./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-esbmc-regression/Float_div.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ed54436-58b7-4354-b3b3-db1e16af6494/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ed54436-58b7-4354-b3b3-db1e16af6494/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ed54436-58b7-4354-b3b3-db1e16af6494/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ed54436-58b7-4354-b3b3-db1e16af6494/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-esbmc-regression/Float_div.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ed54436-58b7-4354-b3b3-db1e16af6494/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ed54436-58b7-4354-b3b3-db1e16af6494/bin/uautomizer-ug76WZFUDN --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 fe4b2ac8b2a0e269dd16c91161494638306526c517de7ea644739142e1210da9 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 11:07:06,082 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:07:06,084 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:07:06,115 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:07:06,116 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:07:06,120 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:07:06,123 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:07:06,127 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:07:06,130 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:07:06,137 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:07:06,139 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:07:06,141 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:07:06,142 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:07:06,148 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:07:06,151 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:07:06,153 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:07:06,155 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:07:06,157 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:07:06,159 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:07:06,167 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:07:06,168 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:07:06,171 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:07:06,173 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:07:06,174 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:07:06,187 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:07:06,187 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:07:06,188 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:07:06,190 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:07:06,191 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:07:06,192 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:07:06,193 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:07:06,194 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:07:06,197 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:07:06,198 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:07:06,201 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:07:06,201 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:07:06,202 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:07:06,203 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:07:06,203 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:07:06,205 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:07:06,206 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:07:06,207 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ed54436-58b7-4354-b3b3-db1e16af6494/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 11:07:06,247 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:07:06,251 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:07:06,252 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:07:06,252 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:07:06,253 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:07:06,254 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:07:06,255 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:07:06,255 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:07:06,255 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:07:06,256 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:07:06,257 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:07:06,257 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:07:06,258 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:07:06,258 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:07:06,258 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:07:06,259 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:07:06,259 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:07:06,259 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:07:06,259 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:07:06,260 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:07:06,260 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:07:06,260 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:07:06,261 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:07:06,261 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:07:06,261 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:07:06,262 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:07:06,262 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:07:06,262 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:07:06,263 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:07:06,263 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:07:06,263 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:07:06,264 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:07:06,264 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:07:06,264 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_3ed54436-58b7-4354-b3b3-db1e16af6494/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ed54436-58b7-4354-b3b3-db1e16af6494/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fe4b2ac8b2a0e269dd16c91161494638306526c517de7ea644739142e1210da9 [2022-11-20 11:07:06,648 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:07:06,683 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:07:06,687 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:07:06,688 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:07:06,689 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:07:06,691 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ed54436-58b7-4354-b3b3-db1e16af6494/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/floats-esbmc-regression/Float_div.i [2022-11-20 11:07:10,136 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:07:10,373 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:07:10,374 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ed54436-58b7-4354-b3b3-db1e16af6494/sv-benchmarks/c/floats-esbmc-regression/Float_div.i [2022-11-20 11:07:10,381 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ed54436-58b7-4354-b3b3-db1e16af6494/bin/uautomizer-ug76WZFUDN/data/c29b3d6af/7f09867ed56744b083da05168246622a/FLAGaf3537319 [2022-11-20 11:07:10,398 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ed54436-58b7-4354-b3b3-db1e16af6494/bin/uautomizer-ug76WZFUDN/data/c29b3d6af/7f09867ed56744b083da05168246622a [2022-11-20 11:07:10,402 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:07:10,404 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:07:10,405 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:07:10,406 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:07:10,410 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:07:10,411 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:07:10" (1/1) ... [2022-11-20 11:07:10,413 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62efd1a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:07:10, skipping insertion in model container [2022-11-20 11:07:10,413 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:07:10" (1/1) ... [2022-11-20 11:07:10,422 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:07:10,438 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:07:10,683 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ed54436-58b7-4354-b3b3-db1e16af6494/sv-benchmarks/c/floats-esbmc-regression/Float_div.i[803,816] [2022-11-20 11:07:10,700 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:07:10,721 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:07:10,738 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ed54436-58b7-4354-b3b3-db1e16af6494/sv-benchmarks/c/floats-esbmc-regression/Float_div.i[803,816] [2022-11-20 11:07:10,745 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:07:10,762 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:07:10,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:07:10 WrapperNode [2022-11-20 11:07:10,764 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:07:10,766 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:07:10,766 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:07:10,766 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:07:10,776 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:07:10" (1/1) ... [2022-11-20 11:07:10,787 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:07:10" (1/1) ... [2022-11-20 11:07:10,810 INFO L138 Inliner]: procedures = 14, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 26 [2022-11-20 11:07:10,810 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:07:10,811 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:07:10,812 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:07:10,812 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:07:10,823 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:07:10" (1/1) ... [2022-11-20 11:07:10,824 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:07:10" (1/1) ... [2022-11-20 11:07:10,827 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:07:10" (1/1) ... [2022-11-20 11:07:10,827 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:07:10" (1/1) ... [2022-11-20 11:07:10,834 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:07:10" (1/1) ... [2022-11-20 11:07:10,841 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:07:10" (1/1) ... [2022-11-20 11:07:10,850 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:07:10" (1/1) ... [2022-11-20 11:07:10,851 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:07:10" (1/1) ... [2022-11-20 11:07:10,852 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:07:10,854 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:07:10,854 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:07:10,854 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:07:10,858 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:07:10" (1/1) ... [2022-11-20 11:07:10,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:07:10,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ed54436-58b7-4354-b3b3-db1e16af6494/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:07:10,897 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ed54436-58b7-4354-b3b3-db1e16af6494/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:07:10,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ed54436-58b7-4354-b3b3-db1e16af6494/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:07:10,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:07:10,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:07:10,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:07:10,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:07:11,053 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:07:11,056 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:07:11,209 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:07:11,222 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:07:11,222 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 11:07:11,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:07:11 BoogieIcfgContainer [2022-11-20 11:07:11,230 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:07:11,236 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:07:11,236 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:07:11,240 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:07:11,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:07:10" (1/3) ... [2022-11-20 11:07:11,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71e6a810 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:07:11, skipping insertion in model container [2022-11-20 11:07:11,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:07:10" (2/3) ... [2022-11-20 11:07:11,245 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71e6a810 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:07:11, skipping insertion in model container [2022-11-20 11:07:11,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:07:11" (3/3) ... [2022-11-20 11:07:11,248 INFO L112 eAbstractionObserver]: Analyzing ICFG Float_div.i [2022-11-20 11:07:11,271 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:07:11,272 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 11:07:11,330 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:07:11,338 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1fe5759e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:07:11,339 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 11:07:11,344 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 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) [2022-11-20 11:07:11,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 11:07:11,351 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:07:11,351 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-20 11:07:11,352 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:07:11,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:07:11,358 INFO L85 PathProgramCache]: Analyzing trace with hash 889633835, now seen corresponding path program 1 times [2022-11-20 11:07:11,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:07:11,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144817364] [2022-11-20 11:07:11,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:07:11,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:07:11,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:07:11,480 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 11:07:11,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 11:07:11,513 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 11:07:11,516 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 11:07:11,517 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-20 11:07:11,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:07:11,526 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-20 11:07:11,531 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 11:07:11,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 11:07:11 BoogieIcfgContainer [2022-11-20 11:07:11,552 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 11:07:11,553 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 11:07:11,553 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 11:07:11,553 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 11:07:11,554 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:07:11" (3/4) ... [2022-11-20 11:07:11,558 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-20 11:07:11,558 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 11:07:11,560 INFO L158 Benchmark]: Toolchain (without parser) took 1155.71ms. Allocated memory is still 182.5MB. Free memory was 148.2MB in the beginning and 122.7MB in the end (delta: 25.5MB). Peak memory consumption was 23.4MB. Max. memory is 16.1GB. [2022-11-20 11:07:11,560 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 125.8MB. Free memory is still 94.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:07:11,561 INFO L158 Benchmark]: CACSL2BoogieTranslator took 359.33ms. Allocated memory is still 182.5MB. Free memory was 147.4MB in the beginning and 149.2MB in the end (delta: -1.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-20 11:07:11,562 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.83ms. Allocated memory is still 182.5MB. Free memory was 149.2MB in the beginning and 147.9MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:07:11,562 INFO L158 Benchmark]: Boogie Preprocessor took 41.35ms. Allocated memory is still 182.5MB. Free memory was 147.9MB in the beginning and 146.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 11:07:11,563 INFO L158 Benchmark]: RCFGBuilder took 376.44ms. Allocated memory is still 182.5MB. Free memory was 146.4MB in the beginning and 136.6MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 11:07:11,564 INFO L158 Benchmark]: TraceAbstraction took 316.28ms. Allocated memory is still 182.5MB. Free memory was 136.6MB in the beginning and 123.3MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-20 11:07:11,565 INFO L158 Benchmark]: Witness Printer took 5.53ms. Allocated memory is still 182.5MB. Free memory was 123.3MB in the beginning and 122.7MB in the end (delta: 563.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:07:11,569 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 125.8MB. Free memory is still 94.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 359.33ms. Allocated memory is still 182.5MB. Free memory was 147.4MB in the beginning and 149.2MB in the end (delta: -1.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.83ms. Allocated memory is still 182.5MB. Free memory was 149.2MB in the beginning and 147.9MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 41.35ms. Allocated memory is still 182.5MB. Free memory was 147.9MB in the beginning and 146.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 376.44ms. Allocated memory is still 182.5MB. Free memory was 146.4MB in the beginning and 136.6MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 316.28ms. Allocated memory is still 182.5MB. Free memory was 136.6MB in the beginning and 123.3MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 5.53ms. Allocated memory is still 182.5MB. Free memory was 123.3MB in the beginning and 122.7MB in the end (delta: 563.1kB). 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: 13]: 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 29, overapproximation of someBinaryArithmeticFLOAToperation at line 21. Possible FailurePath: [L20] float x = 1.0f; [L21] float x1 = x/2.5f; VAL [x=1] [L23] COND FALSE !(x1 != x) VAL [x=1] [L29] CALL __VERIFIER_assert(x == 0) [L13] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L13] reach_error() VAL [\old(cond)=0, cond=0] - 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, HoareTripleCheckerStatistics: , 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, 6 NumberOfCodeBlocks, 6 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 [2022-11-20 11:07:11,597 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ed54436-58b7-4354-b3b3-db1e16af6494/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ed54436-58b7-4354-b3b3-db1e16af6494/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ed54436-58b7-4354-b3b3-db1e16af6494/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ed54436-58b7-4354-b3b3-db1e16af6494/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ed54436-58b7-4354-b3b3-db1e16af6494/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-esbmc-regression/Float_div.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ed54436-58b7-4354-b3b3-db1e16af6494/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ed54436-58b7-4354-b3b3-db1e16af6494/bin/uautomizer-ug76WZFUDN --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 fe4b2ac8b2a0e269dd16c91161494638306526c517de7ea644739142e1210da9 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 11:07:14,511 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:07:14,514 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:07:14,566 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:07:14,566 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:07:14,571 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:07:14,574 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:07:14,579 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:07:14,583 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:07:14,589 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:07:14,591 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:07:14,593 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:07:14,595 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:07:14,598 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:07:14,599 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:07:14,602 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:07:14,604 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:07:14,605 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:07:14,607 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:07:14,616 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:07:14,622 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:07:14,624 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:07:14,627 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:07:14,629 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:07:14,636 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:07:14,639 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:07:14,640 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:07:14,642 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:07:14,643 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:07:14,647 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:07:14,648 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:07:14,649 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:07:14,651 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:07:14,657 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:07:14,661 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:07:14,662 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:07:14,663 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:07:14,664 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:07:14,664 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:07:14,665 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:07:14,666 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:07:14,672 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ed54436-58b7-4354-b3b3-db1e16af6494/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-11-20 11:07:14,720 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:07:14,720 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:07:14,722 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:07:14,723 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:07:14,724 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:07:14,724 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:07:14,725 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:07:14,726 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:07:14,726 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:07:14,726 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:07:14,728 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:07:14,728 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:07:14,729 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:07:14,729 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:07:14,730 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:07:14,730 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:07:14,730 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 11:07:14,731 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 11:07:14,731 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 11:07:14,731 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:07:14,732 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:07:14,732 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:07:14,732 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:07:14,733 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:07:14,733 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:07:14,734 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:07:14,734 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:07:14,734 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:07:14,735 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:07:14,735 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:07:14,735 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-20 11:07:14,736 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 11:07:14,736 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:07:14,737 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:07:14,737 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:07:14,738 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 11:07:14,738 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_3ed54436-58b7-4354-b3b3-db1e16af6494/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ed54436-58b7-4354-b3b3-db1e16af6494/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fe4b2ac8b2a0e269dd16c91161494638306526c517de7ea644739142e1210da9 [2022-11-20 11:07:15,178 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:07:15,218 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:07:15,222 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:07:15,224 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:07:15,224 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:07:15,226 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ed54436-58b7-4354-b3b3-db1e16af6494/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/floats-esbmc-regression/Float_div.i [2022-11-20 11:07:18,743 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:07:18,949 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:07:18,950 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ed54436-58b7-4354-b3b3-db1e16af6494/sv-benchmarks/c/floats-esbmc-regression/Float_div.i [2022-11-20 11:07:18,957 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ed54436-58b7-4354-b3b3-db1e16af6494/bin/uautomizer-ug76WZFUDN/data/200b17346/cdd16244224c4bcd9d40331529e75fb4/FLAG8fe734fcd [2022-11-20 11:07:18,976 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ed54436-58b7-4354-b3b3-db1e16af6494/bin/uautomizer-ug76WZFUDN/data/200b17346/cdd16244224c4bcd9d40331529e75fb4 [2022-11-20 11:07:18,979 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:07:18,981 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:07:18,983 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:07:18,983 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:07:18,987 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:07:18,989 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:07:18" (1/1) ... [2022-11-20 11:07:18,990 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ce96da8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:07:18, skipping insertion in model container [2022-11-20 11:07:18,990 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:07:18" (1/1) ... [2022-11-20 11:07:18,999 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:07:19,021 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:07:19,295 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ed54436-58b7-4354-b3b3-db1e16af6494/sv-benchmarks/c/floats-esbmc-regression/Float_div.i[803,816] [2022-11-20 11:07:19,317 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:07:19,341 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:07:19,369 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ed54436-58b7-4354-b3b3-db1e16af6494/sv-benchmarks/c/floats-esbmc-regression/Float_div.i[803,816] [2022-11-20 11:07:19,373 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:07:19,392 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:07:19,392 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:07:19 WrapperNode [2022-11-20 11:07:19,392 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:07:19,394 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:07:19,394 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:07:19,394 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:07:19,404 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:07:19" (1/1) ... [2022-11-20 11:07:19,414 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:07:19" (1/1) ... [2022-11-20 11:07:19,434 INFO L138 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 27 [2022-11-20 11:07:19,435 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:07:19,436 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:07:19,436 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:07:19,436 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:07:19,447 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:07:19" (1/1) ... [2022-11-20 11:07:19,448 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:07:19" (1/1) ... [2022-11-20 11:07:19,450 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:07:19" (1/1) ... [2022-11-20 11:07:19,451 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:07:19" (1/1) ... [2022-11-20 11:07:19,457 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:07:19" (1/1) ... [2022-11-20 11:07:19,461 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:07:19" (1/1) ... [2022-11-20 11:07:19,463 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:07:19" (1/1) ... [2022-11-20 11:07:19,465 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:07:19" (1/1) ... [2022-11-20 11:07:19,467 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:07:19,475 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:07:19,475 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:07:19,475 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:07:19,476 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:07:19" (1/1) ... [2022-11-20 11:07:19,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:07:19,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ed54436-58b7-4354-b3b3-db1e16af6494/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:07:19,523 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ed54436-58b7-4354-b3b3-db1e16af6494/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:07:19,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ed54436-58b7-4354-b3b3-db1e16af6494/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:07:19,587 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:07:19,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-20 11:07:19,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:07:19,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:07:19,695 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:07:19,698 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:07:20,549 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:07:20,557 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:07:20,557 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 11:07:20,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:07:20 BoogieIcfgContainer [2022-11-20 11:07:20,560 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:07:20,566 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:07:20,566 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:07:20,570 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:07:20,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:07:18" (1/3) ... [2022-11-20 11:07:20,572 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f163307 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:07:20, skipping insertion in model container [2022-11-20 11:07:20,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:07:19" (2/3) ... [2022-11-20 11:07:20,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f163307 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:07:20, skipping insertion in model container [2022-11-20 11:07:20,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:07:20" (3/3) ... [2022-11-20 11:07:20,575 INFO L112 eAbstractionObserver]: Analyzing ICFG Float_div.i [2022-11-20 11:07:20,600 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:07:20,600 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 11:07:20,690 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:07:20,706 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@694f5861, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:07:20,706 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 11:07:20,711 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 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) [2022-11-20 11:07:20,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-20 11:07:20,719 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:07:20,720 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-20 11:07:20,721 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:07:20,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:07:20,729 INFO L85 PathProgramCache]: Analyzing trace with hash 889633835, now seen corresponding path program 1 times [2022-11-20 11:07:20,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:07:20,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2091139899] [2022-11-20 11:07:20,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:07:20,745 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:07:20,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ed54436-58b7-4354-b3b3-db1e16af6494/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:07:20,751 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ed54436-58b7-4354-b3b3-db1e16af6494/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:07:20,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ed54436-58b7-4354-b3b3-db1e16af6494/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-20 11:07:20,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:20,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:07:20,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:07:23,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:07:23,018 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:07:23,019 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:07:23,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2091139899] [2022-11-20 11:07:23,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2091139899] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:07:23,020 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:07:23,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:07:23,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719491618] [2022-11-20 11:07:23,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:07:23,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:07:23,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:07:23,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:07:23,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:07:23,069 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 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) Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:07:25,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:07:25,081 INFO L93 Difference]: Finished difference Result 20 states and 24 transitions. [2022-11-20 11:07:25,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:07:25,189 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2022-11-20 11:07:25,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:07:25,198 INFO L225 Difference]: With dead ends: 20 [2022-11-20 11:07:25,198 INFO L226 Difference]: Without dead ends: 8 [2022-11-20 11:07:25,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:07:25,207 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 11 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 11:07:25,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 15 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 11:07:25,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2022-11-20 11:07:25,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2022-11-20 11:07:25,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:07:25,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2022-11-20 11:07:25,253 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2022-11-20 11:07:25,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:07:25,253 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2022-11-20 11:07:25,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:07:25,254 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2022-11-20 11:07:25,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-20 11:07:25,256 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:07:25,256 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:07:25,277 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ed54436-58b7-4354-b3b3-db1e16af6494/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-20 11:07:25,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ed54436-58b7-4354-b3b3-db1e16af6494/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:07:25,470 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:07:25,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:07:25,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1810510480, now seen corresponding path program 1 times [2022-11-20 11:07:25,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:07:25,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [175507946] [2022-11-20 11:07:25,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:07:25,472 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:07:25,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ed54436-58b7-4354-b3b3-db1e16af6494/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:07:25,474 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ed54436-58b7-4354-b3b3-db1e16af6494/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:07:25,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ed54436-58b7-4354-b3b3-db1e16af6494/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-20 11:07:25,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:07:25,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 11:07:25,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:07:28,569 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:07:28,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:07:33,599 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:07:33,599 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:07:33,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [175507946] [2022-11-20 11:07:33,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [175507946] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:07:33,600 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:07:33,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2022-11-20 11:07:33,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837663393] [2022-11-20 11:07:33,601 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:07:33,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:07:33,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:07:33,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:07:33,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:07:33,604 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:07:37,557 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 11:07:39,581 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 11:07:40,967 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 11:07:41,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:07:41,348 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2022-11-20 11:07:41,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:07:41,349 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-20 11:07:41,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:07:41,350 INFO L225 Difference]: With dead ends: 14 [2022-11-20 11:07:41,350 INFO L226 Difference]: Without dead ends: 10 [2022-11-20 11:07:41,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:07:41,352 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 2 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-11-20 11:07:41,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 13 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 2 Unknown, 0 Unchecked, 6.8s Time] [2022-11-20 11:07:41,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2022-11-20 11:07:41,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2022-11-20 11:07:41,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:07:41,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2022-11-20 11:07:41,361 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 7 [2022-11-20 11:07:41,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:07:41,361 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2022-11-20 11:07:41,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:07:41,362 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2022-11-20 11:07:41,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-20 11:07:41,364 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:07:41,364 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2022-11-20 11:07:41,382 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ed54436-58b7-4354-b3b3-db1e16af6494/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-20 11:07:41,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ed54436-58b7-4354-b3b3-db1e16af6494/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:07:41,578 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:07:41,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:07:41,579 INFO L85 PathProgramCache]: Analyzing trace with hash 492108272, now seen corresponding path program 2 times [2022-11-20 11:07:41,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:07:41,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2098076576] [2022-11-20 11:07:41,580 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:07:41,580 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:07:41,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ed54436-58b7-4354-b3b3-db1e16af6494/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:07:41,582 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ed54436-58b7-4354-b3b3-db1e16af6494/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:07:41,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ed54436-58b7-4354-b3b3-db1e16af6494/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-20 11:07:41,843 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:07:41,843 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:07:41,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-20 11:07:41,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:08:08,617 WARN L233 SmtUtils]: Spent 5.05s on a formula simplification that was a NOOP. DAG size: 16 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 11:08:12,718 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:08:12,719 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:08:19,922 WARN L859 $PredicateComparison]: unable to prove that (or (not (fp.eq (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0))) |c_ULTIMATE.start_main_~x1~0#1|)) (fp.eq |c_ULTIMATE.start_main_~x1~0#1| ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))) is different from true [2022-11-20 11:08:28,039 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))))) is different from false [2022-11-20 11:08:30,102 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))))) is different from true [2022-11-20 11:08:41,018 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse1) .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))))) is different from false [2022-11-20 11:08:43,122 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse1) .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))))) is different from true [2022-11-20 11:08:51,921 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2022-11-20 11:08:51,921 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:08:51,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2098076576] [2022-11-20 11:08:51,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2098076576] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:08:51,922 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:08:51,922 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 13 [2022-11-20 11:08:51,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094175838] [2022-11-20 11:08:51,922 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:08:51,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 11:08:51,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:08:51,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 11:08:51,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=66, Unknown=7, NotChecked=54, Total=156 [2022-11-20 11:08:51,924 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand has 13 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:08:53,949 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 11:08:56,086 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 11:08:58,665 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (and (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse1) .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 .cse2))) (or (not (fp.eq |c_ULTIMATE.start_main_~x1~0#1| |c_ULTIMATE.start_main_~x~0#1|)) (fp.eq |c_ULTIMATE.start_main_~x~0#1| .cse2)) (= |c_ULTIMATE.start_main_~x1~0#1| (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse1)) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2022-11-20 11:09:01,551 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (and (= (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse0) .cse0) |c_ULTIMATE.start_main_~x1~0#1|) (let ((.cse1 (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse0))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse1 .cse0) .cse1)) (fp.eq .cse1 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2022-11-20 11:09:03,665 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (and (or (not (fp.eq (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse0) |c_ULTIMATE.start_main_~x1~0#1|)) (fp.eq |c_ULTIMATE.start_main_~x1~0#1| ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))) (= (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0) |c_ULTIMATE.start_main_~x1~0#1|) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2022-11-20 11:09:07,448 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 11:09:10,029 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 11:09:10,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:09:10,081 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2022-11-20 11:09:10,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 11:09:10,082 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-20 11:09:10,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:09:10,083 INFO L225 Difference]: With dead ends: 18 [2022-11-20 11:09:10,083 INFO L226 Difference]: Without dead ends: 12 [2022-11-20 11:09:10,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 41.4s TimeCoverageRelationStatistics Valid=54, Invalid=116, Unknown=10, NotChecked=162, Total=342 [2022-11-20 11:09:10,085 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 13 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 35 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2022-11-20 11:09:10,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 15 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 2 Unknown, 35 Unchecked, 9.6s Time] [2022-11-20 11:09:10,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-11-20 11:09:10,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-11-20 11:09:10,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 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) [2022-11-20 11:09:10,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-11-20 11:09:10,091 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 9 [2022-11-20 11:09:10,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:09:10,091 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-11-20 11:09:10,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:10,092 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-11-20 11:09:10,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 11:09:10,093 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:09:10,093 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1] [2022-11-20 11:09:10,109 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ed54436-58b7-4354-b3b3-db1e16af6494/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-20 11:09:10,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ed54436-58b7-4354-b3b3-db1e16af6494/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:09:10,294 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:09:10,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:09:10,295 INFO L85 PathProgramCache]: Analyzing trace with hash 522938704, now seen corresponding path program 3 times [2022-11-20 11:09:10,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:09:10,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [538516610] [2022-11-20 11:09:10,296 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 11:09:10,296 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:09:10,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ed54436-58b7-4354-b3b3-db1e16af6494/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:09:10,297 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ed54436-58b7-4354-b3b3-db1e16af6494/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:09:10,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ed54436-58b7-4354-b3b3-db1e16af6494/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-20 11:09:10,606 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-20 11:09:10,607 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:09:10,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 11:09:10,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:09:41,572 WARN L233 SmtUtils]: Spent 13.87s on a formula simplification that was a NOOP. DAG size: 17 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 11:09:54,437 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (and (exists ((|v_ULTIMATE.start_main_~x~0#1_13| (_ FloatingPoint 8 24))) (and (= (fp.div c_currentRoundingMode |v_ULTIMATE.start_main_~x~0#1_13| .cse0) |c_ULTIMATE.start_main_~x~0#1|) (not (fp.eq |c_ULTIMATE.start_main_~x~0#1| |v_ULTIMATE.start_main_~x~0#1_13|)))) (fp.eq (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| .cse0) |c_ULTIMATE.start_main_~x~0#1|) (= c_currentRoundingMode roundNearestTiesToEven))) is different from false [2022-11-20 11:09:56,495 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (and (exists ((|v_ULTIMATE.start_main_~x~0#1_13| (_ FloatingPoint 8 24))) (and (= (fp.div c_currentRoundingMode |v_ULTIMATE.start_main_~x~0#1_13| .cse0) |c_ULTIMATE.start_main_~x~0#1|) (not (fp.eq |c_ULTIMATE.start_main_~x~0#1| |v_ULTIMATE.start_main_~x~0#1_13|)))) (fp.eq (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| .cse0) |c_ULTIMATE.start_main_~x~0#1|) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2022-11-20 11:10:21,187 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32))) (.cse2 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (or (and (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv0 32)) (exists ((|v_ULTIMATE.start_main_~x~0#1_13| (_ FloatingPoint 8 24))) (let ((.cse0 (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~x~0#1_13| .cse2))) (and (not (fp.eq .cse0 .cse1)) (not (fp.eq .cse0 |v_ULTIMATE.start_main_~x~0#1_13|)) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse2) .cse0))))) (and (exists ((|v_ULTIMATE.start_main_~x~0#1_13| (_ FloatingPoint 8 24))) (let ((.cse3 (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~x~0#1_13| .cse2))) (and (fp.eq .cse3 .cse1) (not (fp.eq .cse3 |v_ULTIMATE.start_main_~x~0#1_13|))))) (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32))))) is different from false [2022-11-20 11:10:37,738 WARN L837 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~x~0#1_13| (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~x~0#1_13| .cse1))) (and (not (fp.eq .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32)))) (not (fp.eq .cse0 |v_ULTIMATE.start_main_~x~0#1_13|)) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0))))) is different from false [2022-11-20 11:10:39,771 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~x~0#1_13| (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~x~0#1_13| .cse1))) (and (not (fp.eq .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32)))) (not (fp.eq .cse0 |v_ULTIMATE.start_main_~x~0#1_13|)) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0))))) is different from true [2022-11-20 11:10:39,771 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 11:10:39,772 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:10:39,772 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:10:39,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [538516610] [2022-11-20 11:10:39,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [538516610] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:10:39,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:10:39,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:10:39,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425688769] [2022-11-20 11:10:39,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:10:39,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:10:39,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:10:39,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:10:39,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=10, Unknown=6, NotChecked=24, Total=56 [2022-11-20 11:10:39,775 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:41,615 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 11:10:41,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:10:41,620 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2022-11-20 11:10:41,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:10:41,671 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-20 11:10:41,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:10:41,671 INFO L225 Difference]: With dead ends: 12 [2022-11-20 11:10:41,671 INFO L226 Difference]: Without dead ends: 0 [2022-11-20 11:10:41,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 32.8s TimeCoverageRelationStatistics Valid=16, Invalid=10, Unknown=6, NotChecked=24, Total=56 [2022-11-20 11:10:41,673 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 13 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-20 11:10:41,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 13 Unchecked, 1.8s Time] [2022-11-20 11:10:41,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-20 11:10:41,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-20 11:10:41,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:41,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-20 11:10:41,675 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2022-11-20 11:10:41,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:10:41,676 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 11:10:41,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:41,676 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-20 11:10:41,676 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-20 11:10:41,681 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-20 11:10:41,695 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ed54436-58b7-4354-b3b3-db1e16af6494/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-20 11:10:41,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ed54436-58b7-4354-b3b3-db1e16af6494/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:10:41,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-20 11:11:36,352 WARN L233 SmtUtils]: Spent 54.43s on a formula simplification. DAG size of input: 60 DAG size of output: 18 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-20 11:11:36,368 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-20 11:11:36,369 INFO L895 garLoopResultBuilder]: At program point L23-2(lines 23 27) the Hoare annotation is: (and (exists ((|v_ULTIMATE.start_main_~x~0#1_13| (_ FloatingPoint 8 24))) (and (not (fp.eq |ULTIMATE.start_main_~x~0#1| |v_ULTIMATE.start_main_~x~0#1_13|)) (= (fp.div currentRoundingMode |v_ULTIMATE.start_main_~x~0#1_13| ((_ to_fp 8 24) currentRoundingMode (/ 5.0 2.0))) |ULTIMATE.start_main_~x~0#1|))) (= |ULTIMATE.start_main_~x1~0#1| (fp.div roundNearestTiesToEven |ULTIMATE.start_main_~x~0#1| ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (= currentRoundingMode roundNearestTiesToEven)) [2022-11-20 11:11:36,369 INFO L899 garLoopResultBuilder]: For program point L23-3(lines 23 27) no Hoare annotation was computed. [2022-11-20 11:11:36,370 INFO L899 garLoopResultBuilder]: For program point L13(line 13) no Hoare annotation was computed. [2022-11-20 11:11:36,370 INFO L899 garLoopResultBuilder]: For program point L13-1(line 13) no Hoare annotation was computed. [2022-11-20 11:11:36,370 INFO L895 garLoopResultBuilder]: At program point L13-3(line 13) the Hoare annotation is: (= currentRoundingMode roundNearestTiesToEven) [2022-11-20 11:11:36,370 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-20 11:11:36,371 INFO L895 garLoopResultBuilder]: At program point L30(lines 18 31) the Hoare annotation is: (= currentRoundingMode roundNearestTiesToEven) [2022-11-20 11:11:36,371 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-20 11:11:36,371 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-20 11:11:36,371 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2022-11-20 11:11:36,375 INFO L444 BasicCegarLoop]: Path program histogram: [3, 1] [2022-11-20 11:11:36,378 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 11:11:36,388 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-11-20 11:11:36,392 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-11-20 11:11:36,395 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0#1_13,QUANTIFIED] [2022-11-20 11:11:36,395 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0#1_13,QUANTIFIED] [2022-11-20 11:11:36,395 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-11-20 11:11:36,396 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-11-20 11:11:36,396 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-11-20 11:11:36,397 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0#1_13,QUANTIFIED] [2022-11-20 11:11:36,397 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0#1_13,QUANTIFIED] [2022-11-20 11:11:36,398 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-11-20 11:11:36,398 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-11-20 11:11:36,398 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-11-20 11:11:36,399 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-11-20 11:11:36,399 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-11-20 11:11:36,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 11:11:36 BoogieIcfgContainer [2022-11-20 11:11:36,400 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 11:11:36,401 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 11:11:36,401 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 11:11:36,401 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 11:11:36,402 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:07:20" (3/4) ... [2022-11-20 11:11:36,405 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 11:11:36,416 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2022-11-20 11:11:36,416 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-20 11:11:36,416 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-20 11:11:36,417 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 11:11:36,443 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((\exists v_ULTIMATE.start_main_~x~0#1_13 : C_FLOAT :: !~fp.eq~FLOAT(x, v_ULTIMATE.start_main_~x~0#1_13) && ~fp.div~FLOAT(unknown-currentRoundingMode-unknown, v_ULTIMATE.start_main_~x~0#1_13, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 5/2)) == x) && x1 == ~fp.div~FLOAT(~roundNearestTiesToEven, x, ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 5/2))) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven [2022-11-20 11:11:36,449 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ed54436-58b7-4354-b3b3-db1e16af6494/bin/uautomizer-ug76WZFUDN/witness.graphml [2022-11-20 11:11:36,449 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 11:11:36,450 INFO L158 Benchmark]: Toolchain (without parser) took 257469.12ms. Allocated memory was 65.0MB in the beginning and 83.9MB in the end (delta: 18.9MB). Free memory was 36.5MB in the beginning and 50.2MB in the end (delta: -13.7MB). Peak memory consumption was 5.8MB. Max. memory is 16.1GB. [2022-11-20 11:11:36,450 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 65.0MB. Free memory is still 43.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:11:36,451 INFO L158 Benchmark]: CACSL2BoogieTranslator took 410.46ms. Allocated memory was 65.0MB in the beginning and 83.9MB in the end (delta: 18.9MB). Free memory was 36.3MB in the beginning and 62.4MB in the end (delta: -26.1MB). Peak memory consumption was 9.5MB. Max. memory is 16.1GB. [2022-11-20 11:11:36,451 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.33ms. Allocated memory is still 83.9MB. Free memory was 62.4MB in the beginning and 61.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 11:11:36,452 INFO L158 Benchmark]: Boogie Preprocessor took 37.92ms. Allocated memory is still 83.9MB. Free memory was 60.8MB in the beginning and 59.8MB in the end (delta: 968.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:11:36,452 INFO L158 Benchmark]: RCFGBuilder took 1085.49ms. Allocated memory is still 83.9MB. Free memory was 59.6MB in the beginning and 50.6MB in the end (delta: 9.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 11:11:36,453 INFO L158 Benchmark]: TraceAbstraction took 255834.24ms. Allocated memory is still 83.9MB. Free memory was 50.0MB in the beginning and 52.3MB in the end (delta: -2.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:11:36,453 INFO L158 Benchmark]: Witness Printer took 48.46ms. Allocated memory is still 83.9MB. Free memory was 52.3MB in the beginning and 50.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 11:11:36,456 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 65.0MB. Free memory is still 43.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 410.46ms. Allocated memory was 65.0MB in the beginning and 83.9MB in the end (delta: 18.9MB). Free memory was 36.3MB in the beginning and 62.4MB in the end (delta: -26.1MB). Peak memory consumption was 9.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.33ms. Allocated memory is still 83.9MB. Free memory was 62.4MB in the beginning and 61.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.92ms. Allocated memory is still 83.9MB. Free memory was 60.8MB in the beginning and 59.8MB in the end (delta: 968.5kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 1085.49ms. Allocated memory is still 83.9MB. Free memory was 59.6MB in the beginning and 50.6MB in the end (delta: 9.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 255834.24ms. Allocated memory is still 83.9MB. Free memory was 50.0MB in the beginning and 52.3MB in the end (delta: -2.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 48.46ms. Allocated memory is still 83.9MB. Free memory was 52.3MB in the beginning and 50.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0#1_13,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0#1_13,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0#1_13,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0#1_13,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * 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: 13]: 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: 255.7s, OverallIterations: 4, TraceHistogramMax: 5, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 30.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 54.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 4 mSolverCounterUnknown, 26 SdHoareTripleChecker+Valid, 19.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 26 mSDsluCounter, 45 SdHoareTripleChecker+Invalid, 18.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 48 IncrementalHoareTripleChecker+Unchecked, 28 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 54 IncrementalHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 17 mSDtfsCounter, 54 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 52 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 84.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=3, InterpolantAutomatonStates: 28, 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 10 NumberOfFragments, 32 HoareAnnotationTreeSize, 3 FomulaSimplifications, 10 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 321 FormulaSimplificationTreeSizeReductionInter, 54.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 169.3s InterpolantComputationTime, 33 NumberOfCodeBlocks, 32 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 43 ConstructedInterpolants, 4 QuantifiedInterpolants, 471 SizeOfPredicates, 16 NumberOfNonLiveVariables, 104 ConjunctsInSsa, 32 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 15/29 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant [2022-11-20 11:11:36,467 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-11-20 11:11:36,467 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - InvariantResult [Line: 23]: Loop Invariant [2022-11-20 11:11:36,468 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0#1_13,QUANTIFIED] [2022-11-20 11:11:36,468 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0#1_13,QUANTIFIED] [2022-11-20 11:11:36,469 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-11-20 11:11:36,469 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-11-20 11:11:36,469 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-11-20 11:11:36,470 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0#1_13,QUANTIFIED] [2022-11-20 11:11:36,470 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0#1_13,QUANTIFIED] [2022-11-20 11:11:36,470 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-11-20 11:11:36,470 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-11-20 11:11:36,471 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: ((\exists v_ULTIMATE.start_main_~x~0#1_13 : C_FLOAT :: !~fp.eq~FLOAT(x, v_ULTIMATE.start_main_~x~0#1_13) && ~fp.div~FLOAT(unknown-currentRoundingMode-unknown, v_ULTIMATE.start_main_~x~0#1_13, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 5/2)) == x) && x1 == ~fp.div~FLOAT(~roundNearestTiesToEven, x, ~to_fp~LONGDOUBLE(~roundNearestTiesToEven, 5/2))) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - InvariantResult [Line: 13]: Loop Invariant [2022-11-20 11:11:36,471 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-11-20 11:11:36,472 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven RESULT: Ultimate proved your program to be correct! [2022-11-20 11:11:36,632 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ed54436-58b7-4354-b3b3-db1e16af6494/bin/uautomizer-ug76WZFUDN/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