./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cdfpl/newton_3_6.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b76ff9d-cfe9-4d81-9a49-111e0488c2e3/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b76ff9d-cfe9-4d81-9a49-111e0488c2e3/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b76ff9d-cfe9-4d81-9a49-111e0488c2e3/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b76ff9d-cfe9-4d81-9a49-111e0488c2e3/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_3_6.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b76ff9d-cfe9-4d81-9a49-111e0488c2e3/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b76ff9d-cfe9-4d81-9a49-111e0488c2e3/bin/uautomizer-DrprNOufMa --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2322eb78e0bcc31f88b84cc6e8634dc4fa1254b3bd27e5fa0d7077c3e2485500 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 22:20:33,164 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 22:20:33,166 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 22:20:33,189 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 22:20:33,190 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 22:20:33,191 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 22:20:33,192 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 22:20:33,193 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 22:20:33,195 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 22:20:33,196 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 22:20:33,196 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 22:20:33,197 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 22:20:33,198 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 22:20:33,199 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 22:20:33,200 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 22:20:33,201 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 22:20:33,201 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 22:20:33,202 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 22:20:33,204 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 22:20:33,206 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 22:20:33,207 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 22:20:33,209 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 22:20:33,210 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 22:20:33,211 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 22:20:33,214 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 22:20:33,215 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 22:20:33,215 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 22:20:33,216 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 22:20:33,217 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 22:20:33,218 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 22:20:33,219 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 22:20:33,219 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 22:20:33,220 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 22:20:33,221 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 22:20:33,222 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 22:20:33,222 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 22:20:33,223 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 22:20:33,223 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 22:20:33,223 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 22:20:33,223 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 22:20:33,224 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 22:20:33,225 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b76ff9d-cfe9-4d81-9a49-111e0488c2e3/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 22:20:33,247 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 22:20:33,247 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 22:20:33,247 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 22:20:33,248 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 22:20:33,248 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 22:20:33,249 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 22:20:33,249 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 22:20:33,249 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 22:20:33,249 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 22:20:33,249 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 22:20:33,250 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 22:20:33,250 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 22:20:33,250 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 22:20:33,250 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 22:20:33,250 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 22:20:33,251 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 22:20:33,251 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 22:20:33,251 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 22:20:33,251 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 22:20:33,251 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 22:20:33,251 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 22:20:33,251 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 22:20:33,251 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 22:20:33,252 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 22:20:33,252 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 22:20:33,252 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 22:20:33,252 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 22:20:33,252 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 22:20:33,252 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 22:20:33,252 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 22:20:33,253 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 22:20:33,253 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 22:20:33,253 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 22:20:33,253 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 22:20:33,253 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_7b76ff9d-cfe9-4d81-9a49-111e0488c2e3/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b76ff9d-cfe9-4d81-9a49-111e0488c2e3/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2322eb78e0bcc31f88b84cc6e8634dc4fa1254b3bd27e5fa0d7077c3e2485500 [2021-12-06 22:20:33,443 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 22:20:33,458 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 22:20:33,460 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 22:20:33,461 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 22:20:33,461 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 22:20:33,462 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b76ff9d-cfe9-4d81-9a49-111e0488c2e3/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/floats-cdfpl/newton_3_6.i [2021-12-06 22:20:33,506 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b76ff9d-cfe9-4d81-9a49-111e0488c2e3/bin/uautomizer-DrprNOufMa/data/79ecf3679/fd633b553a234b6a86725e6f9e3b3b9b/FLAGb67643330 [2021-12-06 22:20:33,862 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 22:20:33,863 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b76ff9d-cfe9-4d81-9a49-111e0488c2e3/sv-benchmarks/c/floats-cdfpl/newton_3_6.i [2021-12-06 22:20:33,868 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b76ff9d-cfe9-4d81-9a49-111e0488c2e3/bin/uautomizer-DrprNOufMa/data/79ecf3679/fd633b553a234b6a86725e6f9e3b3b9b/FLAGb67643330 [2021-12-06 22:20:33,876 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b76ff9d-cfe9-4d81-9a49-111e0488c2e3/bin/uautomizer-DrprNOufMa/data/79ecf3679/fd633b553a234b6a86725e6f9e3b3b9b [2021-12-06 22:20:33,878 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 22:20:33,879 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 22:20:33,881 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 22:20:33,881 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 22:20:33,884 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 22:20:33,884 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:20:33" (1/1) ... [2021-12-06 22:20:33,885 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4eb0ec93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:20:33, skipping insertion in model container [2021-12-06 22:20:33,885 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:20:33" (1/1) ... [2021-12-06 22:20:33,892 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 22:20:33,903 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 22:20:34,029 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b76ff9d-cfe9-4d81-9a49-111e0488c2e3/sv-benchmarks/c/floats-cdfpl/newton_3_6.i[1764,1777] [2021-12-06 22:20:34,031 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 22:20:34,037 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 22:20:34,051 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b76ff9d-cfe9-4d81-9a49-111e0488c2e3/sv-benchmarks/c/floats-cdfpl/newton_3_6.i[1764,1777] [2021-12-06 22:20:34,052 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 22:20:34,061 INFO L208 MainTranslator]: Completed translation [2021-12-06 22:20:34,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:20:34 WrapperNode [2021-12-06 22:20:34,062 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 22:20:34,062 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 22:20:34,063 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 22:20:34,063 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 22:20:34,069 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:20:34" (1/1) ... [2021-12-06 22:20:34,076 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:20:34" (1/1) ... [2021-12-06 22:20:34,093 INFO L137 Inliner]: procedures = 17, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 34 [2021-12-06 22:20:34,094 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 22:20:34,095 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 22:20:34,095 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 22:20:34,095 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 22:20:34,103 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:20:34" (1/1) ... [2021-12-06 22:20:34,103 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:20:34" (1/1) ... [2021-12-06 22:20:34,105 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:20:34" (1/1) ... [2021-12-06 22:20:34,105 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:20:34" (1/1) ... [2021-12-06 22:20:34,109 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:20:34" (1/1) ... [2021-12-06 22:20:34,111 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:20:34" (1/1) ... [2021-12-06 22:20:34,112 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:20:34" (1/1) ... [2021-12-06 22:20:34,114 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 22:20:34,115 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 22:20:34,115 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 22:20:34,115 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 22:20:34,116 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:20:34" (1/1) ... [2021-12-06 22:20:34,124 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 22:20:34,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b76ff9d-cfe9-4d81-9a49-111e0488c2e3/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:20:34,142 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b76ff9d-cfe9-4d81-9a49-111e0488c2e3/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 22:20:34,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b76ff9d-cfe9-4d81-9a49-111e0488c2e3/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 22:20:34,188 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 22:20:34,188 INFO L130 BoogieDeclarations]: Found specification of procedure f [2021-12-06 22:20:34,188 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2021-12-06 22:20:34,188 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2021-12-06 22:20:34,188 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2021-12-06 22:20:34,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 22:20:34,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 22:20:34,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 22:20:34,243 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 22:20:34,244 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 22:20:34,304 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 22:20:34,309 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 22:20:34,309 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-06 22:20:34,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:20:34 BoogieIcfgContainer [2021-12-06 22:20:34,310 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 22:20:34,312 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 22:20:34,312 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 22:20:34,314 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 22:20:34,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 10:20:33" (1/3) ... [2021-12-06 22:20:34,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4666cac6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 10:20:34, skipping insertion in model container [2021-12-06 22:20:34,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:20:34" (2/3) ... [2021-12-06 22:20:34,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4666cac6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 10:20:34, skipping insertion in model container [2021-12-06 22:20:34,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:20:34" (3/3) ... [2021-12-06 22:20:34,316 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_3_6.i [2021-12-06 22:20:34,320 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 22:20:34,320 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 22:20:34,356 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 22:20:34,362 INFO L339 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=PETRI_NET, 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 22:20:34,362 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 22:20:34,375 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-06 22:20:34,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-06 22:20:34,381 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:20:34,382 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:20:34,382 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:20:34,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:20:34,387 INFO L85 PathProgramCache]: Analyzing trace with hash 694828395, now seen corresponding path program 1 times [2021-12-06 22:20:34,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:20:34,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576681549] [2021-12-06 22:20:34,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:20:34,398 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:20:34,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:20:34,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 22:20:34,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:20:34,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 22:20:34,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:20:34,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 22:20:34,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:20:34,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 22:20:34,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:20:34,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 22:20:34,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:20:34,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 22:20:34,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:20:34,568 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 22:20:34,568 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:20:34,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576681549] [2021-12-06 22:20:34,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576681549] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:20:34,570 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:20:34,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 22:20:34,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949678695] [2021-12-06 22:20:34,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:20:34,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 22:20:34,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:20:34,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 22:20:34,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 22:20:34,602 INFO L87 Difference]: Start difference. First operand has 26 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-06 22:20:34,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:20:34,619 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2021-12-06 22:20:34,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 22:20:34,620 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 33 [2021-12-06 22:20:34,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:20:34,625 INFO L225 Difference]: With dead ends: 49 [2021-12-06 22:20:34,626 INFO L226 Difference]: Without dead ends: 22 [2021-12-06 22:20:34,628 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 22:20:34,632 INFO L933 BasicCegarLoop]: 29 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, 29 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 [2021-12-06 22:20:34,633 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:20:34,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-12-06 22:20:34,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-12-06 22:20:34,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 13 states have (on average 1.0) internal successors, (13), 13 states have internal predecessors, (13), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-06 22:20:34,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2021-12-06 22:20:34,666 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 33 [2021-12-06 22:20:34,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:20:34,666 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2021-12-06 22:20:34,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-06 22:20:34,667 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2021-12-06 22:20:34,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-06 22:20:34,669 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:20:34,669 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:20:34,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 22:20:34,670 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:20:34,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:20:34,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1396428269, now seen corresponding path program 1 times [2021-12-06 22:20:34,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:20:34,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038520828] [2021-12-06 22:20:34,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:20:34,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:20:34,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 22:20:34,699 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 22:20:34,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 22:20:34,743 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 22:20:34,743 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-06 22:20:34,745 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-06 22:20:34,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 22:20:34,751 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-06 22:20:34,754 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-06 22:20:34,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 10:20:34 BoogieIcfgContainer [2021-12-06 22:20:34,778 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-06 22:20:34,779 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 22:20:34,779 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 22:20:34,779 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 22:20:34,779 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:20:34" (3/4) ... [2021-12-06 22:20:34,782 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-06 22:20:34,782 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 22:20:34,783 INFO L158 Benchmark]: Toolchain (without parser) took 903.00ms. Allocated memory is still 125.8MB. Free memory was 83.9MB in the beginning and 69.5MB in the end (delta: 14.4MB). Peak memory consumption was 13.8MB. Max. memory is 16.1GB. [2021-12-06 22:20:34,783 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 125.8MB. Free memory is still 100.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 22:20:34,784 INFO L158 Benchmark]: CACSL2BoogieTranslator took 181.15ms. Allocated memory is still 125.8MB. Free memory was 83.7MB in the beginning and 73.1MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-06 22:20:34,784 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.61ms. Allocated memory is still 125.8MB. Free memory was 73.1MB in the beginning and 71.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 22:20:34,785 INFO L158 Benchmark]: Boogie Preprocessor took 19.57ms. Allocated memory is still 125.8MB. Free memory was 71.7MB in the beginning and 70.7MB in the end (delta: 978.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 22:20:34,786 INFO L158 Benchmark]: RCFGBuilder took 195.45ms. Allocated memory is still 125.8MB. Free memory was 70.5MB in the beginning and 98.8MB in the end (delta: -28.4MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. [2021-12-06 22:20:34,786 INFO L158 Benchmark]: TraceAbstraction took 466.55ms. Allocated memory is still 125.8MB. Free memory was 98.3MB in the beginning and 70.0MB in the end (delta: 28.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2021-12-06 22:20:34,787 INFO L158 Benchmark]: Witness Printer took 3.32ms. Allocated memory is still 125.8MB. Free memory was 70.0MB in the beginning and 69.5MB in the end (delta: 510.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 22:20:34,790 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 125.8MB. Free memory is still 100.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 181.15ms. Allocated memory is still 125.8MB. Free memory was 83.7MB in the beginning and 73.1MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.61ms. Allocated memory is still 125.8MB. Free memory was 73.1MB in the beginning and 71.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 19.57ms. Allocated memory is still 125.8MB. Free memory was 71.7MB in the beginning and 70.7MB in the end (delta: 978.2kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 195.45ms. Allocated memory is still 125.8MB. Free memory was 70.5MB in the beginning and 98.8MB in the end (delta: -28.4MB). Peak memory consumption was 7.5MB. Max. memory is 16.1GB. * TraceAbstraction took 466.55ms. Allocated memory is still 125.8MB. Free memory was 98.3MB in the beginning and 70.0MB in the end (delta: 28.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Witness Printer took 3.32ms. Allocated memory is still 125.8MB. Free memory was 70.0MB in the beginning and 69.5MB in the end (delta: 510.6kB). 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: 51]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 40, overapproximation of someBinaryDOUBLEComparisonOperation at line 50, overapproximation of someBinaryArithmeticFLOAToperation at line 46. Possible FailurePath: [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN > -1.2f && IN < 1.2f) [L24] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L40] RET assume_abort_if_not(IN > -1.2f && IN < 1.2f) [L42] CALL, EXPR f(IN) VAL [\old(x)=50] [L29] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [\old(x)=50, x=50] [L42] RET, EXPR f(IN) VAL [f(IN)=51, IN=50] [L42] CALL, EXPR fp(IN) VAL [\old(x)=50] [L34] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=50, x=50] [L42] RET, EXPR fp(IN) VAL [f(IN)=51, fp(IN)=55, IN=50] [L42] float x = IN - f(IN)/fp(IN); [L44] CALL, EXPR f(x) VAL [\old(x)=53] [L29] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [\old(x)=53, x=53] [L44] RET, EXPR f(x) VAL [f(x)=54, IN=50, x=53] [L44] CALL, EXPR fp(x) VAL [\old(x)=53] [L34] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=53, x=53] [L44] RET, EXPR fp(x) VAL [f(x)=54, fp(x)=56, IN=50, x=53] [L44] x = x - f(x)/fp(x) [L46] CALL, EXPR f(x) VAL [\old(x)=52] [L29] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [\old(x)=52, x=52] [L46] RET, EXPR f(x) VAL [f(x)=57, IN=50, x=52] [L46] CALL, EXPR fp(x) VAL [\old(x)=52] [L34] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=52, x=52] [L46] RET, EXPR fp(x) VAL [f(x)=57, fp(x)=49, IN=50, x=52] [L46] x = x - f(x)/fp(x) [L50] COND TRUE !(x < 0.1) VAL [IN=50] [L51] reach_error() VAL [IN=50] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 29 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 29 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 66 NumberOfCodeBlocks, 66 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 32 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 18/18 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 [2021-12-06 22:20:34,821 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b76ff9d-cfe9-4d81-9a49-111e0488c2e3/bin/uautomizer-DrprNOufMa/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/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b76ff9d-cfe9-4d81-9a49-111e0488c2e3/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b76ff9d-cfe9-4d81-9a49-111e0488c2e3/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b76ff9d-cfe9-4d81-9a49-111e0488c2e3/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b76ff9d-cfe9-4d81-9a49-111e0488c2e3/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_3_6.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b76ff9d-cfe9-4d81-9a49-111e0488c2e3/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b76ff9d-cfe9-4d81-9a49-111e0488c2e3/bin/uautomizer-DrprNOufMa --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2322eb78e0bcc31f88b84cc6e8634dc4fa1254b3bd27e5fa0d7077c3e2485500 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 22:20:36,545 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 22:20:36,547 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 22:20:36,575 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 22:20:36,576 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 22:20:36,577 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 22:20:36,579 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 22:20:36,581 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 22:20:36,584 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 22:20:36,585 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 22:20:36,586 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 22:20:36,587 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 22:20:36,588 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 22:20:36,589 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 22:20:36,590 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 22:20:36,591 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 22:20:36,592 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 22:20:36,593 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 22:20:36,596 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 22:20:36,598 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 22:20:36,600 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 22:20:36,602 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 22:20:36,603 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 22:20:36,604 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 22:20:36,608 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 22:20:36,609 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 22:20:36,609 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 22:20:36,610 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 22:20:36,611 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 22:20:36,612 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 22:20:36,612 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 22:20:36,613 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 22:20:36,614 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 22:20:36,615 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 22:20:36,616 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 22:20:36,616 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 22:20:36,617 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 22:20:36,617 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 22:20:36,618 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 22:20:36,619 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 22:20:36,619 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 22:20:36,620 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b76ff9d-cfe9-4d81-9a49-111e0488c2e3/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-06 22:20:36,647 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 22:20:36,647 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 22:20:36,647 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 22:20:36,648 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 22:20:36,648 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 22:20:36,648 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 22:20:36,649 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 22:20:36,649 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 22:20:36,649 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 22:20:36,650 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 22:20:36,650 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 22:20:36,650 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 22:20:36,650 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 22:20:36,650 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 22:20:36,651 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 22:20:36,651 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 22:20:36,651 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-06 22:20:36,651 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-06 22:20:36,651 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-06 22:20:36,652 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 22:20:36,652 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 22:20:36,652 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 22:20:36,652 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 22:20:36,652 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 22:20:36,653 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 22:20:36,653 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 22:20:36,653 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 22:20:36,653 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 22:20:36,653 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 22:20:36,654 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 22:20:36,654 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-06 22:20:36,654 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-06 22:20:36,654 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 22:20:36,654 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 22:20:36,655 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 22:20:36,655 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 22:20:36,655 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-06 22:20:36,655 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_7b76ff9d-cfe9-4d81-9a49-111e0488c2e3/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b76ff9d-cfe9-4d81-9a49-111e0488c2e3/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2322eb78e0bcc31f88b84cc6e8634dc4fa1254b3bd27e5fa0d7077c3e2485500 [2021-12-06 22:20:36,898 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 22:20:36,912 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 22:20:36,914 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 22:20:36,915 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 22:20:36,916 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 22:20:36,916 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b76ff9d-cfe9-4d81-9a49-111e0488c2e3/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/floats-cdfpl/newton_3_6.i [2021-12-06 22:20:36,959 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b76ff9d-cfe9-4d81-9a49-111e0488c2e3/bin/uautomizer-DrprNOufMa/data/2dab7a78a/1f023055d8e045d1a4146c3ba7b30b40/FLAGec0848c2d [2021-12-06 22:20:37,362 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 22:20:37,362 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b76ff9d-cfe9-4d81-9a49-111e0488c2e3/sv-benchmarks/c/floats-cdfpl/newton_3_6.i [2021-12-06 22:20:37,368 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b76ff9d-cfe9-4d81-9a49-111e0488c2e3/bin/uautomizer-DrprNOufMa/data/2dab7a78a/1f023055d8e045d1a4146c3ba7b30b40/FLAGec0848c2d [2021-12-06 22:20:37,377 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b76ff9d-cfe9-4d81-9a49-111e0488c2e3/bin/uautomizer-DrprNOufMa/data/2dab7a78a/1f023055d8e045d1a4146c3ba7b30b40 [2021-12-06 22:20:37,379 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 22:20:37,380 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 22:20:37,381 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 22:20:37,381 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 22:20:37,384 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 22:20:37,385 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:20:37" (1/1) ... [2021-12-06 22:20:37,385 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1421fec6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:20:37, skipping insertion in model container [2021-12-06 22:20:37,386 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:20:37" (1/1) ... [2021-12-06 22:20:37,390 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 22:20:37,402 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 22:20:37,518 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b76ff9d-cfe9-4d81-9a49-111e0488c2e3/sv-benchmarks/c/floats-cdfpl/newton_3_6.i[1764,1777] [2021-12-06 22:20:37,520 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 22:20:37,529 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 22:20:37,547 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b76ff9d-cfe9-4d81-9a49-111e0488c2e3/sv-benchmarks/c/floats-cdfpl/newton_3_6.i[1764,1777] [2021-12-06 22:20:37,547 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 22:20:37,571 INFO L208 MainTranslator]: Completed translation [2021-12-06 22:20:37,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:20:37 WrapperNode [2021-12-06 22:20:37,571 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 22:20:37,572 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 22:20:37,572 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 22:20:37,573 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 22:20:37,579 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:20:37" (1/1) ... [2021-12-06 22:20:37,588 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:20:37" (1/1) ... [2021-12-06 22:20:37,601 INFO L137 Inliner]: procedures = 18, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 35 [2021-12-06 22:20:37,601 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 22:20:37,602 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 22:20:37,602 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 22:20:37,602 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 22:20:37,608 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:20:37" (1/1) ... [2021-12-06 22:20:37,608 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:20:37" (1/1) ... [2021-12-06 22:20:37,611 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:20:37" (1/1) ... [2021-12-06 22:20:37,611 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:20:37" (1/1) ... [2021-12-06 22:20:37,616 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:20:37" (1/1) ... [2021-12-06 22:20:37,618 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:20:37" (1/1) ... [2021-12-06 22:20:37,619 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:20:37" (1/1) ... [2021-12-06 22:20:37,621 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 22:20:37,622 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 22:20:37,622 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 22:20:37,622 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 22:20:37,622 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:20:37" (1/1) ... [2021-12-06 22:20:37,628 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 22:20:37,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b76ff9d-cfe9-4d81-9a49-111e0488c2e3/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:20:37,646 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b76ff9d-cfe9-4d81-9a49-111e0488c2e3/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 22:20:37,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b76ff9d-cfe9-4d81-9a49-111e0488c2e3/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 22:20:37,678 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 22:20:37,679 INFO L130 BoogieDeclarations]: Found specification of procedure f [2021-12-06 22:20:37,679 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2021-12-06 22:20:37,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-06 22:20:37,679 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2021-12-06 22:20:37,679 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2021-12-06 22:20:37,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 22:20:37,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 22:20:37,728 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 22:20:37,729 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 22:20:46,187 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 22:20:46,193 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 22:20:46,193 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-06 22:20:46,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:20:46 BoogieIcfgContainer [2021-12-06 22:20:46,195 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 22:20:46,196 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 22:20:46,197 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 22:20:46,199 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 22:20:46,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 10:20:37" (1/3) ... [2021-12-06 22:20:46,200 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8bf4ba7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 10:20:46, skipping insertion in model container [2021-12-06 22:20:46,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:20:37" (2/3) ... [2021-12-06 22:20:46,200 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8bf4ba7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 10:20:46, skipping insertion in model container [2021-12-06 22:20:46,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:20:46" (3/3) ... [2021-12-06 22:20:46,201 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_3_6.i [2021-12-06 22:20:46,206 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 22:20:46,206 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 22:20:46,240 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 22:20:46,245 INFO L339 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=PETRI_NET, 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 22:20:46,245 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 22:20:46,256 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-06 22:20:46,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-06 22:20:46,260 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:20:46,261 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:20:46,261 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:20:46,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:20:46,265 INFO L85 PathProgramCache]: Analyzing trace with hash 694828395, now seen corresponding path program 1 times [2021-12-06 22:20:46,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:20:46,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [542323212] [2021-12-06 22:20:46,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:20:46,275 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:20:46,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b76ff9d-cfe9-4d81-9a49-111e0488c2e3/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:20:46,276 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b76ff9d-cfe9-4d81-9a49-111e0488c2e3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:20:46,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b76ff9d-cfe9-4d81-9a49-111e0488c2e3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-06 22:20:49,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:20:49,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-06 22:20:49,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:20:49,536 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 22:20:49,536 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:20:49,537 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 22:20:49,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [542323212] [2021-12-06 22:20:49,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [542323212] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:20:49,538 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:20:49,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 22:20:49,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063775792] [2021-12-06 22:20:49,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:20:49,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 22:20:49,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 22:20:49,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 22:20:49,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 22:20:49,569 INFO L87 Difference]: Start difference. First operand has 26 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-06 22:20:49,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:20:49,583 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2021-12-06 22:20:49,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 22:20:49,584 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 33 [2021-12-06 22:20:49,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:20:49,589 INFO L225 Difference]: With dead ends: 49 [2021-12-06 22:20:49,589 INFO L226 Difference]: Without dead ends: 22 [2021-12-06 22:20:49,591 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 22:20:49,594 INFO L933 BasicCegarLoop]: 29 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, 29 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 [2021-12-06 22:20:49,595 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:20:49,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-12-06 22:20:49,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-12-06 22:20:49,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 13 states have (on average 1.0) internal successors, (13), 13 states have internal predecessors, (13), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-06 22:20:49,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2021-12-06 22:20:49,621 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 33 [2021-12-06 22:20:49,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:20:49,621 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2021-12-06 22:20:49,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-06 22:20:49,622 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2021-12-06 22:20:49,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-06 22:20:49,623 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:20:49,623 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:20:49,672 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b76ff9d-cfe9-4d81-9a49-111e0488c2e3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-06 22:20:49,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b76ff9d-cfe9-4d81-9a49-111e0488c2e3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 22:20:49,825 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:20:49,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:20:49,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1396428269, now seen corresponding path program 1 times [2021-12-06 22:20:49,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 22:20:49,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [718986691] [2021-12-06 22:20:49,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:20:49,827 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 22:20:49,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b76ff9d-cfe9-4d81-9a49-111e0488c2e3/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 22:20:49,828 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b76ff9d-cfe9-4d81-9a49-111e0488c2e3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 22:20:49,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b76ff9d-cfe9-4d81-9a49-111e0488c2e3/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process