./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_0930.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_47ce9749-fa9e-4e3a-9038-ab6a599f967e/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ce9749-fa9e-4e3a-9038-ab6a599f967e/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_47ce9749-fa9e-4e3a-9038-ab6a599f967e/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ce9749-fa9e-4e3a-9038-ab6a599f967e/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0930.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ce9749-fa9e-4e3a-9038-ab6a599f967e/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_47ce9749-fa9e-4e3a-9038-ab6a599f967e/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 8d734d3869a39929ea479cab14eb5865c36aeb805da0fe481c4349ce6c2b3759 --- 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 20:39:00,054 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 20:39:00,056 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 20:39:00,092 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 20:39:00,093 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 20:39:00,096 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 20:39:00,100 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 20:39:00,103 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 20:39:00,105 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 20:39:00,111 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 20:39:00,112 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 20:39:00,115 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 20:39:00,115 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 20:39:00,118 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 20:39:00,120 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 20:39:00,122 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 20:39:00,124 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 20:39:00,125 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 20:39:00,127 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 20:39:00,136 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 20:39:00,137 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 20:39:00,140 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 20:39:00,141 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 20:39:00,142 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 20:39:00,153 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 20:39:00,153 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 20:39:00,153 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 20:39:00,156 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 20:39:00,156 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 20:39:00,157 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 20:39:00,158 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 20:39:00,159 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 20:39:00,161 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 20:39:00,163 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 20:39:00,164 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 20:39:00,164 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 20:39:00,165 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 20:39:00,165 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 20:39:00,166 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 20:39:00,167 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 20:39:00,168 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 20:39:00,169 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ce9749-fa9e-4e3a-9038-ab6a599f967e/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-20 20:39:00,221 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 20:39:00,221 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 20:39:00,222 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 20:39:00,222 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 20:39:00,223 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 20:39:00,224 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 20:39:00,224 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 20:39:00,224 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 20:39:00,224 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 20:39:00,225 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 20:39:00,226 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 20:39:00,226 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 20:39:00,227 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 20:39:00,227 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 20:39:00,227 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 20:39:00,227 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 20:39:00,228 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 20:39:00,228 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 20:39:00,229 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 20:39:00,229 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 20:39:00,229 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 20:39:00,229 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 20:39:00,230 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 20:39:00,230 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 20:39:00,230 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 20:39:00,230 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 20:39:00,231 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 20:39:00,231 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 20:39:00,232 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 20:39:00,232 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 20:39:00,232 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 20:39:00,233 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 20:39:00,233 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:39:00,233 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 20:39:00,233 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 20:39:00,234 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 20:39:00,234 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 20:39:00,234 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 20:39:00,234 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 20:39:00,235 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 20:39:00,235 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 20:39:00,235 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_47ce9749-fa9e-4e3a-9038-ab6a599f967e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ce9749-fa9e-4e3a-9038-ab6a599f967e/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d734d3869a39929ea479cab14eb5865c36aeb805da0fe481c4349ce6c2b3759 [2022-11-20 20:39:00,536 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 20:39:00,568 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 20:39:00,571 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 20:39:00,572 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 20:39:00,572 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 20:39:00,573 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ce9749-fa9e-4e3a-9038-ab6a599f967e/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/float-newlib/double_req_bl_0930.c [2022-11-20 20:39:03,564 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 20:39:03,844 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 20:39:03,845 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ce9749-fa9e-4e3a-9038-ab6a599f967e/sv-benchmarks/c/float-newlib/double_req_bl_0930.c [2022-11-20 20:39:03,855 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ce9749-fa9e-4e3a-9038-ab6a599f967e/bin/utaipan-6cKwYrpEi9/data/6cde637ff/384f9761b4a747d480f52d62fee4b6cc/FLAG06f18f744 [2022-11-20 20:39:03,880 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ce9749-fa9e-4e3a-9038-ab6a599f967e/bin/utaipan-6cKwYrpEi9/data/6cde637ff/384f9761b4a747d480f52d62fee4b6cc [2022-11-20 20:39:03,885 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 20:39:03,887 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 20:39:03,891 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 20:39:03,891 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 20:39:03,895 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 20:39:03,896 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:39:03" (1/1) ... [2022-11-20 20:39:03,898 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@277f5abd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:39:03, skipping insertion in model container [2022-11-20 20:39:03,898 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:39:03" (1/1) ... [2022-11-20 20:39:03,904 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 20:39:03,923 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 20:39:04,116 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_47ce9749-fa9e-4e3a-9038-ab6a599f967e/sv-benchmarks/c/float-newlib/double_req_bl_0930.c[3808,3821] [2022-11-20 20:39:04,121 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:39:04,132 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 20:39:04,173 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_47ce9749-fa9e-4e3a-9038-ab6a599f967e/sv-benchmarks/c/float-newlib/double_req_bl_0930.c[3808,3821] [2022-11-20 20:39:04,174 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:39:04,189 INFO L208 MainTranslator]: Completed translation [2022-11-20 20:39:04,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:39:04 WrapperNode [2022-11-20 20:39:04,189 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 20:39:04,190 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 20:39:04,191 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 20:39:04,191 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 20:39:04,199 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:39:04" (1/1) ... [2022-11-20 20:39:04,209 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:39:04" (1/1) ... [2022-11-20 20:39:04,240 INFO L138 Inliner]: procedures = 18, calls = 32, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 162 [2022-11-20 20:39:04,241 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 20:39:04,241 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 20:39:04,241 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 20:39:04,242 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 20:39:04,254 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:39:04" (1/1) ... [2022-11-20 20:39:04,254 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:39:04" (1/1) ... [2022-11-20 20:39:04,257 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:39:04" (1/1) ... [2022-11-20 20:39:04,257 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:39:04" (1/1) ... [2022-11-20 20:39:04,267 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:39:04" (1/1) ... [2022-11-20 20:39:04,285 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:39:04" (1/1) ... [2022-11-20 20:39:04,287 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:39:04" (1/1) ... [2022-11-20 20:39:04,299 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:39:04" (1/1) ... [2022-11-20 20:39:04,302 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 20:39:04,307 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 20:39:04,309 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 20:39:04,309 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 20:39:04,310 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:39:04" (1/1) ... [2022-11-20 20:39:04,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:39:04,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ce9749-fa9e-4e3a-9038-ab6a599f967e/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:39:04,347 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ce9749-fa9e-4e3a-9038-ab6a599f967e/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 20:39:04,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ce9749-fa9e-4e3a-9038-ab6a599f967e/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 20:39:04,397 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 20:39:04,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 20:39:04,397 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 20:39:04,398 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-11-20 20:39:04,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 20:39:04,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-11-20 20:39:04,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 20:39:04,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 20:39:04,399 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 20:39:04,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 20:39:04,528 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 20:39:04,532 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 20:39:04,944 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 20:39:05,015 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 20:39:05,015 INFO L300 CfgBuilder]: Removed 8 assume(true) statements. [2022-11-20 20:39:05,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:39:05 BoogieIcfgContainer [2022-11-20 20:39:05,018 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 20:39:05,020 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 20:39:05,021 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 20:39:05,024 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 20:39:05,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 08:39:03" (1/3) ... [2022-11-20 20:39:05,026 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e7d4138 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:39:05, skipping insertion in model container [2022-11-20 20:39:05,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:39:04" (2/3) ... [2022-11-20 20:39:05,026 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e7d4138 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:39:05, skipping insertion in model container [2022-11-20 20:39:05,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:39:05" (3/3) ... [2022-11-20 20:39:05,028 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_0930.c [2022-11-20 20:39:05,049 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 20:39:05,050 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 20:39:05,100 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 20:39:05,107 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;@b29ee85, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 20:39:05,107 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 20:39:05,112 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 22 states have internal predecessors, (36), 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 20:39:05,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 20:39:05,119 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:39:05,120 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:39:05,120 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:39:05,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:39:05,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1397259804, now seen corresponding path program 1 times [2022-11-20 20:39:05,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:39:05,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138312236] [2022-11-20 20:39:05,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:39:05,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:39:05,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:39:05,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:39:05,401 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 20:39:05,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138312236] [2022-11-20 20:39:05,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138312236] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:39:05,404 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:39:05,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 20:39:05,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222619773] [2022-11-20 20:39:05,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:39:05,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 20:39:05,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 20:39:05,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 20:39:05,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 20:39:05,463 INFO L87 Difference]: Start difference. First operand has 23 states, 21 states have (on average 1.7142857142857142) internal successors, (36), 22 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:39:05,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:39:05,512 INFO L93 Difference]: Finished difference Result 45 states and 71 transitions. [2022-11-20 20:39:05,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 20:39:05,515 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-20 20:39:05,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:39:05,526 INFO L225 Difference]: With dead ends: 45 [2022-11-20 20:39:05,526 INFO L226 Difference]: Without dead ends: 21 [2022-11-20 20:39:05,529 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 20:39:05,536 INFO L413 NwaCegarLoop]: 23 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, 23 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 20:39:05,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 20:39:05,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-11-20 20:39:05,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-11-20 20:39:05,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:39:05,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2022-11-20 20:39:05,580 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 9 [2022-11-20 20:39:05,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:39:05,581 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2022-11-20 20:39:05,581 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), 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 20:39:05,582 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2022-11-20 20:39:05,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-20 20:39:05,583 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:39:05,583 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:39:05,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 20:39:05,585 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:39:05,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:39:05,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1483401345, now seen corresponding path program 1 times [2022-11-20 20:39:05,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 20:39:05,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136308512] [2022-11-20 20:39:05,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:39:05,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 20:39:05,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 20:39:05,687 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 20:39:05,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 20:39:05,767 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-20 20:39:05,768 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 20:39:05,770 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-20 20:39:05,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 20:39:05,777 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-20 20:39:05,781 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 20:39:05,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 08:39:05 BoogieIcfgContainer [2022-11-20 20:39:05,835 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 20:39:05,836 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 20:39:05,836 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 20:39:05,836 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 20:39:05,837 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:39:05" (3/4) ... [2022-11-20 20:39:05,840 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-20 20:39:05,841 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 20:39:05,841 INFO L158 Benchmark]: Toolchain (without parser) took 1954.82ms. Allocated memory was 138.4MB in the beginning and 169.9MB in the end (delta: 31.5MB). Free memory was 74.4MB in the beginning and 118.4MB in the end (delta: -44.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 20:39:05,842 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 138.4MB. Free memory was 106.5MB in the beginning and 106.4MB in the end (delta: 72.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 20:39:05,846 INFO L158 Benchmark]: CACSL2BoogieTranslator took 298.44ms. Allocated memory was 138.4MB in the beginning and 169.9MB in the end (delta: 31.5MB). Free memory was 74.2MB in the beginning and 135.4MB in the end (delta: -61.2MB). Peak memory consumption was 11.9MB. Max. memory is 16.1GB. [2022-11-20 20:39:05,848 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.30ms. Allocated memory is still 169.9MB. Free memory was 135.4MB in the beginning and 133.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 20:39:05,852 INFO L158 Benchmark]: Boogie Preprocessor took 65.47ms. Allocated memory is still 169.9MB. Free memory was 133.4MB in the beginning and 131.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 20:39:05,855 INFO L158 Benchmark]: RCFGBuilder took 710.75ms. Allocated memory is still 169.9MB. Free memory was 131.3MB in the beginning and 109.7MB in the end (delta: 21.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-11-20 20:39:05,856 INFO L158 Benchmark]: TraceAbstraction took 814.71ms. Allocated memory is still 169.9MB. Free memory was 109.1MB in the beginning and 118.4MB in the end (delta: -9.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 20:39:05,856 INFO L158 Benchmark]: Witness Printer took 4.98ms. Allocated memory is still 169.9MB. Free memory is still 118.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 20:39:05,861 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 138.4MB. Free memory was 106.5MB in the beginning and 106.4MB in the end (delta: 72.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 298.44ms. Allocated memory was 138.4MB in the beginning and 169.9MB in the end (delta: 31.5MB). Free memory was 74.2MB in the beginning and 135.4MB in the end (delta: -61.2MB). Peak memory consumption was 11.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.30ms. Allocated memory is still 169.9MB. Free memory was 135.4MB in the beginning and 133.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 65.47ms. Allocated memory is still 169.9MB. Free memory was 133.4MB in the beginning and 131.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 710.75ms. Allocated memory is still 169.9MB. Free memory was 131.3MB in the beginning and 109.7MB in the end (delta: 21.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 814.71ms. Allocated memory is still 169.9MB. Free memory was 109.1MB in the beginning and 118.4MB in the end (delta: -9.4MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.98ms. Allocated memory is still 169.9MB. Free memory is still 118.4MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 152]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 61, overapproximation of someBinaryArithmeticDOUBLEoperation at line 62, overapproximation of bitwiseAnd at line 61, overapproximation of someBinaryDOUBLEComparisonOperation at line 151. Possible FailurePath: [L34-L43] static const double ln2_hi_log = 6.93147180369123816490e-01, ln2_lo_log = 1.90821492927058770002e-10, two54_log = 1.80143985094819840000e+16, Lg1_log = 6.666666666666735130e-01, Lg2_log = 3.999999999940941908e-01, Lg3_log = 2.857142874366239149e-01, Lg4_log = 2.222219843214978396e-01, Lg5_log = 1.818357216161805012e-01, Lg6_log = 1.531383769920937332e-01, Lg7_log = 1.479819860511658591e-01; [L45] static const double zero = 0.0; [L146] double x = 1.0; [L148] CALL, EXPR __ieee754_log(x) [L48] double hfsq, f, s, z, R, w, t1, t2, dk; [L49] __int32_t k, hx, i, j; [L50] __uint32_t lx; VAL [\old(x)=1, Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, two54_log=18014398509481984, x=1, zero=0] [L53] ieee_double_shape_type ew_u; [L54] ew_u.value = (x) [L55] EXPR ew_u.parts.msw [L55] (hx) = ew_u.parts.msw [L56] EXPR ew_u.parts.lsw [L56] (lx) = ew_u.parts.lsw [L59] k = 0 VAL [\old(x)=1, hx=-1, k=0, Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, lx=0, two54_log=18014398509481984, x=1, zero=0] [L60] COND TRUE hx < 0x00100000 VAL [\old(x)=1, hx=-1, k=0, Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, lx=0, two54_log=18014398509481984, x=1, zero=0] [L61] COND TRUE ((hx & 0x7fffffff) | lx) == 0 [L62] return -two54_log / zero; VAL [\old(x)=1, hx=-1, k=0, Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, lx=0, two54_log=18014398509481984, x=1, zero=0] [L148] RET, EXPR __ieee754_log(x) [L148] double res = __ieee754_log(x); [L151] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, res=18014398509481992, res == 0.0 && __signbit_double(res) == 0=0, two54_log=18014398509481984, x=1, zero=0] [L151] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L152] reach_error() VAL [Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, res=18014398509481992, two54_log=18014398509481984, x=1, zero=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 23 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4 IncrementalHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 23 mSDtfsCounter, 4 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 8 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-20 20:39:05,894 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ce9749-fa9e-4e3a-9038-ab6a599f967e/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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ce9749-fa9e-4e3a-9038-ab6a599f967e/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ce9749-fa9e-4e3a-9038-ab6a599f967e/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_47ce9749-fa9e-4e3a-9038-ab6a599f967e/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ce9749-fa9e-4e3a-9038-ab6a599f967e/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0930.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ce9749-fa9e-4e3a-9038-ab6a599f967e/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ce9749-fa9e-4e3a-9038-ab6a599f967e/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 8d734d3869a39929ea479cab14eb5865c36aeb805da0fe481c4349ce6c2b3759 --- 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 20:39:08,447 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 20:39:08,449 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 20:39:08,485 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 20:39:08,486 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 20:39:08,487 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 20:39:08,489 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 20:39:08,491 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 20:39:08,493 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 20:39:08,499 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 20:39:08,500 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 20:39:08,501 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 20:39:08,503 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 20:39:08,506 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 20:39:08,507 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 20:39:08,511 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 20:39:08,513 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 20:39:08,518 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 20:39:08,520 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 20:39:08,522 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 20:39:08,528 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 20:39:08,533 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 20:39:08,536 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 20:39:08,537 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 20:39:08,549 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 20:39:08,550 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 20:39:08,550 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 20:39:08,551 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 20:39:08,552 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 20:39:08,553 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 20:39:08,553 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 20:39:08,554 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 20:39:08,560 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 20:39:08,561 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 20:39:08,562 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 20:39:08,562 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 20:39:08,563 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 20:39:08,563 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 20:39:08,564 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 20:39:08,566 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 20:39:08,567 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 20:39:08,569 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ce9749-fa9e-4e3a-9038-ab6a599f967e/bin/utaipan-6cKwYrpEi9/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-11-20 20:39:08,612 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 20:39:08,612 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 20:39:08,612 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 20:39:08,613 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 20:39:08,613 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 20:39:08,613 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 20:39:08,614 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 20:39:08,614 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 20:39:08,614 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 20:39:08,614 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 20:39:08,614 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 20:39:08,614 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 20:39:08,615 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 20:39:08,615 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 20:39:08,616 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 20:39:08,616 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 20:39:08,616 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 20:39:08,616 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 20:39:08,616 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 20:39:08,616 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 20:39:08,617 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 20:39:08,617 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 20:39:08,617 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 20:39:08,617 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 20:39:08,617 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 20:39:08,617 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 20:39:08,618 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 20:39:08,618 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 20:39:08,618 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 20:39:08,618 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:39:08,618 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 20:39:08,619 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 20:39:08,619 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 20:39:08,619 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-20 20:39:08,619 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 20:39:08,620 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 20:39:08,620 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 20:39:08,620 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 20:39:08,620 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ce9749-fa9e-4e3a-9038-ab6a599f967e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ce9749-fa9e-4e3a-9038-ab6a599f967e/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d734d3869a39929ea479cab14eb5865c36aeb805da0fe481c4349ce6c2b3759 [2022-11-20 20:39:09,036 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 20:39:09,069 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 20:39:09,072 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 20:39:09,074 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 20:39:09,075 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 20:39:09,077 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ce9749-fa9e-4e3a-9038-ab6a599f967e/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/float-newlib/double_req_bl_0930.c [2022-11-20 20:39:12,166 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 20:39:12,412 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 20:39:12,413 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ce9749-fa9e-4e3a-9038-ab6a599f967e/sv-benchmarks/c/float-newlib/double_req_bl_0930.c [2022-11-20 20:39:12,420 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ce9749-fa9e-4e3a-9038-ab6a599f967e/bin/utaipan-6cKwYrpEi9/data/00e4b2860/808c5bc1d7994c6d94d55ec733031bd5/FLAG69b940fea [2022-11-20 20:39:12,440 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ce9749-fa9e-4e3a-9038-ab6a599f967e/bin/utaipan-6cKwYrpEi9/data/00e4b2860/808c5bc1d7994c6d94d55ec733031bd5 [2022-11-20 20:39:12,446 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 20:39:12,448 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 20:39:12,451 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 20:39:12,451 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 20:39:12,455 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 20:39:12,457 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:39:12" (1/1) ... [2022-11-20 20:39:12,458 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59ecf848 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:39:12, skipping insertion in model container [2022-11-20 20:39:12,458 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 08:39:12" (1/1) ... [2022-11-20 20:39:12,466 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 20:39:12,502 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 20:39:12,764 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_47ce9749-fa9e-4e3a-9038-ab6a599f967e/sv-benchmarks/c/float-newlib/double_req_bl_0930.c[3808,3821] [2022-11-20 20:39:12,768 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:39:12,781 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 20:39:12,833 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_47ce9749-fa9e-4e3a-9038-ab6a599f967e/sv-benchmarks/c/float-newlib/double_req_bl_0930.c[3808,3821] [2022-11-20 20:39:12,844 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 20:39:12,866 INFO L208 MainTranslator]: Completed translation [2022-11-20 20:39:12,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:39:12 WrapperNode [2022-11-20 20:39:12,867 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 20:39:12,869 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 20:39:12,870 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 20:39:12,870 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 20:39:12,877 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:39:12" (1/1) ... [2022-11-20 20:39:12,904 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:39:12" (1/1) ... [2022-11-20 20:39:12,946 INFO L138 Inliner]: procedures = 21, calls = 32, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 162 [2022-11-20 20:39:12,946 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 20:39:12,947 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 20:39:12,947 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 20:39:12,947 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 20:39:12,961 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:39:12" (1/1) ... [2022-11-20 20:39:12,961 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:39:12" (1/1) ... [2022-11-20 20:39:12,965 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:39:12" (1/1) ... [2022-11-20 20:39:12,965 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:39:12" (1/1) ... [2022-11-20 20:39:12,980 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:39:12" (1/1) ... [2022-11-20 20:39:12,984 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:39:12" (1/1) ... [2022-11-20 20:39:12,987 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:39:12" (1/1) ... [2022-11-20 20:39:13,002 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:39:12" (1/1) ... [2022-11-20 20:39:13,005 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 20:39:13,006 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 20:39:13,006 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 20:39:13,007 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 20:39:13,007 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:39:12" (1/1) ... [2022-11-20 20:39:13,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 20:39:13,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ce9749-fa9e-4e3a-9038-ab6a599f967e/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 20:39:13,049 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ce9749-fa9e-4e3a-9038-ab6a599f967e/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 20:39:13,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ce9749-fa9e-4e3a-9038-ab6a599f967e/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 20:39:13,109 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 20:39:13,109 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2022-11-20 20:39:13,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2022-11-20 20:39:13,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-20 20:39:13,109 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 20:39:13,110 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-20 20:39:13,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 20:39:13,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 20:39:13,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-20 20:39:13,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 20:39:13,203 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 20:39:13,205 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 20:39:35,930 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 20:39:35,937 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 20:39:35,937 INFO L300 CfgBuilder]: Removed 8 assume(true) statements. [2022-11-20 20:39:35,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:39:35 BoogieIcfgContainer [2022-11-20 20:39:35,940 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 20:39:35,943 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 20:39:35,944 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 20:39:35,948 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 20:39:35,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 08:39:12" (1/3) ... [2022-11-20 20:39:35,950 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@693bdd38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:39:35, skipping insertion in model container [2022-11-20 20:39:35,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 08:39:12" (2/3) ... [2022-11-20 20:39:35,950 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@693bdd38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 08:39:35, skipping insertion in model container [2022-11-20 20:39:35,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 08:39:35" (3/3) ... [2022-11-20 20:39:35,952 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_0930.c [2022-11-20 20:39:35,976 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 20:39:35,976 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 20:39:36,030 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 20:39:36,038 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;@6d27ef2b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 20:39:36,038 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 20:39:36,043 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 31 states have (on average 1.7096774193548387) internal successors, (53), 32 states have internal predecessors, (53), 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 20:39:36,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-20 20:39:36,050 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:39:36,051 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:39:36,052 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:39:36,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:39:36,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1030213693, now seen corresponding path program 1 times [2022-11-20 20:39:36,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 20:39:36,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [873689804] [2022-11-20 20:39:36,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:39:36,074 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 20:39:36,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ce9749-fa9e-4e3a-9038-ab6a599f967e/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 20:39:36,082 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ce9749-fa9e-4e3a-9038-ab6a599f967e/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 20:39:36,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ce9749-fa9e-4e3a-9038-ab6a599f967e/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-20 20:39:37,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:39:37,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-20 20:39:37,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:39:37,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:39:37,190 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:39:37,191 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 20:39:37,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [873689804] [2022-11-20 20:39:37,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [873689804] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:39:37,192 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:39:37,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 20:39:37,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074861284] [2022-11-20 20:39:37,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:39:37,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 20:39:37,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 20:39:37,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 20:39:37,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 20:39:37,253 INFO L87 Difference]: Start difference. First operand has 33 states, 31 states have (on average 1.7096774193548387) internal successors, (53), 32 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 20:39:37,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:39:37,277 INFO L93 Difference]: Finished difference Result 64 states and 104 transitions. [2022-11-20 20:39:37,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 20:39:37,280 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-20 20:39:37,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:39:37,291 INFO L225 Difference]: With dead ends: 64 [2022-11-20 20:39:37,291 INFO L226 Difference]: Without dead ends: 30 [2022-11-20 20:39:37,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 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 20:39:37,303 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 20:39:37,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 20:39:37,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-11-20 20:39:37,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-11-20 20:39:37,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.4137931034482758) internal successors, (41), 29 states have internal predecessors, (41), 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 20:39:37,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 41 transitions. [2022-11-20 20:39:37,371 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 41 transitions. Word has length 10 [2022-11-20 20:39:37,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:39:37,372 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 41 transitions. [2022-11-20 20:39:37,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 20:39:37,375 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 41 transitions. [2022-11-20 20:39:37,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 20:39:37,377 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:39:37,378 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:39:37,411 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ce9749-fa9e-4e3a-9038-ab6a599f967e/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-11-20 20:39:37,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ce9749-fa9e-4e3a-9038-ab6a599f967e/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 20:39:37,592 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:39:37,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:39:37,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1305093504, now seen corresponding path program 1 times [2022-11-20 20:39:37,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 20:39:37,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1513520532] [2022-11-20 20:39:37,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:39:37,593 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 20:39:37,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ce9749-fa9e-4e3a-9038-ab6a599f967e/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 20:39:37,596 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ce9749-fa9e-4e3a-9038-ab6a599f967e/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 20:39:37,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ce9749-fa9e-4e3a-9038-ab6a599f967e/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-20 20:39:38,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:39:38,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 20:39:38,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:39:39,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:39:39,203 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:39:39,203 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 20:39:39,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1513520532] [2022-11-20 20:39:39,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1513520532] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:39:39,204 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:39:39,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 20:39:39,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858596243] [2022-11-20 20:39:39,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:39:39,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 20:39:39,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 20:39:39,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 20:39:39,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 20:39:39,209 INFO L87 Difference]: Start difference. First operand 30 states and 41 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 20:39:39,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:39:39,221 INFO L93 Difference]: Finished difference Result 50 states and 69 transitions. [2022-11-20 20:39:39,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 20:39:39,222 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-20 20:39:39,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:39:39,224 INFO L225 Difference]: With dead ends: 50 [2022-11-20 20:39:39,225 INFO L226 Difference]: Without dead ends: 26 [2022-11-20 20:39:39,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 20:39:39,228 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 11 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 20:39:39,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 84 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 11 Unchecked, 0.0s Time] [2022-11-20 20:39:39,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-11-20 20:39:39,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-11-20 20:39:39,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.36) internal successors, (34), 25 states have internal predecessors, (34), 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 20:39:39,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 34 transitions. [2022-11-20 20:39:39,235 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 34 transitions. Word has length 11 [2022-11-20 20:39:39,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:39:39,236 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 34 transitions. [2022-11-20 20:39:39,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 20:39:39,236 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 34 transitions. [2022-11-20 20:39:39,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 20:39:39,237 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:39:39,237 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:39:39,259 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ce9749-fa9e-4e3a-9038-ab6a599f967e/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-20 20:39:39,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ce9749-fa9e-4e3a-9038-ab6a599f967e/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 20:39:39,444 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:39:39,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:39:39,444 INFO L85 PathProgramCache]: Analyzing trace with hash -594905855, now seen corresponding path program 1 times [2022-11-20 20:39:39,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 20:39:39,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1330520091] [2022-11-20 20:39:39,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:39:39,445 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 20:39:39,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ce9749-fa9e-4e3a-9038-ab6a599f967e/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 20:39:39,446 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ce9749-fa9e-4e3a-9038-ab6a599f967e/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 20:39:39,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ce9749-fa9e-4e3a-9038-ab6a599f967e/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-20 20:39:39,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 20:39:39,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 20:39:39,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 20:39:40,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 20:39:40,172 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 20:39:40,172 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-20 20:39:40,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1330520091] [2022-11-20 20:39:40,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1330520091] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 20:39:40,173 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 20:39:40,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 20:39:40,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390620170] [2022-11-20 20:39:40,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 20:39:40,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 20:39:40,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-20 20:39:40,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 20:39:40,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 20:39:40,176 INFO L87 Difference]: Start difference. First operand 26 states and 34 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 20:39:40,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 20:39:40,182 INFO L93 Difference]: Finished difference Result 35 states and 43 transitions. [2022-11-20 20:39:40,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 20:39:40,183 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-20 20:39:40,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 20:39:40,183 INFO L225 Difference]: With dead ends: 35 [2022-11-20 20:39:40,184 INFO L226 Difference]: Without dead ends: 26 [2022-11-20 20:39:40,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 20:39:40,185 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 0 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 9 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 20:39:40,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 9 Unchecked, 0.0s Time] [2022-11-20 20:39:40,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-11-20 20:39:40,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-11-20 20:39:40,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.32) internal successors, (33), 25 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 20:39:40,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2022-11-20 20:39:40,190 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 11 [2022-11-20 20:39:40,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 20:39:40,191 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions. [2022-11-20 20:39:40,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 20:39:40,191 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2022-11-20 20:39:40,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-20 20:39:40,192 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 20:39:40,192 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 20:39:40,207 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ce9749-fa9e-4e3a-9038-ab6a599f967e/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-20 20:39:40,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ce9749-fa9e-4e3a-9038-ab6a599f967e/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 20:39:40,407 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 20:39:40,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 20:39:40,407 INFO L85 PathProgramCache]: Analyzing trace with hash 464469069, now seen corresponding path program 1 times [2022-11-20 20:39:40,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-20 20:39:40,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1456576105] [2022-11-20 20:39:40,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 20:39:40,409 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 20:39:40,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ce9749-fa9e-4e3a-9038-ab6a599f967e/bin/utaipan-6cKwYrpEi9/mathsat [2022-11-20 20:39:40,410 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ce9749-fa9e-4e3a-9038-ab6a599f967e/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 20:39:40,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ce9749-fa9e-4e3a-9038-ab6a599f967e/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-20 20:39:40,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ce9749-fa9e-4e3a-9038-ab6a599f967e/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 20:39:40,521 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ce9749-fa9e-4e3a-9038-ab6a599f967e/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5) with exit command (exit)) Received EOF on stdin. No stderr output. at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.(TraceCheck.java:236) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:91) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:132) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ce9749-fa9e-4e3a-9038-ab6a599f967e/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5) with exit command (exit)) Received EOF on stdin. No stderr output. at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.AnnotateAndAsserter.buildAnnotatedSsaAndAssertTerms(AnnotateAndAsserter.java:130) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.checkTrace(TraceCheck.java:317) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.(TraceCheck.java:215) ... 30 more Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1465) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:658) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:239) ... 37 more [2022-11-20 20:39:40,525 INFO L158 Benchmark]: Toolchain (without parser) took 28077.05ms. Allocated memory was 73.4MB in the beginning and 102.8MB in the end (delta: 29.4MB). Free memory was 51.4MB in the beginning and 46.7MB in the end (delta: 4.7MB). Peak memory consumption was 35.1MB. Max. memory is 16.1GB. [2022-11-20 20:39:40,525 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 73.4MB. Free memory is still 51.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 20:39:40,526 INFO L158 Benchmark]: CACSL2BoogieTranslator took 416.81ms. Allocated memory is still 73.4MB. Free memory was 51.1MB in the beginning and 38.0MB in the end (delta: 13.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-20 20:39:40,526 INFO L158 Benchmark]: Boogie Procedure Inliner took 77.14ms. Allocated memory is still 73.4MB. Free memory was 37.8MB in the beginning and 35.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 20:39:40,527 INFO L158 Benchmark]: Boogie Preprocessor took 58.41ms. Allocated memory is still 73.4MB. Free memory was 35.8MB in the beginning and 33.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 20:39:40,527 INFO L158 Benchmark]: RCFGBuilder took 22934.37ms. Allocated memory was 73.4MB in the beginning and 102.8MB in the end (delta: 29.4MB). Free memory was 33.7MB in the beginning and 66.9MB in the end (delta: -33.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-20 20:39:40,527 INFO L158 Benchmark]: TraceAbstraction took 4580.68ms. Allocated memory is still 102.8MB. Free memory was 66.1MB in the beginning and 46.7MB in the end (delta: 19.4MB). Peak memory consumption was 20.6MB. Max. memory is 16.1GB. [2022-11-20 20:39:40,530 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### [2022-11-20 20:39:40,523 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ce9749-fa9e-4e3a-9038-ab6a599f967e/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 139 --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 73.4MB. Free memory is still 51.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 416.81ms. Allocated memory is still 73.4MB. Free memory was 51.1MB in the beginning and 38.0MB in the end (delta: 13.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 77.14ms. Allocated memory is still 73.4MB. Free memory was 37.8MB in the beginning and 35.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 58.41ms. Allocated memory is still 73.4MB. Free memory was 35.8MB in the beginning and 33.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 22934.37ms. Allocated memory was 73.4MB in the beginning and 102.8MB in the end (delta: 29.4MB). Free memory was 33.7MB in the beginning and 66.9MB in the end (delta: -33.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * TraceAbstraction took 4580.68ms. Allocated memory is still 102.8MB. Free memory was 66.1MB in the beginning and 46.7MB in the end (delta: 19.4MB). Peak memory consumption was 20.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ce9749-fa9e-4e3a-9038-ab6a599f967e/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5) with exit command (exit)) Received EOF on stdin. No stderr output. de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ce9749-fa9e-4e3a-9038-ab6a599f967e/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5) with exit command (exit)) Received EOF on stdin. No stderr output.: de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.(TraceCheck.java:236) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-11-20 20:39:40,763 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ce9749-fa9e-4e3a-9038-ab6a599f967e/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2022-11-20 20:39:40,801 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ce9749-fa9e-4e3a-9038-ab6a599f967e/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: ERROR: ExceptionOrErrorResult: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47ce9749-fa9e-4e3a-9038-ab6a599f967e/bin/utaipan-6cKwYrpEi9/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5) with exit command (exit)) Received EOF on stdin. No stderr output.