./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/test23-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1f8974-5854-4b32-a76f-f0ad113118ad/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1f8974-5854-4b32-a76f-f0ad113118ad/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1f8974-5854-4b32-a76f-f0ad113118ad/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1f8974-5854-4b32-a76f-f0ad113118ad/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/test23-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1f8974-5854-4b32-a76f-f0ad113118ad/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1f8974-5854-4b32-a76f-f0ad113118ad/bin/utaipan-6cKwYrpEi9 --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 6107b0424f9f7d96b4a493f3ee8e42c81c6509c50d1ec834cc7d1fa0b8a2c5d3 --- 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-6b4ec56 [2022-11-20 20:51:21,898 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 20:51:21,913 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 20:51:21,940 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 20:51:21,940 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 20:51:21,945 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 20:51:21,950 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 20:51:21,956 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 20:51:21,959 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 20:51:21,961 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 20:51:21,963 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 20:51:21,965 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 20:51:21,965 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 20:51:21,967 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 20:51:21,968 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 20:51:21,969 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 20:51:21,971 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 20:51:21,972 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 20:51:21,974 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 20:51:21,976 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 20:51:21,978 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 20:51:21,999 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 20:51:22,001 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 20:51:22,002 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 20:51:22,006 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 20:51:22,010 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 20:51:22,011 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 20:51:22,012 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 20:51:22,013 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 20:51:22,016 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 20:51:22,017 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 20:51:22,019 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 20:51:22,020 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 20:51:22,022 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 20:51:22,024 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 20:51:22,026 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 20:51:22,027 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 20:51:22,027 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 20:51:22,027 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 20:51:22,030 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 20:51:22,031 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 20:51:22,032 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1f8974-5854-4b32-a76f-f0ad113118ad/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-20 20:51:22,082 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 20:51:22,088 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 20:51:22,089 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 20:51:22,089 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 20:51:22,091 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 20:51:22,091 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 20:51:22,091 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 20:51:22,092 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 20:51:22,092 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 20:51:22,092 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 20:51:22,093 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 20:51:22,094 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 20:51:22,094 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 20:51:22,094 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 20:51:22,095 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 20:51:22,095 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 20:51:22,095 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 20:51:22,095 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 20:51:22,097 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 20:51:22,097 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 20:51:22,097 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 20:51:22,098 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 20:51:22,098 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 20:51:22,098 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 20:51:22,098 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 20:51:22,099 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 20:51:22,100 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 20:51:22,100 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 20:51:22,100 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 20:51:22,101 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 20:51:22,101 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 20:51:22,101 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 20:51:22,102 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:51:22,102 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 20:51:22,102 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 20:51:22,103 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 20:51:22,103 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 20:51:22,103 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 20:51:22,103 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 20:51:22,104 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 20:51:22,104 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 20:51:22,104 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_6d1f8974-5854-4b32-a76f-f0ad113118ad/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1f8974-5854-4b32-a76f-f0ad113118ad/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6107b0424f9f7d96b4a493f3ee8e42c81c6509c50d1ec834cc7d1fa0b8a2c5d3 [2022-11-20 20:51:22,465 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 20:51:22,505 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 20:51:22,508 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 20:51:22,509 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 20:51:22,510 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 20:51:22,511 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1f8974-5854-4b32-a76f-f0ad113118ad/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/ldv-regression/test23-2.c [2022-11-20 20:51:25,697 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 20:51:25,957 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 20:51:25,958 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1f8974-5854-4b32-a76f-f0ad113118ad/sv-benchmarks/c/ldv-regression/test23-2.c [2022-11-20 20:51:25,964 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1f8974-5854-4b32-a76f-f0ad113118ad/bin/utaipan-6cKwYrpEi9/data/447799cb5/be45e8f3dbc1474b9830e0fe7ccdb1cb/FLAG2fd7e9046 [2022-11-20 20:51:25,979 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1f8974-5854-4b32-a76f-f0ad113118ad/bin/utaipan-6cKwYrpEi9/data/447799cb5/be45e8f3dbc1474b9830e0fe7ccdb1cb [2022-11-20 20:51:25,981 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 20:51:25,983 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 20:51:25,984 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 20:51:25,984 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 20:51:25,988 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 20:51:25,989 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:51:25" (1/1) ... [2022-11-20 20:51:25,990 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b41ac50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:51:25, skipping insertion in model container [2022-11-20 20:51:25,991 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:51:25" (1/1) ... [2022-11-20 20:51:25,998 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 20:51:26,011 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 20:51:26,158 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_6d1f8974-5854-4b32-a76f-f0ad113118ad/sv-benchmarks/c/ldv-regression/test23-2.c[1070,1083] [2022-11-20 20:51:26,162 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:51:26,173 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 20:51:26,191 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_6d1f8974-5854-4b32-a76f-f0ad113118ad/sv-benchmarks/c/ldv-regression/test23-2.c[1070,1083] [2022-11-20 20:51:26,191 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:51:26,205 INFO L208 MainTranslator]: Completed translation [2022-11-20 20:51:26,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:51:26 WrapperNode [2022-11-20 20:51:26,206 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 20:51:26,207 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 20:51:26,207 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 20:51:26,207 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 20:51:26,213 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:51:26" (1/1) ... [2022-11-20 20:51:26,220 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:51:26" (1/1) ... [2022-11-20 20:51:26,239 INFO L138 Inliner]: procedures = 16, calls = 21, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 73 [2022-11-20 20:51:26,240 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 20:51:26,241 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 20:51:26,241 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 20:51:26,241 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 20:51:26,250 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:51:26" (1/1) ... [2022-11-20 20:51:26,251 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:51:26" (1/1) ... [2022-11-20 20:51:26,252 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:51:26" (1/1) ... [2022-11-20 20:51:26,253 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:51:26" (1/1) ... [2022-11-20 20:51:26,258 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:51:26" (1/1) ... [2022-11-20 20:51:26,261 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:51:26" (1/1) ... [2022-11-20 20:51:26,262 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:51:26" (1/1) ... [2022-11-20 20:51:26,263 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:51:26" (1/1) ... [2022-11-20 20:51:26,276 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 20:51:26,277 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 20:51:26,277 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 20:51:26,277 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 20:51:26,278 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:51:26" (1/1) ... [2022-11-20 20:51:26,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:51:26,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1f8974-5854-4b32-a76f-f0ad113118ad/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:51:26,310 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1f8974-5854-4b32-a76f-f0ad113118ad/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 20:51:26,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1f8974-5854-4b32-a76f-f0ad113118ad/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 20:51:26,355 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 20:51:26,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 20:51:26,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 20:51:26,356 INFO L130 BoogieDeclarations]: Found specification of procedure get_dummy [2022-11-20 20:51:26,356 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dummy [2022-11-20 20:51:26,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 20:51:26,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 20:51:26,357 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 20:51:26,439 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 20:51:26,441 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 20:51:26,705 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 20:51:26,788 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 20:51:26,788 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 20:51:26,791 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:51:26 BoogieIcfgContainer [2022-11-20 20:51:26,791 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 20:51:26,794 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 20:51:26,794 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 20:51:26,798 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 20:51:26,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 08:51:25" (1/3) ... [2022-11-20 20:51:26,812 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c64b1d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:51:26, skipping insertion in model container [2022-11-20 20:51:26,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:51:26" (2/3) ... [2022-11-20 20:51:26,813 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c64b1d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:51:26, skipping insertion in model container [2022-11-20 20:51:26,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:51:26" (3/3) ... [2022-11-20 20:51:26,814 INFO L112 eAbstractionObserver]: Analyzing ICFG test23-2.c [2022-11-20 20:51:26,832 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 20:51:26,832 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 20:51:26,879 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 20:51:26,886 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;@1d6dfd1b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 20:51:26,887 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 20:51:26,891 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 20:51:26,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-20 20:51:26,899 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:51:26,900 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:51:26,900 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:51:26,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:51:26,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1953466018, now seen corresponding path program 1 times [2022-11-20 20:51:26,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:51:26,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573973109] [2022-11-20 20:51:26,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:51:26,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:51:27,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:51:27,229 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 20:51:27,230 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:51:27,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573973109] [2022-11-20 20:51:27,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573973109] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:51:27,232 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:51:27,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 20:51:27,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266929832] [2022-11-20 20:51:27,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:51:27,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 20:51:27,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:51:27,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 20:51:27,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 20:51:27,303 INFO L87 Difference]: Start difference. First operand has 17 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 20:51:27,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:51:27,347 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2022-11-20 20:51:27,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 20:51:27,350 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 14 [2022-11-20 20:51:27,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:51:27,396 INFO L225 Difference]: With dead ends: 24 [2022-11-20 20:51:27,396 INFO L226 Difference]: Without dead ends: 14 [2022-11-20 20:51:27,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 20:51:27,416 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 20:51:27,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 15 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 20:51:27,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-11-20 20:51:27,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-11-20 20:51:27,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 20:51:27,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2022-11-20 20:51:27,512 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 14 [2022-11-20 20:51:27,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:51:27,514 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2022-11-20 20:51:27,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 20:51:27,514 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2022-11-20 20:51:27,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-20 20:51:27,515 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:51:27,516 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:51:27,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 20:51:27,516 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:51:27,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:51:27,518 INFO L85 PathProgramCache]: Analyzing trace with hash -435187080, now seen corresponding path program 1 times [2022-11-20 20:51:27,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:51:27,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017288131] [2022-11-20 20:51:27,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:51:27,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:51:27,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:51:28,329 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 20:51:28,329 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:51:28,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017288131] [2022-11-20 20:51:28,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017288131] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:51:28,330 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:51:28,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 20:51:28,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800763716] [2022-11-20 20:51:28,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:51:28,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 20:51:28,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:51:28,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 20:51:28,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 20:51:28,334 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 20:51:28,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:51:28,419 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2022-11-20 20:51:28,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 20:51:28,420 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 15 [2022-11-20 20:51:28,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:51:28,421 INFO L225 Difference]: With dead ends: 20 [2022-11-20 20:51:28,422 INFO L226 Difference]: Without dead ends: 16 [2022-11-20 20:51:28,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 20:51:28,426 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 1 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 20:51:28,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 24 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 20:51:28,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-11-20 20:51:28,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-11-20 20:51:28,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 20:51:28,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2022-11-20 20:51:28,447 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 15 [2022-11-20 20:51:28,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:51:28,450 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2022-11-20 20:51:28,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 20:51:28,450 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2022-11-20 20:51:28,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-20 20:51:28,455 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:51:28,455 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:51:28,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 20:51:28,456 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:51:28,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:51:28,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1574645037, now seen corresponding path program 1 times [2022-11-20 20:51:28,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:51:28,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759463676] [2022-11-20 20:51:28,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:51:28,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:51:28,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:51:28,945 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 20:51:28,946 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:51:28,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759463676] [2022-11-20 20:51:28,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759463676] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:51:28,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519997525] [2022-11-20 20:51:28,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:51:28,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:51:28,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1f8974-5854-4b32-a76f-f0ad113118ad/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:51:28,953 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1f8974-5854-4b32-a76f-f0ad113118ad/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:51:28,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1f8974-5854-4b32-a76f-f0ad113118ad/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 20:51:29,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:51:29,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-20 20:51:29,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:51:29,183 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2022-11-20 20:51:29,348 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-11-20 20:51:29,356 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 20:51:29,356 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:51:29,437 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 20:51:29,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1519997525] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:51:29,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [214531237] [2022-11-20 20:51:29,476 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-11-20 20:51:29,477 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 20:51:29,482 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 20:51:29,490 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 20:51:29,491 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 20:51:29,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:51:29,625 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 44 [2022-11-20 20:51:30,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:51:30,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:51:30,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:51:30,907 INFO L321 Elim1Store]: treesize reduction 99, result has 28.8 percent of original size [2022-11-20 20:51:30,908 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 419 treesize of output 439 [2022-11-20 20:51:31,631 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2022-11-20 20:51:35,519 INFO L197 IcfgInterpreter]: Interpreting procedure get_dummy with input of size 88 for LOIs [2022-11-20 20:51:35,552 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 20:51:37,682 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '240#(and (= |~#d2~0.offset| 0) (= |ULTIMATE.start_check_~s1#1.offset| |ULTIMATE.start_check_#in~s1#1.offset|) (= |~#d1~0.base| 4) (= (ite (= (select (select |#memory_int| |ULTIMATE.start_check_~s1#1.base|) (+ (* 4 |ULTIMATE.start_check_~i#1|) |ULTIMATE.start_check_~s1#1.offset| 8)) |ULTIMATE.start_check_~i#1|) 1 0) |ULTIMATE.start_check_#res#1|) (= 5 |~#d2~0.base|) (= |ULTIMATE.start_check_#in~i#1| |ULTIMATE.start_check_~i#1|) (<= (select (select |#memory_int| |ULTIMATE.start_main_~pa~0#1.base|) |ULTIMATE.start_main_~pa~0#1.offset|) |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start_check_#in~s1#1.base| |ULTIMATE.start_check_~s1#1.base|) (= |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_check_#in~i#1|) (= |ULTIMATE.start_check_#in~s1#1.base| |ULTIMATE.start_main_~pd2~0#1.base|) (= |ULTIMATE.start_check_#in~s1#1.offset| |ULTIMATE.start_main_~pd2~0#1.offset|) (= |~#d1~0.offset| 0) (= |#NULL.offset| 0) (= 0 |ULTIMATE.start_check_#res#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-20 20:51:37,682 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 20:51:37,682 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 20:51:37,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2022-11-20 20:51:37,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754994811] [2022-11-20 20:51:37,683 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 20:51:37,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 20:51:37,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:51:37,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 20:51:37,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2022-11-20 20:51:37,688 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 20:51:37,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:51:37,842 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2022-11-20 20:51:37,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 20:51:37,844 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2022-11-20 20:51:37,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:51:37,845 INFO L225 Difference]: With dead ends: 26 [2022-11-20 20:51:37,845 INFO L226 Difference]: Without dead ends: 22 [2022-11-20 20:51:37,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=110, Invalid=490, Unknown=0, NotChecked=0, Total=600 [2022-11-20 20:51:37,847 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 5 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 9 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:51:37,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 45 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 40 Invalid, 0 Unknown, 9 Unchecked, 0.1s Time] [2022-11-20 20:51:37,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-11-20 20:51:37,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-11-20 20:51:37,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 18 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 20:51:37,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2022-11-20 20:51:37,854 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 17 [2022-11-20 20:51:37,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:51:37,854 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2022-11-20 20:51:37,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 10 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 20:51:37,855 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2022-11-20 20:51:37,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-20 20:51:37,856 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:51:37,856 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:51:37,867 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1f8974-5854-4b32-a76f-f0ad113118ad/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-20 20:51:38,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1f8974-5854-4b32-a76f-f0ad113118ad/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:51:38,064 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:51:38,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:51:38,065 INFO L85 PathProgramCache]: Analyzing trace with hash -681618588, now seen corresponding path program 2 times [2022-11-20 20:51:38,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:51:38,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320733085] [2022-11-20 20:51:38,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:51:38,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:51:38,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:51:38,513 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 20:51:38,514 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:51:38,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320733085] [2022-11-20 20:51:38,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320733085] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 20:51:38,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094383998] [2022-11-20 20:51:38,515 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 20:51:38,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:51:38,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1f8974-5854-4b32-a76f-f0ad113118ad/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:51:38,516 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1f8974-5854-4b32-a76f-f0ad113118ad/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 20:51:38,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1f8974-5854-4b32-a76f-f0ad113118ad/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 20:51:38,648 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-20 20:51:38,649 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 20:51:38,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-20 20:51:38,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:51:38,671 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 24 [2022-11-20 20:51:39,046 INFO L321 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2022-11-20 20:51:39,049 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 79 treesize of output 31 [2022-11-20 20:51:39,076 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-20 20:51:39,076 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 20:51:41,573 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-20 20:51:41,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1094383998] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 20:51:41,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1390105230] [2022-11-20 20:51:41,578 INFO L159 IcfgInterpreter]: Started Sifa with 14 locations of interest [2022-11-20 20:51:41,578 INFO L166 IcfgInterpreter]: Building call graph [2022-11-20 20:51:41,578 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-20 20:51:41,579 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-20 20:51:41,579 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-20 20:51:41,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:51:41,640 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 44 [2022-11-20 20:51:42,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:51:42,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:51:42,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 20:51:42,260 INFO L321 Elim1Store]: treesize reduction 99, result has 28.8 percent of original size [2022-11-20 20:51:42,260 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 419 treesize of output 439 [2022-11-20 20:51:42,595 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2022-11-20 20:51:46,530 INFO L197 IcfgInterpreter]: Interpreting procedure get_dummy with input of size 88 for LOIs [2022-11-20 20:51:46,558 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-20 20:51:48,661 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '482#(and (= |~#d2~0.offset| 0) (= |ULTIMATE.start_check_~s1#1.offset| |ULTIMATE.start_check_#in~s1#1.offset|) (= |~#d1~0.base| 4) (= (ite (= (select (select |#memory_int| |ULTIMATE.start_check_~s1#1.base|) (+ (* 4 |ULTIMATE.start_check_~i#1|) |ULTIMATE.start_check_~s1#1.offset| 8)) |ULTIMATE.start_check_~i#1|) 1 0) |ULTIMATE.start_check_#res#1|) (= 5 |~#d2~0.base|) (= |ULTIMATE.start_check_#in~i#1| |ULTIMATE.start_check_~i#1|) (<= (select (select |#memory_int| |ULTIMATE.start_main_~pa~0#1.base|) |ULTIMATE.start_main_~pa~0#1.offset|) |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start_check_#in~s1#1.base| |ULTIMATE.start_check_~s1#1.base|) (= |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_check_#in~i#1|) (= |ULTIMATE.start_check_#in~s1#1.base| |ULTIMATE.start_main_~pd2~0#1.base|) (= |ULTIMATE.start_check_#in~s1#1.offset| |ULTIMATE.start_main_~pd2~0#1.offset|) (= |~#d1~0.offset| 0) (= |#NULL.offset| 0) (= 0 |ULTIMATE.start_check_#res#1|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-20 20:51:48,661 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-20 20:51:48,662 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 20:51:48,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 21 [2022-11-20 20:51:48,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087788669] [2022-11-20 20:51:48,662 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 20:51:48,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-20 20:51:48,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:51:48,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 20:51:48,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=874, Unknown=1, NotChecked=0, Total=992 [2022-11-20 20:51:48,664 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand has 21 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 20:51:49,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:51:49,552 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2022-11-20 20:51:49,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 20:51:49,553 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2022-11-20 20:51:49,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:51:49,553 INFO L225 Difference]: With dead ends: 26 [2022-11-20 20:51:49,553 INFO L226 Difference]: Without dead ends: 0 [2022-11-20 20:51:49,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 410 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=283, Invalid=1522, Unknown=1, NotChecked=0, Total=1806 [2022-11-20 20:51:49,556 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 13 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 18 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 20:51:49,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 51 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 37 Invalid, 0 Unknown, 18 Unchecked, 0.1s Time] [2022-11-20 20:51:49,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-20 20:51:49,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-20 20:51:49,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:51:49,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-20 20:51:49,559 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2022-11-20 20:51:49,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:51:49,559 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 20:51:49,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 21 states have internal predecessors, (36), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 20:51:49,560 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-20 20:51:49,560 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-20 20:51:49,563 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-20 20:51:49,575 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1f8974-5854-4b32-a76f-f0ad113118ad/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 20:51:49,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1f8974-5854-4b32-a76f-f0ad113118ad/bin/utaipan-6cKwYrpEi9/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 20:51:49,772 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-20 20:51:49,833 INFO L902 garLoopResultBuilder]: At program point get_dummyENTRY(lines 23 26) the Hoare annotation is: true [2022-11-20 20:51:49,834 INFO L899 garLoopResultBuilder]: For program point get_dummyEXIT(lines 23 26) no Hoare annotation was computed. [2022-11-20 20:51:49,834 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-20 20:51:49,834 INFO L895 garLoopResultBuilder]: At program point L46(lines 34 54) the Hoare annotation is: false [2022-11-20 20:51:49,834 INFO L899 garLoopResultBuilder]: For program point L42-1(lines 42 44) no Hoare annotation was computed. [2022-11-20 20:51:49,835 INFO L895 garLoopResultBuilder]: At program point L42-3(lines 42 44) the Hoare annotation is: (and (let ((.cse0 (div (+ |ULTIMATE.start_main_~pd2~0#1.offset| (- |ULTIMATE.start_main_~pa~0#1.offset|)) (- 4)))) (= (+ 2 (select (select |#memory_int| |ULTIMATE.start_main_~pd2~0#1.base|) (+ (* .cse0 4) |ULTIMATE.start_main_~pd2~0#1.offset|))) .cse0)) (= (mod (+ (* 3 |ULTIMATE.start_main_~pa~0#1.offset|) |ULTIMATE.start_main_~pd2~0#1.offset|) 4) 0) (= |ULTIMATE.start_main_~pa~0#1.base| |ULTIMATE.start_main_~pd2~0#1.base|) (<= |ULTIMATE.start_main_~i~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~pa~0#1.base|) |ULTIMATE.start_main_~pa~0#1.offset|))) [2022-11-20 20:51:49,835 INFO L899 garLoopResultBuilder]: For program point L38(lines 38 48) no Hoare annotation was computed. [2022-11-20 20:51:49,847 INFO L895 garLoopResultBuilder]: At program point L42-4(lines 42 44) the Hoare annotation is: (exists ((|aux_div_aux_mod_ULTIMATE.start_main_~pa~0#1.offset_94_55| Int) (|aux_div_ULTIMATE.start_main_~pa~0#1.offset_94| Int)) (let ((.cse0 (* |aux_div_aux_mod_ULTIMATE.start_main_~pa~0#1.offset_94_55| 4)) (.cse1 (select (select |#memory_int| |ULTIMATE.start_main_~pd2~0#1.base|) (+ (* |aux_div_ULTIMATE.start_main_~pa~0#1.offset_94| 4) |ULTIMATE.start_main_~pd2~0#1.offset| (* |aux_div_aux_mod_ULTIMATE.start_main_~pa~0#1.offset_94_55| (- 4)))))) (and (<= 0 .cse0) (<= |ULTIMATE.start_main_~i~0#1| .cse1) (< .cse0 4) (<= .cse1 |ULTIMATE.start_main_~i~0#1|) (= |aux_div_ULTIMATE.start_main_~pa~0#1.offset_94| (+ .cse1 2))))) [2022-11-20 20:51:49,847 INFO L902 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: true [2022-11-20 20:51:49,847 INFO L899 garLoopResultBuilder]: For program point L38-2(lines 38 48) no Hoare annotation was computed. [2022-11-20 20:51:49,847 INFO L899 garLoopResultBuilder]: For program point L36-1(line 36) no Hoare annotation was computed. [2022-11-20 20:51:49,847 INFO L902 garLoopResultBuilder]: At program point L36-2(line 36) the Hoare annotation is: true [2022-11-20 20:51:49,848 INFO L899 garLoopResultBuilder]: For program point L36-3(line 36) no Hoare annotation was computed. [2022-11-20 20:51:49,848 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-20 20:51:49,848 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 52) no Hoare annotation was computed. [2022-11-20 20:51:49,848 INFO L902 garLoopResultBuilder]: At program point L53(lines 33 54) the Hoare annotation is: true [2022-11-20 20:51:49,848 INFO L899 garLoopResultBuilder]: For program point L45(lines 45 47) no Hoare annotation was computed. [2022-11-20 20:51:49,854 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2022-11-20 20:51:49,856 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 20:51:49,871 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0#1.offset_94_55,QUANTIFIED] [2022-11-20 20:51:49,872 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0#1.offset_94,QUANTIFIED] [2022-11-20 20:51:49,872 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0#1.offset_94_55,QUANTIFIED] [2022-11-20 20:51:49,872 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0#1.offset_94_55,QUANTIFIED] [2022-11-20 20:51:49,872 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0#1.offset_94,QUANTIFIED] [2022-11-20 20:51:49,873 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0#1.offset_94_55,QUANTIFIED] [2022-11-20 20:51:49,873 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0#1.offset_94,QUANTIFIED] [2022-11-20 20:51:49,873 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0#1.offset_94,QUANTIFIED] [2022-11-20 20:51:49,873 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0#1.offset_94_55,QUANTIFIED] [2022-11-20 20:51:49,874 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0#1.offset_94_55,QUANTIFIED] [2022-11-20 20:51:49,874 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0#1.offset_94,QUANTIFIED] [2022-11-20 20:51:49,875 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0#1.offset_94_55,QUANTIFIED] [2022-11-20 20:51:49,875 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0#1.offset_94_55,QUANTIFIED] [2022-11-20 20:51:49,875 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0#1.offset_94,QUANTIFIED] [2022-11-20 20:51:49,875 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0#1.offset_94_55,QUANTIFIED] [2022-11-20 20:51:49,875 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0#1.offset_94,QUANTIFIED] [2022-11-20 20:51:49,876 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0#1.offset_94,QUANTIFIED] [2022-11-20 20:51:49,876 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0#1.offset_94_55,QUANTIFIED] [2022-11-20 20:51:49,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 08:51:49 BoogieIcfgContainer [2022-11-20 20:51:49,877 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 20:51:49,877 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 20:51:49,877 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 20:51:49,878 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 20:51:49,878 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:51:26" (3/4) ... [2022-11-20 20:51:49,881 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 20:51:49,887 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure get_dummy [2022-11-20 20:51:49,891 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2022-11-20 20:51:49,891 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2022-11-20 20:51:49,891 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-20 20:51:49,891 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 20:51:49,917 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists aux_div_aux_mod_ULTIMATE.start_main_~pa~0#1.offset_94_55 : int, aux_div_ULTIMATE.start_main_~pa~0#1.offset_94 : int :: (((0 <= aux_div_aux_mod_ULTIMATE.start_main_~pa~0#1.offset_94_55 * 4 && i <= unknown-#memory_int-unknown[pd2][aux_div_ULTIMATE.start_main_~pa~0#1.offset_94 * 4 + pd2 + aux_div_aux_mod_ULTIMATE.start_main_~pa~0#1.offset_94_55 * -4]) && aux_div_aux_mod_ULTIMATE.start_main_~pa~0#1.offset_94_55 * 4 < 4) && unknown-#memory_int-unknown[pd2][aux_div_ULTIMATE.start_main_~pa~0#1.offset_94 * 4 + pd2 + aux_div_aux_mod_ULTIMATE.start_main_~pa~0#1.offset_94_55 * -4] <= i) && aux_div_ULTIMATE.start_main_~pa~0#1.offset_94 == unknown-#memory_int-unknown[pd2][aux_div_ULTIMATE.start_main_~pa~0#1.offset_94 * 4 + pd2 + aux_div_aux_mod_ULTIMATE.start_main_~pa~0#1.offset_94_55 * -4] + 2) [2022-11-20 20:51:49,926 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1f8974-5854-4b32-a76f-f0ad113118ad/bin/utaipan-6cKwYrpEi9/witness.graphml [2022-11-20 20:51:49,926 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 20:51:49,927 INFO L158 Benchmark]: Toolchain (without parser) took 23944.34ms. Allocated memory was 159.4MB in the beginning and 478.2MB in the end (delta: 318.8MB). Free memory was 129.9MB in the beginning and 207.4MB in the end (delta: -77.4MB). Peak memory consumption was 244.0MB. Max. memory is 16.1GB. [2022-11-20 20:51:49,927 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 115.3MB. Free memory is still 72.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 20:51:49,928 INFO L158 Benchmark]: CACSL2BoogieTranslator took 221.76ms. Allocated memory is still 159.4MB. Free memory was 129.5MB in the beginning and 119.1MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 20:51:49,928 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.36ms. Allocated memory is still 159.4MB. Free memory was 119.1MB in the beginning and 117.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 20:51:49,928 INFO L158 Benchmark]: Boogie Preprocessor took 35.78ms. Allocated memory is still 159.4MB. Free memory was 117.5MB in the beginning and 116.4MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 20:51:49,929 INFO L158 Benchmark]: RCFGBuilder took 514.59ms. Allocated memory is still 159.4MB. Free memory was 115.9MB in the beginning and 101.7MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-20 20:51:49,929 INFO L158 Benchmark]: TraceAbstraction took 23082.65ms. Allocated memory was 159.4MB in the beginning and 478.2MB in the end (delta: 318.8MB). Free memory was 101.2MB in the beginning and 210.5MB in the end (delta: -109.3MB). Peak memory consumption was 210.4MB. Max. memory is 16.1GB. [2022-11-20 20:51:49,930 INFO L158 Benchmark]: Witness Printer took 49.29ms. Allocated memory is still 478.2MB. Free memory was 210.5MB in the beginning and 207.4MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-20 20:51:49,931 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 115.3MB. Free memory is still 72.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 221.76ms. Allocated memory is still 159.4MB. Free memory was 129.5MB in the beginning and 119.1MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.36ms. Allocated memory is still 159.4MB. Free memory was 119.1MB in the beginning and 117.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.78ms. Allocated memory is still 159.4MB. Free memory was 117.5MB in the beginning and 116.4MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 514.59ms. Allocated memory is still 159.4MB. Free memory was 115.9MB in the beginning and 101.7MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 23082.65ms. Allocated memory was 159.4MB in the beginning and 478.2MB in the end (delta: 318.8MB). Free memory was 101.2MB in the beginning and 210.5MB in the end (delta: -109.3MB). Peak memory consumption was 210.4MB. Max. memory is 16.1GB. * Witness Printer took 49.29ms. Allocated memory is still 478.2MB. Free memory was 210.5MB in the beginning and 207.4MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0#1.offset_94_55,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0#1.offset_94,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0#1.offset_94_55,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0#1.offset_94_55,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0#1.offset_94,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0#1.offset_94_55,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0#1.offset_94,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0#1.offset_94,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0#1.offset_94_55,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0#1.offset_94_55,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0#1.offset_94,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0#1.offset_94_55,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0#1.offset_94_55,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0#1.offset_94,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0#1.offset_94_55,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0#1.offset_94,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0#1.offset_94,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0#1.offset_94_55,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 52]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 23.0s, OverallIterations: 4, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 19 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 19 mSDsluCounter, 135 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 27 IncrementalHoareTripleChecker+Unchecked, 93 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 101 IncrementalHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 42 mSDtfsCounter, 101 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 153 GetRequests, 85 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 581 ImplicationChecksByTransitivity, 7.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=3, InterpolantAutomatonStates: 32, 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 8 PreInvPairs, 15 NumberOfFragments, 104 HoareAnnotationTreeSize, 8 FomulaSimplifications, 22 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 226 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.9s InterpolantComputationTime, 109 NumberOfCodeBlocks, 105 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 141 ConstructedInterpolants, 12 QuantifiedInterpolants, 1081 SizeOfPredicates, 34 NumberOfNonLiveVariables, 311 ConjunctsInSsa, 53 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 41/82 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 42]: Loop Invariant Derived loop invariant: ((2 + unknown-#memory_int-unknown[pd2][(pd2 + -pa) / -4 * 4 + pd2] == (pd2 + -pa) / -4 && (3 * pa + pd2) % 4 == 0) && pa == pd2) && i <= unknown-#memory_int-unknown[pa][pa] - InvariantResult [Line: 42]: Loop Invariant [2022-11-20 20:51:49,941 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0#1.offset_94_55,QUANTIFIED] [2022-11-20 20:51:49,942 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0#1.offset_94,QUANTIFIED] [2022-11-20 20:51:49,942 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0#1.offset_94_55,QUANTIFIED] [2022-11-20 20:51:49,942 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0#1.offset_94_55,QUANTIFIED] [2022-11-20 20:51:49,942 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0#1.offset_94,QUANTIFIED] [2022-11-20 20:51:49,942 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0#1.offset_94_55,QUANTIFIED] [2022-11-20 20:51:49,943 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0#1.offset_94,QUANTIFIED] [2022-11-20 20:51:49,943 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0#1.offset_94,QUANTIFIED] [2022-11-20 20:51:49,943 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0#1.offset_94_55,QUANTIFIED] [2022-11-20 20:51:49,943 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0#1.offset_94_55,QUANTIFIED] [2022-11-20 20:51:49,944 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0#1.offset_94,QUANTIFIED] [2022-11-20 20:51:49,944 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0#1.offset_94_55,QUANTIFIED] [2022-11-20 20:51:49,944 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0#1.offset_94_55,QUANTIFIED] [2022-11-20 20:51:49,944 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0#1.offset_94,QUANTIFIED] [2022-11-20 20:51:49,944 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0#1.offset_94_55,QUANTIFIED] [2022-11-20 20:51:49,944 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0#1.offset_94,QUANTIFIED] [2022-11-20 20:51:49,945 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_ULTIMATE.start_main_~pa~0#1.offset_94,QUANTIFIED] [2022-11-20 20:51:49,945 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_aux_mod_ULTIMATE.start_main_~pa~0#1.offset_94_55,QUANTIFIED] Derived loop invariant: (\exists aux_div_aux_mod_ULTIMATE.start_main_~pa~0#1.offset_94_55 : int, aux_div_ULTIMATE.start_main_~pa~0#1.offset_94 : int :: (((0 <= aux_div_aux_mod_ULTIMATE.start_main_~pa~0#1.offset_94_55 * 4 && i <= unknown-#memory_int-unknown[pd2][aux_div_ULTIMATE.start_main_~pa~0#1.offset_94 * 4 + pd2 + aux_div_aux_mod_ULTIMATE.start_main_~pa~0#1.offset_94_55 * -4]) && aux_div_aux_mod_ULTIMATE.start_main_~pa~0#1.offset_94_55 * 4 < 4) && unknown-#memory_int-unknown[pd2][aux_div_ULTIMATE.start_main_~pa~0#1.offset_94 * 4 + pd2 + aux_div_aux_mod_ULTIMATE.start_main_~pa~0#1.offset_94_55 * -4] <= i) && aux_div_ULTIMATE.start_main_~pa~0#1.offset_94 == unknown-#memory_int-unknown[pd2][aux_div_ULTIMATE.start_main_~pa~0#1.offset_94 * 4 + pd2 + aux_div_aux_mod_ULTIMATE.start_main_~pa~0#1.offset_94_55 * -4] + 2) - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-11-20 20:51:49,966 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6d1f8974-5854-4b32-a76f-f0ad113118ad/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE