./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cbmc-regression/float3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d32b40be-fb69-4fa1-a428-4082c58a2ef9/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d32b40be-fb69-4fa1-a428-4082c58a2ef9/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d32b40be-fb69-4fa1-a428-4082c58a2ef9/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d32b40be-fb69-4fa1-a428-4082c58a2ef9/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d32b40be-fb69-4fa1-a428-4082c58a2ef9/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d32b40be-fb69-4fa1-a428-4082c58a2ef9/bin/uautomizer-IVEQpCNsaX --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 bfc84f7de0a9f57990dc33f292919523a52aa1e7a1c1eca24395d6b28aed01b7 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 10:42:53,156 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 10:42:53,161 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 10:42:53,216 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 10:42:53,217 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 10:42:53,219 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 10:42:53,221 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 10:42:53,224 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 10:42:53,228 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 10:42:53,229 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 10:42:53,231 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 10:42:53,233 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 10:42:53,234 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 10:42:53,236 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 10:42:53,238 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 10:42:53,241 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 10:42:53,243 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 10:42:53,245 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 10:42:53,250 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 10:42:53,254 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 10:42:53,257 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 10:42:53,270 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 10:42:53,272 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 10:42:53,273 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 10:42:53,278 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 10:42:53,278 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 10:42:53,279 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 10:42:53,280 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 10:42:53,287 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 10:42:53,290 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 10:42:53,291 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 10:42:53,292 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 10:42:53,295 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 10:42:53,296 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 10:42:53,299 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 10:42:53,299 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 10:42:53,300 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 10:42:53,301 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 10:42:53,301 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 10:42:53,303 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 10:42:53,304 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 10:42:53,305 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d32b40be-fb69-4fa1-a428-4082c58a2ef9/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-09 10:42:53,365 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 10:42:53,365 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 10:42:53,366 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 10:42:53,367 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 10:42:53,379 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 10:42:53,379 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 10:42:53,380 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 10:42:53,380 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 10:42:53,381 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 10:42:53,381 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 10:42:53,382 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 10:42:53,383 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 10:42:53,383 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 10:42:53,383 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 10:42:53,384 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 10:42:53,384 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 10:42:53,385 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 10:42:53,385 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 10:42:53,386 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 10:42:53,386 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 10:42:53,386 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 10:42:53,387 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 10:42:53,387 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 10:42:53,387 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 10:42:53,388 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 10:42:53,388 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 10:42:53,388 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 10:42:53,389 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 10:42:53,389 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 10:42:53,389 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 10:42:53,390 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 10:42:53,390 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 10:42:53,390 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_d32b40be-fb69-4fa1-a428-4082c58a2ef9/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d32b40be-fb69-4fa1-a428-4082c58a2ef9/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bfc84f7de0a9f57990dc33f292919523a52aa1e7a1c1eca24395d6b28aed01b7 [2021-11-09 10:42:53,780 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 10:42:53,808 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 10:42:53,811 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 10:42:53,813 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 10:42:53,814 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 10:42:53,815 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d32b40be-fb69-4fa1-a428-4082c58a2ef9/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/floats-cbmc-regression/float3.c [2021-11-09 10:42:53,897 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d32b40be-fb69-4fa1-a428-4082c58a2ef9/bin/uautomizer-IVEQpCNsaX/data/c30f47441/ddda7111f3e34fb28544c5449c0e6082/FLAGcec6a3ad6 [2021-11-09 10:42:54,479 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 10:42:54,480 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d32b40be-fb69-4fa1-a428-4082c58a2ef9/sv-benchmarks/c/floats-cbmc-regression/float3.c [2021-11-09 10:42:54,487 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d32b40be-fb69-4fa1-a428-4082c58a2ef9/bin/uautomizer-IVEQpCNsaX/data/c30f47441/ddda7111f3e34fb28544c5449c0e6082/FLAGcec6a3ad6 [2021-11-09 10:42:54,838 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d32b40be-fb69-4fa1-a428-4082c58a2ef9/bin/uautomizer-IVEQpCNsaX/data/c30f47441/ddda7111f3e34fb28544c5449c0e6082 [2021-11-09 10:42:54,841 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 10:42:54,843 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 10:42:54,846 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 10:42:54,846 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 10:42:54,851 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 10:42:54,852 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:42:54" (1/1) ... [2021-11-09 10:42:54,853 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47c0fba7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:42:54, skipping insertion in model container [2021-11-09 10:42:54,853 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:42:54" (1/1) ... [2021-11-09 10:42:54,862 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 10:42:54,879 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 10:42:55,107 WARN L228 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_d32b40be-fb69-4fa1-a428-4082c58a2ef9/sv-benchmarks/c/floats-cbmc-regression/float3.c[465,478] [2021-11-09 10:42:55,112 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 10:42:55,124 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 10:42:55,142 WARN L228 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_d32b40be-fb69-4fa1-a428-4082c58a2ef9/sv-benchmarks/c/floats-cbmc-regression/float3.c[465,478] [2021-11-09 10:42:55,143 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 10:42:55,161 INFO L208 MainTranslator]: Completed translation [2021-11-09 10:42:55,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:42:55 WrapperNode [2021-11-09 10:42:55,162 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 10:42:55,164 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 10:42:55,164 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 10:42:55,164 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 10:42:55,175 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:42:55" (1/1) ... [2021-11-09 10:42:55,184 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:42:55" (1/1) ... [2021-11-09 10:42:55,208 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 10:42:55,209 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 10:42:55,210 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 10:42:55,210 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 10:42:55,221 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:42:55" (1/1) ... [2021-11-09 10:42:55,221 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:42:55" (1/1) ... [2021-11-09 10:42:55,223 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:42:55" (1/1) ... [2021-11-09 10:42:55,224 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:42:55" (1/1) ... [2021-11-09 10:42:55,229 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:42:55" (1/1) ... [2021-11-09 10:42:55,231 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:42:55" (1/1) ... [2021-11-09 10:42:55,233 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:42:55" (1/1) ... [2021-11-09 10:42:55,235 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 10:42:55,236 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 10:42:55,237 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 10:42:55,237 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 10:42:55,238 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:42:55" (1/1) ... [2021-11-09 10:42:55,253 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 10:42:55,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d32b40be-fb69-4fa1-a428-4082c58a2ef9/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:42:55,291 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d32b40be-fb69-4fa1-a428-4082c58a2ef9/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 10:42:55,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d32b40be-fb69-4fa1-a428-4082c58a2ef9/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 10:42:55,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 10:42:55,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 10:42:55,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-09 10:42:55,350 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 10:42:55,631 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 10:42:55,632 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-11-09 10:42:55,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:42:55 BoogieIcfgContainer [2021-11-09 10:42:55,634 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 10:42:55,637 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 10:42:55,649 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 10:42:55,653 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 10:42:55,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 10:42:54" (1/3) ... [2021-11-09 10:42:55,655 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d743895 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:42:55, skipping insertion in model container [2021-11-09 10:42:55,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:42:55" (2/3) ... [2021-11-09 10:42:55,655 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d743895 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:42:55, skipping insertion in model container [2021-11-09 10:42:55,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:42:55" (3/3) ... [2021-11-09 10:42:55,658 INFO L111 eAbstractionObserver]: Analyzing ICFG float3.c [2021-11-09 10:42:55,665 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 10:42:55,665 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-09 10:42:55,725 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 10:42:55,734 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 [2021-11-09 10:42:55,734 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-09 10:42:55,752 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 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) [2021-11-09 10:42:55,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-09 10:42:55,759 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:42:55,759 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:42:55,760 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 10:42:55,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:42:55,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1804965381, now seen corresponding path program 1 times [2021-11-09 10:42:55,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:42:55,780 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453246772] [2021-11-09 10:42:55,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:42:55,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:42:55,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 10:42:55,913 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 10:42:55,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 10:42:55,962 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 10:42:55,964 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-09 10:42:55,966 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-09 10:42:55,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-09 10:42:55,973 INFO L731 BasicCegarLoop]: Path program histogram: [1] [2021-11-09 10:42:55,977 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-09 10:42:56,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 10:42:56 BoogieIcfgContainer [2021-11-09 10:42:56,003 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-09 10:42:56,004 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-09 10:42:56,004 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-09 10:42:56,005 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-09 10:42:56,005 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:42:55" (3/4) ... [2021-11-09 10:42:56,009 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-09 10:42:56,010 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-09 10:42:56,012 INFO L168 Benchmark]: Toolchain (without parser) took 1167.32 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 52.9 MB in the beginning and 60.0 MB in the end (delta: -7.0 MB). Peak memory consumption was 9.9 MB. Max. memory is 16.1 GB. [2021-11-09 10:42:56,014 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 88.1 MB. Free memory was 69.4 MB in the beginning and 69.4 MB in the end (delta: 43.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 10:42:56,015 INFO L168 Benchmark]: CACSL2BoogieTranslator took 317.01 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 52.7 MB in the beginning and 85.0 MB in the end (delta: -32.3 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. [2021-11-09 10:42:56,016 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.84 ms. Allocated memory is still 107.0 MB. Free memory was 84.8 MB in the beginning and 83.4 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 10:42:56,017 INFO L168 Benchmark]: Boogie Preprocessor took 26.03 ms. Allocated memory is still 107.0 MB. Free memory was 83.4 MB in the beginning and 82.6 MB in the end (delta: 857.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 10:42:56,018 INFO L168 Benchmark]: RCFGBuilder took 398.00 ms. Allocated memory is still 107.0 MB. Free memory was 82.6 MB in the beginning and 74.0 MB in the end (delta: 8.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-09 10:42:56,019 INFO L168 Benchmark]: TraceAbstraction took 366.44 ms. Allocated memory is still 107.0 MB. Free memory was 73.5 MB in the beginning and 60.2 MB in the end (delta: 13.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-11-09 10:42:56,020 INFO L168 Benchmark]: Witness Printer took 5.80 ms. Allocated memory is still 107.0 MB. Free memory was 60.2 MB in the beginning and 60.0 MB in the end (delta: 228.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 10:42:56,025 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 88.1 MB. Free memory was 69.4 MB in the beginning and 69.4 MB in the end (delta: 43.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 317.01 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 52.7 MB in the beginning and 85.0 MB in the end (delta: -32.3 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 44.84 ms. Allocated memory is still 107.0 MB. Free memory was 84.8 MB in the beginning and 83.4 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.03 ms. Allocated memory is still 107.0 MB. Free memory was 83.4 MB in the beginning and 82.6 MB in the end (delta: 857.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 398.00 ms. Allocated memory is still 107.0 MB. Free memory was 82.6 MB in the beginning and 74.0 MB in the end (delta: 8.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 366.44 ms. Allocated memory is still 107.0 MB. Free memory was 73.5 MB in the beginning and 60.2 MB in the end (delta: 13.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Witness Printer took 5.80 ms. Allocated memory is still 107.0 MB. Free memory was 60.2 MB in the beginning and 60.0 MB in the end (delta: 228.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * 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: 26]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 26, overapproximation of someBinaryArithmeticDOUBLEoperation at line 22. Possible FailurePath: [L6] double d = 0.0; VAL [d=0] [L15] int x = 2; [L17] COND TRUE __VERIFIER_nondet_int() [L18] x = 4 VAL [d=0] [L10] d = 1.0 VAL [d=1] [L22] d += (x == 2) [L24] d += (x > 3) [L26] COND TRUE !(d == 2.0) [L26] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 [2021-11-09 10:42:56,080 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d32b40be-fb69-4fa1-a428-4082c58a2ef9/bin/uautomizer-IVEQpCNsaX/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_d32b40be-fb69-4fa1-a428-4082c58a2ef9/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d32b40be-fb69-4fa1-a428-4082c58a2ef9/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d32b40be-fb69-4fa1-a428-4082c58a2ef9/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d32b40be-fb69-4fa1-a428-4082c58a2ef9/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d32b40be-fb69-4fa1-a428-4082c58a2ef9/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d32b40be-fb69-4fa1-a428-4082c58a2ef9/bin/uautomizer-IVEQpCNsaX --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 bfc84f7de0a9f57990dc33f292919523a52aa1e7a1c1eca24395d6b28aed01b7 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 10:42:59,163 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 10:42:59,167 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 10:42:59,237 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 10:42:59,238 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 10:42:59,244 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 10:42:59,246 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 10:42:59,255 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 10:42:59,259 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 10:42:59,266 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 10:42:59,268 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 10:42:59,270 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 10:42:59,271 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 10:42:59,275 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 10:42:59,277 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 10:42:59,283 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 10:42:59,285 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 10:42:59,287 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 10:42:59,290 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 10:42:59,303 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 10:42:59,306 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 10:42:59,308 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 10:42:59,312 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 10:42:59,314 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 10:42:59,326 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 10:42:59,327 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 10:42:59,327 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 10:42:59,330 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 10:42:59,331 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 10:42:59,332 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 10:42:59,333 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 10:42:59,334 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 10:42:59,337 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 10:42:59,338 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 10:42:59,340 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 10:42:59,341 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 10:42:59,342 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 10:42:59,342 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 10:42:59,343 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 10:42:59,345 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 10:42:59,347 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 10:42:59,353 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d32b40be-fb69-4fa1-a428-4082c58a2ef9/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-11-09 10:42:59,411 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 10:42:59,412 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 10:42:59,413 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 10:42:59,413 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 10:42:59,416 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 10:42:59,416 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 10:42:59,417 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 10:42:59,417 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 10:42:59,417 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 10:42:59,418 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 10:42:59,419 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 10:42:59,419 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 10:42:59,420 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 10:42:59,420 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 10:42:59,421 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-09 10:42:59,421 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-09 10:42:59,421 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 10:42:59,422 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 10:42:59,422 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 10:42:59,422 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 10:42:59,422 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 10:42:59,423 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 10:42:59,423 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 10:42:59,423 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 10:42:59,424 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 10:42:59,424 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 10:42:59,425 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 10:42:59,425 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-09 10:42:59,425 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-09 10:42:59,425 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 10:42:59,426 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 10:42:59,426 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 10:42:59,427 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 10:42:59,427 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-09 10:42:59,427 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_d32b40be-fb69-4fa1-a428-4082c58a2ef9/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d32b40be-fb69-4fa1-a428-4082c58a2ef9/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bfc84f7de0a9f57990dc33f292919523a52aa1e7a1c1eca24395d6b28aed01b7 [2021-11-09 10:42:59,888 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 10:42:59,923 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 10:42:59,928 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 10:42:59,932 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 10:42:59,933 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 10:42:59,934 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d32b40be-fb69-4fa1-a428-4082c58a2ef9/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/floats-cbmc-regression/float3.c [2021-11-09 10:43:00,020 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d32b40be-fb69-4fa1-a428-4082c58a2ef9/bin/uautomizer-IVEQpCNsaX/data/0172fcf14/6295a40e79124e7ca4fda9729224f1b3/FLAGc2c6e7e9a [2021-11-09 10:43:00,644 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 10:43:00,645 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d32b40be-fb69-4fa1-a428-4082c58a2ef9/sv-benchmarks/c/floats-cbmc-regression/float3.c [2021-11-09 10:43:00,653 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d32b40be-fb69-4fa1-a428-4082c58a2ef9/bin/uautomizer-IVEQpCNsaX/data/0172fcf14/6295a40e79124e7ca4fda9729224f1b3/FLAGc2c6e7e9a [2021-11-09 10:43:01,023 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d32b40be-fb69-4fa1-a428-4082c58a2ef9/bin/uautomizer-IVEQpCNsaX/data/0172fcf14/6295a40e79124e7ca4fda9729224f1b3 [2021-11-09 10:43:01,027 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 10:43:01,030 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 10:43:01,036 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 10:43:01,036 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 10:43:01,041 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 10:43:01,042 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:43:01" (1/1) ... [2021-11-09 10:43:01,045 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7750284a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:43:01, skipping insertion in model container [2021-11-09 10:43:01,046 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:43:01" (1/1) ... [2021-11-09 10:43:01,056 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 10:43:01,075 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 10:43:01,311 WARN L228 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_d32b40be-fb69-4fa1-a428-4082c58a2ef9/sv-benchmarks/c/floats-cbmc-regression/float3.c[465,478] [2021-11-09 10:43:01,324 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 10:43:01,346 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 10:43:01,421 WARN L228 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_d32b40be-fb69-4fa1-a428-4082c58a2ef9/sv-benchmarks/c/floats-cbmc-regression/float3.c[465,478] [2021-11-09 10:43:01,422 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 10:43:01,441 INFO L208 MainTranslator]: Completed translation [2021-11-09 10:43:01,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:43:01 WrapperNode [2021-11-09 10:43:01,442 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 10:43:01,443 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 10:43:01,444 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 10:43:01,444 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 10:43:01,453 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:43:01" (1/1) ... [2021-11-09 10:43:01,464 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:43:01" (1/1) ... [2021-11-09 10:43:01,485 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 10:43:01,486 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 10:43:01,486 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 10:43:01,486 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 10:43:01,496 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:43:01" (1/1) ... [2021-11-09 10:43:01,497 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:43:01" (1/1) ... [2021-11-09 10:43:01,500 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:43:01" (1/1) ... [2021-11-09 10:43:01,500 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:43:01" (1/1) ... [2021-11-09 10:43:01,508 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:43:01" (1/1) ... [2021-11-09 10:43:01,510 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:43:01" (1/1) ... [2021-11-09 10:43:01,512 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:43:01" (1/1) ... [2021-11-09 10:43:01,515 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 10:43:01,517 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 10:43:01,517 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 10:43:01,517 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 10:43:01,518 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:43:01" (1/1) ... [2021-11-09 10:43:01,527 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 10:43:01,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d32b40be-fb69-4fa1-a428-4082c58a2ef9/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:43:01,556 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d32b40be-fb69-4fa1-a428-4082c58a2ef9/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 10:43:01,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d32b40be-fb69-4fa1-a428-4082c58a2ef9/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 10:43:01,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-09 10:43:01,622 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 10:43:01,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 10:43:01,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 10:43:03,554 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 10:43:03,554 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-11-09 10:43:03,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:43:03 BoogieIcfgContainer [2021-11-09 10:43:03,557 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 10:43:03,559 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 10:43:03,560 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 10:43:03,564 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 10:43:03,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 10:43:01" (1/3) ... [2021-11-09 10:43:03,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73dbc19b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:43:03, skipping insertion in model container [2021-11-09 10:43:03,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:43:01" (2/3) ... [2021-11-09 10:43:03,566 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73dbc19b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:43:03, skipping insertion in model container [2021-11-09 10:43:03,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:43:03" (3/3) ... [2021-11-09 10:43:03,568 INFO L111 eAbstractionObserver]: Analyzing ICFG float3.c [2021-11-09 10:43:03,575 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 10:43:03,576 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-09 10:43:03,632 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 10:43:03,641 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 [2021-11-09 10:43:03,641 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-09 10:43:03,656 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 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) [2021-11-09 10:43:03,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-09 10:43:03,663 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:43:03,663 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:43:03,664 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 10:43:03,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:43:03,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1804965381, now seen corresponding path program 1 times [2021-11-09 10:43:03,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 10:43:03,687 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [849612607] [2021-11-09 10:43:03,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:43:03,689 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 10:43:03,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d32b40be-fb69-4fa1-a428-4082c58a2ef9/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 10:43:03,696 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d32b40be-fb69-4fa1-a428-4082c58a2ef9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 10:43:03,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d32b40be-fb69-4fa1-a428-4082c58a2ef9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-09 10:43:03,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:43:04,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-09 10:43:04,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 10:43:04,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:43:04,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 10:43:20,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:43:20,282 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 10:43:20,283 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [849612607] [2021-11-09 10:43:20,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [849612607] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 10:43:20,284 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:43:20,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-09 10:43:20,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844282890] [2021-11-09 10:43:20,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-09 10:43:20,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 10:43:20,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-09 10:43:20,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-09 10:43:20,314 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 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 9 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 9 states have internal predecessors, (13), 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) [2021-11-09 10:43:33,292 WARN L207 SmtUtils]: Spent 7.60 s on a formula simplification. DAG size of input: 32 DAG size of output: 20 [2021-11-09 10:43:38,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:43:38,251 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2021-11-09 10:43:38,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-09 10:43:38,253 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 9 states have internal predecessors, (13), 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 7 [2021-11-09 10:43:38,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:43:38,259 INFO L225 Difference]: With dead ends: 20 [2021-11-09 10:43:38,260 INFO L226 Difference]: Without dead ends: 0 [2021-11-09 10:43:38,263 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 20.7s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2021-11-09 10:43:38,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-09 10:43:38,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-09 10:43:38,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:43:38,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-09 10:43:38,294 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2021-11-09 10:43:38,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:43:38,295 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-09 10:43:38,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 9 states have internal predecessors, (13), 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) [2021-11-09 10:43:38,295 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-09 10:43:38,295 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-09 10:43:38,298 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-09 10:43:38,313 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d32b40be-fb69-4fa1-a428-4082c58a2ef9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-09 10:43:38,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d32b40be-fb69-4fa1-a428-4082c58a2ef9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 10:43:38,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-09 10:43:38,504 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-09 10:43:38,505 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-09 10:43:38,505 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-09 10:43:38,505 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-09 10:43:38,505 INFO L857 garLoopResultBuilder]: For program point L26(line 26) no Hoare annotation was computed. [2021-11-09 10:43:38,506 INFO L857 garLoopResultBuilder]: For program point L26-1(line 26) no Hoare annotation was computed. [2021-11-09 10:43:38,506 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 26) no Hoare annotation was computed. [2021-11-09 10:43:38,506 INFO L857 garLoopResultBuilder]: For program point L17(lines 17 18) no Hoare annotation was computed. [2021-11-09 10:43:38,506 INFO L857 garLoopResultBuilder]: For program point L17-2(lines 17 18) no Hoare annotation was computed. [2021-11-09 10:43:38,507 INFO L857 garLoopResultBuilder]: For program point L13(lines 13 27) no Hoare annotation was computed. [2021-11-09 10:43:38,507 INFO L857 garLoopResultBuilder]: For program point L8(lines 8 11) no Hoare annotation was computed. [2021-11-09 10:43:38,510 INFO L731 BasicCegarLoop]: Path program histogram: [1] [2021-11-09 10:43:38,512 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-09 10:43:38,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 10:43:38 BoogieIcfgContainer [2021-11-09 10:43:38,515 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-09 10:43:38,516 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-09 10:43:38,517 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-09 10:43:38,517 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-09 10:43:38,518 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:43:03" (3/4) ... [2021-11-09 10:43:38,522 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-09 10:43:38,534 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-11-09 10:43:38,534 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-11-09 10:43:38,534 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-09 10:43:38,535 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-09 10:43:38,575 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d32b40be-fb69-4fa1-a428-4082c58a2ef9/bin/uautomizer-IVEQpCNsaX/witness.graphml [2021-11-09 10:43:38,576 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-09 10:43:38,577 INFO L168 Benchmark]: Toolchain (without parser) took 37546.25 ms. Allocated memory was 62.9 MB in the beginning and 81.8 MB in the end (delta: 18.9 MB). Free memory was 41.9 MB in the beginning and 41.1 MB in the end (delta: 790.8 kB). Peak memory consumption was 19.9 MB. Max. memory is 16.1 GB. [2021-11-09 10:43:38,578 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 62.9 MB. Free memory is still 43.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 10:43:38,579 INFO L168 Benchmark]: CACSL2BoogieTranslator took 406.73 ms. Allocated memory is still 62.9 MB. Free memory was 41.8 MB in the beginning and 45.2 MB in the end (delta: -3.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-09 10:43:38,580 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.66 ms. Allocated memory is still 62.9 MB. Free memory was 45.2 MB in the beginning and 43.7 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 10:43:38,581 INFO L168 Benchmark]: Boogie Preprocessor took 29.96 ms. Allocated memory is still 62.9 MB. Free memory was 43.7 MB in the beginning and 42.7 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 10:43:38,581 INFO L168 Benchmark]: RCFGBuilder took 2040.81 ms. Allocated memory is still 62.9 MB. Free memory was 42.7 MB in the beginning and 33.5 MB in the end (delta: 9.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-09 10:43:38,582 INFO L168 Benchmark]: TraceAbstraction took 34956.16 ms. Allocated memory was 62.9 MB in the beginning and 81.8 MB in the end (delta: 18.9 MB). Free memory was 33.0 MB in the beginning and 43.7 MB in the end (delta: -10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-09 10:43:38,583 INFO L168 Benchmark]: Witness Printer took 59.54 ms. Allocated memory is still 81.8 MB. Free memory was 43.7 MB in the beginning and 41.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-09 10:43:38,587 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 62.9 MB. Free memory is still 43.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 406.73 ms. Allocated memory is still 62.9 MB. Free memory was 41.8 MB in the beginning and 45.2 MB in the end (delta: -3.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.66 ms. Allocated memory is still 62.9 MB. Free memory was 45.2 MB in the beginning and 43.7 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.96 ms. Allocated memory is still 62.9 MB. Free memory was 43.7 MB in the beginning and 42.7 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 2040.81 ms. Allocated memory is still 62.9 MB. Free memory was 42.7 MB in the beginning and 33.5 MB in the end (delta: 9.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 34956.16 ms. Allocated memory was 62.9 MB in the beginning and 81.8 MB in the end (delta: 18.9 MB). Free memory was 33.0 MB in the beginning and 43.7 MB in the end (delta: -10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Witness Printer took 59.54 ms. Allocated memory is still 81.8 MB. Free memory was 43.7 MB in the beginning and 41.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 26]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 34.8s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 17.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 6 SDtfs, 18 SDslu, 16 SDs, 0 SdLazy, 23 SolverSat, 4 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 4.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 20.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, InterpolantAutomatonStates: 9, 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: 0.0s HoareAnnotationTime, 0 LocationsWithAnnotation, 0 PreInvPairs, 0 NumberOfFragments, 0 HoareAnnotationTreeSize, 0 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 0 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 16.2s InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 125 SizeOfPredicates, 3 NumberOfNonLiveVariables, 30 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-11-09 10:43:38,695 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d32b40be-fb69-4fa1-a428-4082c58a2ef9/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE