14:26:54,848 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:26:54,864 INFO L208 MainTranslator]: Completed translation [2022-11-23 14:26:54,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:54 WrapperNode [2022-11-23 14:26:54,865 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:26:54,866 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 14:26:54,866 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 14:26:54,866 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 14:26:54,874 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:54" (1/1) ... [2022-11-23 14:26:54,882 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:54" (1/1) ... [2022-11-23 14:26:54,905 INFO L138 Inliner]: procedures = 24, calls = 25, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 105 [2022-11-23 14:26:54,905 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 14:26:54,906 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 14:26:54,906 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 14:26:54,906 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 14:26:54,915 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:54" (1/1) ... [2022-11-23 14:26:54,916 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:54" (1/1) ... [2022-11-23 14:26:54,919 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:54" (1/1) ... [2022-11-23 14:26:54,919 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:54" (1/1) ... [2022-11-23 14:26:54,926 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:54" (1/1) ... [2022-11-23 14:26:54,928 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:54" (1/1) ... [2022-11-23 14:26:54,930 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:54" (1/1) ... [2022-11-23 14:26:54,931 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:54" (1/1) ... [2022-11-23 14:26:54,933 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 14:26:54,951 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 14:26:54,951 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 14:26:54,952 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 14:26:54,952 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:54" (1/1) ... [2022-11-23 14:26:54,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:26:54,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3a4b44-d79d-4fdb-a46f-b030fea7a92b/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:26:54,988 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3a4b44-d79d-4fdb-a46f-b030fea7a92b/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 14:26:55,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3a4b44-d79d-4fdb-a46f-b030fea7a92b/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 14:26:55,038 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 14:26:55,038 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 14:26:55,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 14:26:55,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 14:26:55,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 14:26:55,039 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 14:26:55,039 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-23 14:26:55,039 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-23 14:26:55,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 14:26:55,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 14:26:55,160 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 14:26:55,162 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 14:26:55,475 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 14:26:55,575 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 14:26:55,576 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 14:26:55,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:26:55 BoogieIcfgContainer [2022-11-23 14:26:55,579 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 14:26:55,581 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 14:26:55,582 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 14:26:55,585 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 14:26:55,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:26:54" (1/3) ... [2022-11-23 14:26:55,586 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bbe9379 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:26:55, skipping insertion in model container [2022-11-23 14:26:55,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:26:54" (2/3) ... [2022-11-23 14:26:55,587 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bbe9379 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:26:55, skipping insertion in model container [2022-11-23 14:26:55,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:26:55" (3/3) ... [2022-11-23 14:26:55,589 INFO L112 eAbstractionObserver]: Analyzing ICFG rule57_ebda_blast_2.i [2022-11-23 14:26:55,626 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 14:26:55,626 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 14:26:55,688 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:26:55,697 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;@1761847a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:26:55,697 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 14:26:55,703 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 20 states have internal predecessors, (28), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 14:26:55,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-23 14:26:55,710 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:26:55,711 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:26:55,712 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:26:55,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:26:55,719 INFO L85 PathProgramCache]: Analyzing trace with hash -814204755, now seen corresponding path program 1 times [2022-11-23 14:26:55,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:26:55,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083146737] [2022-11-23 14:26:55,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:26:55,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:26:55,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:26:56,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:26:56,049 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:26:56,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083146737] [2022-11-23 14:26:56,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083146737] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:26:56,050 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:26:56,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 14:26:56,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790799305] [2022-11-23 14:26:56,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:26:56,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:26:56,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:26:56,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:26:56,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:26:56,118 INFO L87 Difference]: Start difference. First operand has 25 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 20 states have internal predecessors, (28), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 14:26:56,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:26:56,224 INFO L93 Difference]: Finished difference Result 33 states and 43 transitions. [2022-11-23 14:26:56,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 14:26:56,226 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-11-23 14:26:56,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:26:56,235 INFO L225 Difference]: With dead ends: 33 [2022-11-23 14:26:56,235 INFO L226 Difference]: Without dead ends: 23 [2022-11-23 14:26:56,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:26:56,245 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 23 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:26:56,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 72 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:26:56,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-11-23 14:26:56,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-11-23 14:26:56,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 14:26:56,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 29 transitions. [2022-11-23 14:26:56,293 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 29 transitions. Word has length 11 [2022-11-23 14:26:56,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:26:56,295 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 29 transitions. [2022-11-23 14:26:56,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 14:26:56,296 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 29 transitions. [2022-11-23 14:26:56,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-23 14:26:56,299 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:26:56,299 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:26:56,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 14:26:56,300 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:26:56,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:26:56,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1204054268, now seen corresponding path program 1 times [2022-11-23 14:26:56,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:26:56,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088332897] [2022-11-23 14:26:56,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:26:56,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:26:56,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:26:56,507 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 14:26:56,508 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:26:56,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088332897] [2022-11-23 14:26:56,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088332897] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:26:56,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:26:56,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 14:26:56,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934951766] [2022-11-23 14:26:56,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:26:56,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:26:56,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:26:56,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:26:56,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:26:56,512 INFO L87 Difference]: Start difference. First operand 23 states and 29 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-23 14:26:56,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:26:56,569 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2022-11-23 14:26:56,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 14:26:56,570 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2022-11-23 14:26:56,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:26:56,571 INFO L225 Difference]: With dead ends: 31 [2022-11-23 14:26:56,571 INFO L226 Difference]: Without dead ends: 25 [2022-11-23 14:26:56,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-23 14:26:56,573 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 19 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:26:56,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 65 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 14:26:56,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-11-23 14:26:56,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-11-23 14:26:56,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 states have internal predecessors, (23), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-23 14:26:56,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2022-11-23 14:26:56,581 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 16 [2022-11-23 14:26:56,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:26:56,582 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2022-11-23 14:26:56,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-23 14:26:56,582 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2022-11-23 14:26:56,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-23 14:26:56,583 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:26:56,583 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:26:56,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 14:26:56,584 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:26:56,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:26:56,584 INFO L85 PathProgramCache]: Analyzing trace with hash 375204188, now seen corresponding path program 1 times [2022-11-23 14:26:56,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:26:56,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484114161] [2022-11-23 14:26:56,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:26:56,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:26:56,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 14:26:56,651 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 14:26:56,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 14:26:56,738 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-23 14:26:56,738 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 14:26:56,739 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-23 14:26:56,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 14:26:56,744 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-23 14:26:56,748 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 14:26:56,756 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2022-11-23 14:26:56,757 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2022-11-23 14:26:56,758 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2022-11-23 14:26:56,758 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2022-11-23 14:26:56,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:26:56 BoogieIcfgContainer [2022-11-23 14:26:56,779 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 14:26:56,780 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 14:26:56,780 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 14:26:56,780 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 14:26:56,780 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:26:55" (3/4) ... [2022-11-23 14:26:56,782 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-23 14:26:56,784 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2022-11-23 14:26:56,784 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2022-11-23 14:26:56,785 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2022-11-23 14:26:56,785 WARN L421 cessorBacktranslator]: Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled [2022-11-23 14:26:56,828 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3a4b44-d79d-4fdb-a46f-b030fea7a92b/bin/utaipan-Q6hlc19bkW/witness.graphml [2022-11-23 14:26:56,828 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 14:26:56,829 INFO L158 Benchmark]: Toolchain (without parser) took 2216.33ms. Allocated memory is still 184.5MB. Free memory was 139.7MB in the beginning and 97.7MB in the end (delta: 42.0MB). Peak memory consumption was 43.2MB. Max. memory is 16.1GB. [2022-11-23 14:26:56,829 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 130.0MB. Free memory was 72.2MB in the beginning and 72.1MB in the end (delta: 117.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 14:26:56,830 INFO L158 Benchmark]: CACSL2BoogieTranslator took 251.05ms. Allocated memory is still 184.5MB. Free memory was 139.2MB in the beginning and 128.3MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-23 14:26:56,830 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.39ms. Allocated memory is still 184.5MB. Free memory was 128.3MB in the beginning and 126.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 14:26:56,830 INFO L158 Benchmark]: Boogie Preprocessor took 44.65ms. Allocated memory is still 184.5MB. Free memory was 126.2MB in the beginning and 125.1MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 14:26:56,831 INFO L158 Benchmark]: RCFGBuilder took 627.86ms. Allocated memory is still 184.5MB. Free memory was 125.1MB in the beginning and 106.8MB in the end (delta: 18.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-23 14:26:56,831 INFO L158 Benchmark]: TraceAbstraction took 1197.52ms. Allocated memory is still 184.5MB. Free memory was 106.2MB in the beginning and 100.8MB in the end (delta: 5.4MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. [2022-11-23 14:26:56,832 INFO L158 Benchmark]: Witness Printer took 48.78ms. Allocated memory is still 184.5MB. Free memory was 100.8MB in the beginning and 97.7MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 14:26:56,834 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 130.0MB. Free memory was 72.2MB in the beginning and 72.1MB in the end (delta: 117.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 251.05ms. Allocated memory is still 184.5MB. Free memory was 139.2MB in the beginning and 128.3MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.39ms. Allocated memory is still 184.5MB. Free memory was 128.3MB in the beginning and 126.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.65ms. Allocated memory is still 184.5MB. Free memory was 126.2MB in the beginning and 125.1MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 627.86ms. Allocated memory is still 184.5MB. Free memory was 125.1MB in the beginning and 106.8MB in the end (delta: 18.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 1197.52ms. Allocated memory is still 184.5MB. Free memory was 106.2MB in the beginning and 100.8MB in the end (delta: 5.4MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. * Witness Printer took 48.78ms. Allocated memory is still 184.5MB. Free memory was 100.8MB in the beginning and 97.7MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Nested struct field access of VarList #Ultimate.meminit_#ptr#1 : $Pointer$ not handled * 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: 9]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L42] struct slot *tmp_slot; [L43] int used_tmp_slot = 0; [L44] int freed_tmp_slot = 1; [L138] CALL ebda_rsrc_controller() [L75] struct hotplug_slot *hp_slot_ptr; [L77] struct bus_info *bus_info_ptr1; [L78] int rc; VAL [freed_tmp_slot=1, tmp_slot={0:0}, used_tmp_slot=0] [L80] CALL, EXPR kzalloc(sizeof(*hp_slot_ptr), 1) VAL [freed_tmp_slot=1, tmp_slot={0:0}, used_tmp_slot=0] [L49] EXPR, FCALL calloc(1, size) [L49] return calloc(1, size); [L80] RET, EXPR kzalloc(sizeof(*hp_slot_ptr), 1) VAL [freed_tmp_slot=1, kzalloc(sizeof(*hp_slot_ptr), 1)={-1:0}, tmp_slot={0:0}, used_tmp_slot=0] [L80] hp_slot_ptr = kzalloc(sizeof(*hp_slot_ptr), 1) [L81] COND FALSE !(!hp_slot_ptr) [L85] hp_slot_ptr->b = 5 VAL [freed_tmp_slot=1, hp_slot_ptr={-1:0}, tmp_slot={0:0}, used_tmp_slot=0] [L87] CALL, EXPR kzalloc(sizeof(*tmp_slot), 1) VAL [freed_tmp_slot=1, tmp_slot={0:0}, used_tmp_slot=0] [L49] EXPR, FCALL calloc(1, size) [L49] return calloc(1, size); [L87] RET, EXPR kzalloc(sizeof(*tmp_slot), 1) VAL [freed_tmp_slot=1, hp_slot_ptr={-1:0}, kzalloc(sizeof(*tmp_slot), 1)={-2:0}, tmp_slot={0:0}, used_tmp_slot=0] [L87] tmp_slot = kzalloc(sizeof(*tmp_slot), 1) [L89] COND FALSE !(!tmp_slot) [L94] used_tmp_slot = 0 [L95] freed_tmp_slot = 0 [L97] tmp_slot->a = 2 [L98] tmp_slot->b = 3 [L100] CALL, EXPR ibmphp_find_same_bus_num() [L58] COND TRUE __VERIFIER_nondet_int() [L59] return 0; VAL [\result={0:0}, freed_tmp_slot=0, tmp_slot={-2:0}, used_tmp_slot=0] [L100] RET, EXPR ibmphp_find_same_bus_num() [L100] bus_info_ptr1 = ibmphp_find_same_bus_num() [L101] COND TRUE !bus_info_ptr1 [L102] rc = -3 VAL [bus_info_ptr1={0:0}, freed_tmp_slot=0, hp_slot_ptr={-1:0}, rc=-3, tmp_slot={-2:0}, used_tmp_slot=0] [L129] EXPR hp_slot_ptr->private [L129] CALL kfree(hp_slot_ptr->private) [L52] COND FALSE !(p!=0 && p==tmp_slot) [L129] RET kfree(hp_slot_ptr->private) [L134] return rc; VAL [\result=-3, bus_info_ptr1={0:0}, freed_tmp_slot=0, hp_slot_ptr={-1:0}, rc=-3, tmp_slot={-2:0}, used_tmp_slot=0] [L138] RET ebda_rsrc_controller() [L139] COND TRUE !used_tmp_slot VAL [freed_tmp_slot=0, tmp_slot={-2:0}, used_tmp_slot=0] [L140] (freed_tmp_slot) ? (0) : __blast_assert () [L140] CALL __blast_assert () [L9] reach_error() VAL [freed_tmp_slot=0, tmp_slot={-2:0}, used_tmp_slot=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.1s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 45 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 42 mSDsluCounter, 137 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 92 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 55 IncrementalHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 45 mSDtfsCounter, 55 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=0, InterpolantAutomatonStates: 11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 25 ConstructedInterpolants, 0 QuantifiedInterpolants, 43 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 2/2 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! [2022-11-23 14:26:56,859 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dd3a4b44-d79d-4fdb-a46f-b030fea7a92b/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE