./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/filter2_reinit.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae34833-324f-4cba-b9f0-f260af452dca/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae34833-324f-4cba-b9f0-f260af452dca/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae34833-324f-4cba-b9f0-f260af452dca/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae34833-324f-4cba-b9f0-f260af452dca/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/filter2_reinit.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae34833-324f-4cba-b9f0-f260af452dca/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae34833-324f-4cba-b9f0-f260af452dca/bin/uautomizer-IVEQpCNsaX --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 77348271d6b3efbe553fb980482d4643f648de35ae877e068f35f88b7419ce44 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 08:34:17,949 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 08:34:17,952 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 08:34:18,010 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 08:34:18,011 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 08:34:18,016 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 08:34:18,018 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 08:34:18,022 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 08:34:18,025 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 08:34:18,031 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 08:34:18,032 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 08:34:18,034 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 08:34:18,035 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 08:34:18,037 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 08:34:18,040 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 08:34:18,048 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 08:34:18,050 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 08:34:18,052 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 08:34:18,054 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 08:34:18,063 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 08:34:18,065 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 08:34:18,068 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 08:34:18,071 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 08:34:18,073 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 08:34:18,084 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 08:34:18,084 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 08:34:18,085 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 08:34:18,087 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 08:34:18,088 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 08:34:18,090 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 08:34:18,090 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 08:34:18,092 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 08:34:18,094 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 08:34:18,095 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 08:34:18,097 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 08:34:18,098 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 08:34:18,099 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 08:34:18,099 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 08:34:18,099 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 08:34:18,100 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 08:34:18,101 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 08:34:18,102 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae34833-324f-4cba-b9f0-f260af452dca/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-09 08:34:18,149 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 08:34:18,149 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 08:34:18,150 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 08:34:18,150 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 08:34:18,158 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 08:34:18,158 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 08:34:18,159 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 08:34:18,159 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 08:34:18,159 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 08:34:18,159 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 08:34:18,160 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 08:34:18,161 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 08:34:18,161 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 08:34:18,161 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 08:34:18,162 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 08:34:18,162 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 08:34:18,162 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 08:34:18,162 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 08:34:18,162 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 08:34:18,163 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 08:34:18,163 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 08:34:18,163 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 08:34:18,163 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 08:34:18,164 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 08:34:18,164 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 08:34:18,164 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 08:34:18,164 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 08:34:18,165 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 08:34:18,165 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 08:34:18,167 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 08:34:18,167 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 08:34:18,167 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 08:34:18,168 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_6ae34833-324f-4cba-b9f0-f260af452dca/bin/uautomizer-IVEQpCNsaX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae34833-324f-4cba-b9f0-f260af452dca/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 77348271d6b3efbe553fb980482d4643f648de35ae877e068f35f88b7419ce44 [2021-11-09 08:34:18,507 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 08:34:18,539 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 08:34:18,541 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 08:34:18,543 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 08:34:18,543 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 08:34:18,544 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae34833-324f-4cba-b9f0-f260af452dca/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/float-benchs/filter2_reinit.c [2021-11-09 08:34:18,632 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae34833-324f-4cba-b9f0-f260af452dca/bin/uautomizer-IVEQpCNsaX/data/a90a265ef/e091e744fd4542e2825d6aa7b73a9701/FLAG50f65c498 [2021-11-09 08:34:19,062 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 08:34:19,063 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae34833-324f-4cba-b9f0-f260af452dca/sv-benchmarks/c/float-benchs/filter2_reinit.c [2021-11-09 08:34:19,070 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae34833-324f-4cba-b9f0-f260af452dca/bin/uautomizer-IVEQpCNsaX/data/a90a265ef/e091e744fd4542e2825d6aa7b73a9701/FLAG50f65c498 [2021-11-09 08:34:19,452 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae34833-324f-4cba-b9f0-f260af452dca/bin/uautomizer-IVEQpCNsaX/data/a90a265ef/e091e744fd4542e2825d6aa7b73a9701 [2021-11-09 08:34:19,459 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 08:34:19,460 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 08:34:19,463 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 08:34:19,463 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 08:34:19,467 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 08:34:19,468 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:34:19" (1/1) ... [2021-11-09 08:34:19,469 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@129edca9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:34:19, skipping insertion in model container [2021-11-09 08:34:19,469 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:34:19" (1/1) ... [2021-11-09 08:34:19,476 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 08:34:19,492 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 08:34:19,676 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae34833-324f-4cba-b9f0-f260af452dca/sv-benchmarks/c/float-benchs/filter2_reinit.c[700,713] [2021-11-09 08:34:19,710 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:34:19,720 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 08:34:19,734 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae34833-324f-4cba-b9f0-f260af452dca/sv-benchmarks/c/float-benchs/filter2_reinit.c[700,713] [2021-11-09 08:34:19,740 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:34:19,753 INFO L208 MainTranslator]: Completed translation [2021-11-09 08:34:19,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:34:19 WrapperNode [2021-11-09 08:34:19,753 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 08:34:19,755 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 08:34:19,755 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 08:34:19,755 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 08:34:19,762 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:34:19" (1/1) ... [2021-11-09 08:34:19,772 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:34:19" (1/1) ... [2021-11-09 08:34:19,793 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 08:34:19,794 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 08:34:19,794 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 08:34:19,794 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 08:34:19,803 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:34:19" (1/1) ... [2021-11-09 08:34:19,803 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:34:19" (1/1) ... [2021-11-09 08:34:19,805 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:34:19" (1/1) ... [2021-11-09 08:34:19,806 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:34:19" (1/1) ... [2021-11-09 08:34:19,811 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:34:19" (1/1) ... [2021-11-09 08:34:19,815 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:34:19" (1/1) ... [2021-11-09 08:34:19,830 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:34:19" (1/1) ... [2021-11-09 08:34:19,833 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 08:34:19,834 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 08:34:19,834 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 08:34:19,834 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 08:34:19,835 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:34:19" (1/1) ... [2021-11-09 08:34:19,842 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 08:34:19,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae34833-324f-4cba-b9f0-f260af452dca/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:34:19,868 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae34833-324f-4cba-b9f0-f260af452dca/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 08:34:19,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae34833-324f-4cba-b9f0-f260af452dca/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 08:34:19,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-09 08:34:19,904 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 08:34:19,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 08:34:19,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 08:34:20,121 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 08:34:20,122 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2021-11-09 08:34:20,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:34:20 BoogieIcfgContainer [2021-11-09 08:34:20,124 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 08:34:20,126 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 08:34:20,126 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 08:34:20,129 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 08:34:20,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 08:34:19" (1/3) ... [2021-11-09 08:34:20,131 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36932b85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 08:34:20, skipping insertion in model container [2021-11-09 08:34:20,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:34:19" (2/3) ... [2021-11-09 08:34:20,132 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36932b85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 08:34:20, skipping insertion in model container [2021-11-09 08:34:20,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:34:20" (3/3) ... [2021-11-09 08:34:20,133 INFO L111 eAbstractionObserver]: Analyzing ICFG filter2_reinit.c [2021-11-09 08:34:20,139 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 08:34:20,140 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-09 08:34:20,192 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 08:34:20,201 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-09 08:34:20,201 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-09 08:34:20,218 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 18 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:34:20,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-09 08:34:20,223 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:34:20,224 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:34:20,225 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:34:20,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:34:20,231 INFO L85 PathProgramCache]: Analyzing trace with hash 117626391, now seen corresponding path program 1 times [2021-11-09 08:34:20,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:34:20,240 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109530801] [2021-11-09 08:34:20,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:34:20,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:34:20,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:34:20,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:34:20,384 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:34:20,385 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109530801] [2021-11-09 08:34:20,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109530801] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:34:20,386 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:34:20,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-09 08:34:20,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630276829] [2021-11-09 08:34:20,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-09 08:34:20,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:34:20,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-09 08:34:20,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-09 08:34:20,413 INFO L87 Difference]: Start difference. First operand has 19 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 18 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:34:20,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:34:20,431 INFO L93 Difference]: Finished difference Result 35 states and 46 transitions. [2021-11-09 08:34:20,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-09 08:34:20,433 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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 13 [2021-11-09 08:34:20,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:34:20,463 INFO L225 Difference]: With dead ends: 35 [2021-11-09 08:34:20,463 INFO L226 Difference]: Without dead ends: 15 [2021-11-09 08:34:20,466 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-09 08:34:20,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-11-09 08:34:20,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-11-09 08:34:20,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 14 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:34:20,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2021-11-09 08:34:20,503 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2021-11-09 08:34:20,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:34:20,503 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2021-11-09 08:34:20,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:34:20,504 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2021-11-09 08:34:20,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-09 08:34:20,505 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:34:20,505 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:34:20,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-09 08:34:20,506 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:34:20,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:34:20,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1556007641, now seen corresponding path program 1 times [2021-11-09 08:34:20,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:34:20,508 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788727382] [2021-11-09 08:34:20,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:34:20,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:34:20,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:34:20,580 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 08:34:20,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:34:20,657 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 08:34:20,657 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-09 08:34:20,660 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-09 08:34:20,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-09 08:34:20,666 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-09 08:34:20,669 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-09 08:34:20,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 08:34:20 BoogieIcfgContainer [2021-11-09 08:34:20,698 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-09 08:34:20,699 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-09 08:34:20,699 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-09 08:34:20,699 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-09 08:34:20,700 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:34:20" (3/4) ... [2021-11-09 08:34:20,703 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-09 08:34:20,704 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-09 08:34:20,706 INFO L168 Benchmark]: Toolchain (without parser) took 1244.58 ms. Allocated memory was 90.2 MB in the beginning and 111.1 MB in the end (delta: 21.0 MB). Free memory was 52.8 MB in the beginning and 80.6 MB in the end (delta: -27.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 08:34:20,707 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 90.2 MB. Free memory is still 69.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 08:34:20,708 INFO L168 Benchmark]: CACSL2BoogieTranslator took 291.37 ms. Allocated memory is still 90.2 MB. Free memory was 52.6 MB in the beginning and 66.9 MB in the end (delta: -14.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-09 08:34:20,709 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.53 ms. Allocated memory is still 90.2 MB. Free memory was 66.9 MB in the beginning and 65.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-09 08:34:20,710 INFO L168 Benchmark]: Boogie Preprocessor took 39.10 ms. Allocated memory is still 90.2 MB. Free memory was 65.3 MB in the beginning and 64.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-09 08:34:20,711 INFO L168 Benchmark]: RCFGBuilder took 290.25 ms. Allocated memory is still 90.2 MB. Free memory was 64.2 MB in the beginning and 54.3 MB in the end (delta: 9.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-09 08:34:20,712 INFO L168 Benchmark]: TraceAbstraction took 572.03 ms. Allocated memory was 90.2 MB in the beginning and 111.1 MB in the end (delta: 21.0 MB). Free memory was 53.7 MB in the beginning and 80.6 MB in the end (delta: -26.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 08:34:20,712 INFO L168 Benchmark]: Witness Printer took 5.28 ms. Allocated memory is still 111.1 MB. Free memory is still 80.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 08:34:20,717 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 90.2 MB. Free memory is still 69.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 291.37 ms. Allocated memory is still 90.2 MB. Free memory was 52.6 MB in the beginning and 66.9 MB in the end (delta: -14.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.53 ms. Allocated memory is still 90.2 MB. Free memory was 66.9 MB in the beginning and 65.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 39.10 ms. Allocated memory is still 90.2 MB. Free memory was 65.3 MB in the beginning and 64.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 290.25 ms. Allocated memory is still 90.2 MB. Free memory was 64.2 MB in the beginning and 54.3 MB in the end (delta: 9.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 572.03 ms. Allocated memory was 90.2 MB in the beginning and 111.1 MB in the end (delta: 21.0 MB). Free memory was 53.7 MB in the beginning and 80.6 MB in the end (delta: -26.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 5.28 ms. Allocated memory is still 111.1 MB. Free memory is still 80.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 18]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 53, overapproximation of to_real at line 31, overapproximation of someBinaryArithmeticDOUBLEoperation at line 51. Possible FailurePath: [L23] double E, E0, E1, S0, S1, S; [L24] int i; [L26] E = __VERIFIER_nondet_double() [L27] E0 = __VERIFIER_nondet_double() [L16] COND FALSE !(!cond) [L16] COND FALSE !(!cond) [L31] S0 = 0 [L32] S = 0 [L34] i = 0 [L34] COND TRUE i <= 1000000 [L36] E1 = E0 [L37] E0 = E [L39] E = __VERIFIER_nondet_double() [L16] COND FALSE !(!cond) [L42] COND TRUE __VERIFIER_nondet_int() [L43] E1 = E [L44] E0 = E [L45] S0 = E [L46] S = E [L49] S1 = S0 [L50] S0 = S [L51] S = 0.7*E - E0*1.3 + E1*1.1 + S0*1.4 - S1*0.7 [L18] COND TRUE !(cond) [L18] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 20 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 12 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-09 08:34:20,778 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae34833-324f-4cba-b9f0-f260af452dca/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae34833-324f-4cba-b9f0-f260af452dca/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae34833-324f-4cba-b9f0-f260af452dca/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae34833-324f-4cba-b9f0-f260af452dca/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae34833-324f-4cba-b9f0-f260af452dca/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/filter2_reinit.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae34833-324f-4cba-b9f0-f260af452dca/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae34833-324f-4cba-b9f0-f260af452dca/bin/uautomizer-IVEQpCNsaX --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 77348271d6b3efbe553fb980482d4643f648de35ae877e068f35f88b7419ce44 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 08:34:23,742 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 08:34:23,745 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 08:34:23,780 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 08:34:23,781 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 08:34:23,783 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 08:34:23,786 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 08:34:23,789 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 08:34:23,791 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 08:34:23,793 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 08:34:23,795 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 08:34:23,797 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 08:34:23,798 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 08:34:23,799 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 08:34:23,801 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 08:34:23,803 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 08:34:23,805 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 08:34:23,806 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 08:34:23,809 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 08:34:23,813 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 08:34:23,815 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 08:34:23,820 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 08:34:23,823 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 08:34:23,825 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 08:34:23,830 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 08:34:23,840 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 08:34:23,841 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 08:34:23,842 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 08:34:23,843 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 08:34:23,846 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 08:34:23,847 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 08:34:23,849 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 08:34:23,851 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 08:34:23,853 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 08:34:23,855 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 08:34:23,856 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 08:34:23,875 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 08:34:23,876 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 08:34:23,876 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 08:34:23,879 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 08:34:23,880 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 08:34:23,886 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae34833-324f-4cba-b9f0-f260af452dca/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-11-09 08:34:23,944 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 08:34:23,945 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 08:34:23,946 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 08:34:23,946 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 08:34:23,949 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 08:34:23,950 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 08:34:23,950 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 08:34:23,952 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 08:34:23,952 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 08:34:23,952 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 08:34:23,954 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 08:34:23,954 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 08:34:23,955 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 08:34:23,955 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 08:34:23,956 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-09 08:34:23,956 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-09 08:34:23,957 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 08:34:23,957 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 08:34:23,957 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 08:34:23,958 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 08:34:23,958 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 08:34:23,959 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 08:34:23,959 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 08:34:23,959 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 08:34:23,960 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 08:34:23,960 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 08:34:23,961 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 08:34:23,961 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-09 08:34:23,962 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-09 08:34:23,962 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 08:34:23,963 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 08:34:23,963 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 08:34:23,964 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 08:34:23,964 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-09 08:34:23,964 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_6ae34833-324f-4cba-b9f0-f260af452dca/bin/uautomizer-IVEQpCNsaX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae34833-324f-4cba-b9f0-f260af452dca/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 77348271d6b3efbe553fb980482d4643f648de35ae877e068f35f88b7419ce44 [2021-11-09 08:34:24,428 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 08:34:24,458 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 08:34:24,461 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 08:34:24,462 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 08:34:24,463 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 08:34:24,464 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae34833-324f-4cba-b9f0-f260af452dca/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/float-benchs/filter2_reinit.c [2021-11-09 08:34:24,538 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae34833-324f-4cba-b9f0-f260af452dca/bin/uautomizer-IVEQpCNsaX/data/9e888085d/4aef5b783b5248e2984dfb0c80ce60be/FLAGd0b45427b [2021-11-09 08:34:25,096 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 08:34:25,097 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae34833-324f-4cba-b9f0-f260af452dca/sv-benchmarks/c/float-benchs/filter2_reinit.c [2021-11-09 08:34:25,105 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae34833-324f-4cba-b9f0-f260af452dca/bin/uautomizer-IVEQpCNsaX/data/9e888085d/4aef5b783b5248e2984dfb0c80ce60be/FLAGd0b45427b [2021-11-09 08:34:25,451 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae34833-324f-4cba-b9f0-f260af452dca/bin/uautomizer-IVEQpCNsaX/data/9e888085d/4aef5b783b5248e2984dfb0c80ce60be [2021-11-09 08:34:25,454 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 08:34:25,455 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 08:34:25,465 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 08:34:25,466 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 08:34:25,470 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 08:34:25,471 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:34:25" (1/1) ... [2021-11-09 08:34:25,474 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a45216f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:34:25, skipping insertion in model container [2021-11-09 08:34:25,474 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:34:25" (1/1) ... [2021-11-09 08:34:25,483 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 08:34:25,503 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 08:34:25,668 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae34833-324f-4cba-b9f0-f260af452dca/sv-benchmarks/c/float-benchs/filter2_reinit.c[700,713] [2021-11-09 08:34:25,689 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:34:25,715 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 08:34:25,738 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae34833-324f-4cba-b9f0-f260af452dca/sv-benchmarks/c/float-benchs/filter2_reinit.c[700,713] [2021-11-09 08:34:25,771 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:34:25,790 INFO L208 MainTranslator]: Completed translation [2021-11-09 08:34:25,791 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:34:25 WrapperNode [2021-11-09 08:34:25,791 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 08:34:25,792 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 08:34:25,792 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 08:34:25,793 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 08:34:25,829 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:34:25" (1/1) ... [2021-11-09 08:34:25,841 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:34:25" (1/1) ... [2021-11-09 08:34:25,899 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 08:34:25,900 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 08:34:25,900 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 08:34:25,901 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 08:34:25,911 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:34:25" (1/1) ... [2021-11-09 08:34:25,911 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:34:25" (1/1) ... [2021-11-09 08:34:25,915 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:34:25" (1/1) ... [2021-11-09 08:34:25,916 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:34:25" (1/1) ... [2021-11-09 08:34:25,924 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:34:25" (1/1) ... [2021-11-09 08:34:25,928 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:34:25" (1/1) ... [2021-11-09 08:34:25,930 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:34:25" (1/1) ... [2021-11-09 08:34:25,934 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 08:34:25,935 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 08:34:25,935 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 08:34:25,935 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 08:34:25,936 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:34:25" (1/1) ... [2021-11-09 08:34:25,953 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 08:34:25,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae34833-324f-4cba-b9f0-f260af452dca/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:34:25,989 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae34833-324f-4cba-b9f0-f260af452dca/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 08:34:26,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae34833-324f-4cba-b9f0-f260af452dca/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 08:34:26,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-09 08:34:26,050 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 08:34:26,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 08:34:26,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 08:34:28,702 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 08:34:28,703 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2021-11-09 08:34:28,705 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:34:28 BoogieIcfgContainer [2021-11-09 08:34:28,705 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 08:34:28,708 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 08:34:28,708 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 08:34:28,712 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 08:34:28,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 08:34:25" (1/3) ... [2021-11-09 08:34:28,713 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7421bed7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 08:34:28, skipping insertion in model container [2021-11-09 08:34:28,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:34:25" (2/3) ... [2021-11-09 08:34:28,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7421bed7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 08:34:28, skipping insertion in model container [2021-11-09 08:34:28,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:34:28" (3/3) ... [2021-11-09 08:34:28,716 INFO L111 eAbstractionObserver]: Analyzing ICFG filter2_reinit.c [2021-11-09 08:34:28,724 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 08:34:28,724 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-09 08:34:28,787 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 08:34:28,808 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-09 08:34:28,808 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-09 08:34:28,838 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 16 states have (on average 1.5) internal successors, (24), 17 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:34:28,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-09 08:34:28,858 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:34:28,859 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:34:28,860 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:34:28,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:34:28,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1804972244, now seen corresponding path program 1 times [2021-11-09 08:34:28,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:34:28,890 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [198751951] [2021-11-09 08:34:28,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:34:28,891 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:34:28,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae34833-324f-4cba-b9f0-f260af452dca/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:34:28,893 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae34833-324f-4cba-b9f0-f260af452dca/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:34:28,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae34833-324f-4cba-b9f0-f260af452dca/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-09 08:34:30,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:34:30,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-09 08:34:30,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:34:30,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:34:30,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:34:30,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:34:30,860 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:34:30,861 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [198751951] [2021-11-09 08:34:30,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [198751951] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:34:30,863 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:34:30,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-09 08:34:30,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089233471] [2021-11-09 08:34:30,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-09 08:34:30,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:34:30,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-09 08:34:30,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-09 08:34:30,891 INFO L87 Difference]: Start difference. First operand has 18 states, 16 states have (on average 1.5) internal successors, (24), 17 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:34:30,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:34:30,909 INFO L93 Difference]: Finished difference Result 33 states and 44 transitions. [2021-11-09 08:34:30,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-09 08:34:30,911 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 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) Word has length 12 [2021-11-09 08:34:30,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:34:30,921 INFO L225 Difference]: With dead ends: 33 [2021-11-09 08:34:30,922 INFO L226 Difference]: Without dead ends: 14 [2021-11-09 08:34:30,925 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-09 08:34:30,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-11-09 08:34:30,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-11-09 08:34:30,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:34:30,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2021-11-09 08:34:30,962 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 12 [2021-11-09 08:34:30,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:34:30,963 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2021-11-09 08:34:30,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:34:30,964 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2021-11-09 08:34:30,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-09 08:34:30,965 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:34:30,965 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:34:31,010 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae34833-324f-4cba-b9f0-f260af452dca/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-09 08:34:31,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae34833-324f-4cba-b9f0-f260af452dca/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:34:31,191 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:34:31,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:34:31,192 INFO L85 PathProgramCache]: Analyzing trace with hash 604445650, now seen corresponding path program 1 times [2021-11-09 08:34:31,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:34:31,193 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1465548167] [2021-11-09 08:34:31,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:34:31,194 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:34:31,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae34833-324f-4cba-b9f0-f260af452dca/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:34:31,199 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae34833-324f-4cba-b9f0-f260af452dca/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:34:31,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae34833-324f-4cba-b9f0-f260af452dca/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-09 08:34:50,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:34:50,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-09 08:34:50,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:36:33,981 WARN L838 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~E1~0 (_ FloatingPoint 11 53))) (and (let ((.cse2 (let ((.cse4 ((_ to_fp 11 53) roundNearestTiesToEven (/ 7.0 10.0)))) (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 ULTIMATE.start_main_~E1~0) (fp.mul roundNearestTiesToEven ULTIMATE.start_main_~E1~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 13.0 10.0)))) (fp.mul roundNearestTiesToEven ULTIMATE.start_main_~E1~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 11.0 10.0)))) (fp.mul roundNearestTiesToEven ULTIMATE.start_main_~E1~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 7.0 5.0)))) (fp.mul roundNearestTiesToEven ULTIMATE.start_main_~E1~0 .cse4)))) (.cse3 ((_ to_fp 11 53) roundNearestTiesToEven 4.0))) (let ((.cse0 (fp.leq .cse2 .cse3)) (.cse1 (fp.geq .cse2 (fp.neg .cse3)))) (or (and (or (not .cse0) (not .cse1)) (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) (and .cse0 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)) .cse1)))) (fp.geq ULTIMATE.start_main_~E1~0 (_ +zero 11 53)) (fp.leq ULTIMATE.start_main_~E1~0 ((_ to_fp 11 53) roundNearestTiesToEven 1.0)))) is different from false [2021-11-09 08:36:36,036 WARN L860 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~E1~0 (_ FloatingPoint 11 53))) (and (let ((.cse2 (let ((.cse4 ((_ to_fp 11 53) roundNearestTiesToEven (/ 7.0 10.0)))) (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 ULTIMATE.start_main_~E1~0) (fp.mul roundNearestTiesToEven ULTIMATE.start_main_~E1~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 13.0 10.0)))) (fp.mul roundNearestTiesToEven ULTIMATE.start_main_~E1~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 11.0 10.0)))) (fp.mul roundNearestTiesToEven ULTIMATE.start_main_~E1~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 7.0 5.0)))) (fp.mul roundNearestTiesToEven ULTIMATE.start_main_~E1~0 .cse4)))) (.cse3 ((_ to_fp 11 53) roundNearestTiesToEven 4.0))) (let ((.cse0 (fp.leq .cse2 .cse3)) (.cse1 (fp.geq .cse2 (fp.neg .cse3)))) (or (and (or (not .cse0) (not .cse1)) (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) (and .cse0 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)) .cse1)))) (fp.geq ULTIMATE.start_main_~E1~0 (_ +zero 11 53)) (fp.leq ULTIMATE.start_main_~E1~0 ((_ to_fp 11 53) roundNearestTiesToEven 1.0)))) is different from true [2021-11-09 08:37:24,020 WARN L838 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~E1~0 (_ FloatingPoint 11 53))) (and (let ((.cse0 (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven (/ 7.0 10.0)))) (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 ULTIMATE.start_main_~E1~0) (fp.mul roundNearestTiesToEven ULTIMATE.start_main_~E1~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 13.0 10.0)))) (fp.mul roundNearestTiesToEven ULTIMATE.start_main_~E1~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 11.0 10.0)))) (fp.mul roundNearestTiesToEven ULTIMATE.start_main_~E1~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 7.0 5.0)))) (fp.mul roundNearestTiesToEven ULTIMATE.start_main_~E1~0 .cse2)))) (.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 4.0))) (or (not (fp.leq .cse0 .cse1)) (not (fp.geq .cse0 (fp.neg .cse1))))) (fp.geq ULTIMATE.start_main_~E1~0 (_ +zero 11 53)) (fp.leq ULTIMATE.start_main_~E1~0 ((_ to_fp 11 53) roundNearestTiesToEven 1.0)))) is different from false [2021-11-09 08:37:26,077 WARN L860 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~E1~0 (_ FloatingPoint 11 53))) (and (let ((.cse0 (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven (/ 7.0 10.0)))) (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse2 ULTIMATE.start_main_~E1~0) (fp.mul roundNearestTiesToEven ULTIMATE.start_main_~E1~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 13.0 10.0)))) (fp.mul roundNearestTiesToEven ULTIMATE.start_main_~E1~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 11.0 10.0)))) (fp.mul roundNearestTiesToEven ULTIMATE.start_main_~E1~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 7.0 5.0)))) (fp.mul roundNearestTiesToEven ULTIMATE.start_main_~E1~0 .cse2)))) (.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 4.0))) (or (not (fp.leq .cse0 .cse1)) (not (fp.geq .cse0 (fp.neg .cse1))))) (fp.geq ULTIMATE.start_main_~E1~0 (_ +zero 11 53)) (fp.leq ULTIMATE.start_main_~E1~0 ((_ to_fp 11 53) roundNearestTiesToEven 1.0)))) is different from true [2021-11-09 08:37:26,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:37:26,078 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:37:37,891 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 7.0 10.0)))) (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse2 c_ULTIMATE.start_main_~E~0) (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~E0~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 13.0 10.0)))) (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~E1~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 11.0 10.0)))) (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~S~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 7.0 5.0)))) (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~S0~0 .cse2)))) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 4.0))) (and (fp.leq .cse0 .cse1) (fp.geq .cse0 (fp.neg .cse1)))) is different from false [2021-11-09 08:37:40,092 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 7.0 10.0)))) (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse2 c_ULTIMATE.start_main_~E~0) (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~E0~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 13.0 10.0)))) (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~E1~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 11.0 10.0)))) (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~S~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 7.0 5.0)))) (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~S0~0 .cse2)))) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 4.0))) (and (fp.leq .cse0 .cse1) (fp.geq .cse0 (fp.neg .cse1)))) is different from true [2021-11-09 08:37:51,156 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 7.0 10.0)))) (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse2 c_ULTIMATE.start_main_~E~0) (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~E~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 13.0 10.0)))) (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~E~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 11.0 10.0)))) (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~E~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 7.0 5.0)))) (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~E~0 .cse2)))) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 4.0))) (and (fp.geq .cse0 (fp.neg .cse1)) (fp.leq .cse0 .cse1))) is different from false [2021-11-09 08:37:53,279 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 7.0 10.0)))) (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse2 c_ULTIMATE.start_main_~E~0) (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~E~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 13.0 10.0)))) (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~E~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 11.0 10.0)))) (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~E~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 7.0 5.0)))) (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~E~0 .cse2)))) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 4.0))) (and (fp.geq .cse0 (fp.neg .cse1)) (fp.leq .cse0 .cse1))) is different from true [2021-11-09 08:38:08,730 WARN L838 $PredicateComparison]: unable to prove that (or (let ((.cse0 (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 7.0 10.0)))) (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse2 c_ULTIMATE.start_main_~E~0) (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~E~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 13.0 10.0)))) (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~E~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 11.0 10.0)))) (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~E~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 7.0 5.0)))) (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~E~0 .cse2)))) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 4.0))) (and (fp.geq .cse0 (fp.neg .cse1)) (fp.leq .cse0 .cse1))) (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv0 32))) is different from false [2021-11-09 08:38:10,868 WARN L860 $PredicateComparison]: unable to prove that (or (let ((.cse0 (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 7.0 10.0)))) (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse2 c_ULTIMATE.start_main_~E~0) (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~E~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 13.0 10.0)))) (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~E~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 11.0 10.0)))) (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~E~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 7.0 5.0)))) (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~E~0 .cse2)))) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 4.0))) (and (fp.geq .cse0 (fp.neg .cse1)) (fp.leq .cse0 .cse1))) (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv0 32))) is different from true [2021-11-09 08:38:57,017 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~E~0_11 (_ FloatingPoint 11 53))) (or (not (fp.geq v_ULTIMATE.start_main_~E~0_11 (_ +zero 11 53))) (let ((.cse0 (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 7.0 10.0)))) (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse2 v_ULTIMATE.start_main_~E~0_11) (fp.mul c_currentRoundingMode v_ULTIMATE.start_main_~E~0_11 ((_ to_fp 11 53) c_currentRoundingMode (/ 13.0 10.0)))) (fp.mul c_currentRoundingMode v_ULTIMATE.start_main_~E~0_11 ((_ to_fp 11 53) c_currentRoundingMode (/ 11.0 10.0)))) (fp.mul c_currentRoundingMode v_ULTIMATE.start_main_~E~0_11 ((_ to_fp 11 53) c_currentRoundingMode (/ 7.0 5.0)))) (fp.mul c_currentRoundingMode v_ULTIMATE.start_main_~E~0_11 .cse2)))) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 4.0))) (and (fp.geq .cse0 (fp.neg .cse1)) (fp.leq .cse0 .cse1))) (not (fp.leq v_ULTIMATE.start_main_~E~0_11 ((_ to_fp 11 53) c_currentRoundingMode 1.0))))) is different from false [2021-11-09 08:38:59,165 WARN L860 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~E~0_11 (_ FloatingPoint 11 53))) (or (not (fp.geq v_ULTIMATE.start_main_~E~0_11 (_ +zero 11 53))) (let ((.cse0 (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 7.0 10.0)))) (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse2 v_ULTIMATE.start_main_~E~0_11) (fp.mul c_currentRoundingMode v_ULTIMATE.start_main_~E~0_11 ((_ to_fp 11 53) c_currentRoundingMode (/ 13.0 10.0)))) (fp.mul c_currentRoundingMode v_ULTIMATE.start_main_~E~0_11 ((_ to_fp 11 53) c_currentRoundingMode (/ 11.0 10.0)))) (fp.mul c_currentRoundingMode v_ULTIMATE.start_main_~E~0_11 ((_ to_fp 11 53) c_currentRoundingMode (/ 7.0 5.0)))) (fp.mul c_currentRoundingMode v_ULTIMATE.start_main_~E~0_11 .cse2)))) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 4.0))) (and (fp.geq .cse0 (fp.neg .cse1)) (fp.leq .cse0 .cse1))) (not (fp.leq v_ULTIMATE.start_main_~E~0_11 ((_ to_fp 11 53) c_currentRoundingMode 1.0))))) is different from true [2021-11-09 08:42:42,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:42:42,437 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:42:42,437 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1465548167] [2021-11-09 08:42:42,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1465548167] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:42:42,438 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:42:42,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 12 [2021-11-09 08:42:42,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979972501] [2021-11-09 08:42:42,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-09 08:42:42,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:42:42,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-09 08:42:42,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=27, Unknown=12, NotChecked=90, Total=156 [2021-11-09 08:42:42,444 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 12 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:42:44,565 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_ULTIMATE.start_main_~E~0_11 (_ FloatingPoint 11 53))) (or (not (fp.geq v_ULTIMATE.start_main_~E~0_11 (_ +zero 11 53))) (let ((.cse0 (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 7.0 10.0)))) (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse2 v_ULTIMATE.start_main_~E~0_11) (fp.mul c_currentRoundingMode v_ULTIMATE.start_main_~E~0_11 ((_ to_fp 11 53) c_currentRoundingMode (/ 13.0 10.0)))) (fp.mul c_currentRoundingMode v_ULTIMATE.start_main_~E~0_11 ((_ to_fp 11 53) c_currentRoundingMode (/ 11.0 10.0)))) (fp.mul c_currentRoundingMode v_ULTIMATE.start_main_~E~0_11 ((_ to_fp 11 53) c_currentRoundingMode (/ 7.0 5.0)))) (fp.mul c_currentRoundingMode v_ULTIMATE.start_main_~E~0_11 .cse2)))) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 4.0))) (and (fp.geq .cse0 (fp.neg .cse1)) (fp.leq .cse0 .cse1))) (not (fp.leq v_ULTIMATE.start_main_~E~0_11 ((_ to_fp 11 53) c_currentRoundingMode 1.0))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-11-09 08:42:46,729 WARN L860 $PredicateComparison]: unable to prove that (and (forall ((v_ULTIMATE.start_main_~E~0_11 (_ FloatingPoint 11 53))) (or (not (fp.geq v_ULTIMATE.start_main_~E~0_11 (_ +zero 11 53))) (let ((.cse0 (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 7.0 10.0)))) (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse2 v_ULTIMATE.start_main_~E~0_11) (fp.mul c_currentRoundingMode v_ULTIMATE.start_main_~E~0_11 ((_ to_fp 11 53) c_currentRoundingMode (/ 13.0 10.0)))) (fp.mul c_currentRoundingMode v_ULTIMATE.start_main_~E~0_11 ((_ to_fp 11 53) c_currentRoundingMode (/ 11.0 10.0)))) (fp.mul c_currentRoundingMode v_ULTIMATE.start_main_~E~0_11 ((_ to_fp 11 53) c_currentRoundingMode (/ 7.0 5.0)))) (fp.mul c_currentRoundingMode v_ULTIMATE.start_main_~E~0_11 .cse2)))) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 4.0))) (and (fp.geq .cse0 (fp.neg .cse1)) (fp.leq .cse0 .cse1))) (not (fp.leq v_ULTIMATE.start_main_~E~0_11 ((_ to_fp 11 53) c_currentRoundingMode 1.0))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-11-09 08:42:48,847 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv0 32)))) (and (let ((.cse1 (fp.geq c_ULTIMATE.start_main_~E~0 (_ +zero 11 53))) (.cse2 (fp.leq c_ULTIMATE.start_main_~E~0 ((_ to_fp 11 53) c_currentRoundingMode 1.0)))) (or (and .cse0 (or (not .cse1) (not .cse2))) (and (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32)) .cse1 .cse2))) (or (let ((.cse3 (let ((.cse5 ((_ to_fp 11 53) c_currentRoundingMode (/ 7.0 10.0)))) (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse5 c_ULTIMATE.start_main_~E~0) (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~E~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 13.0 10.0)))) (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~E~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 11.0 10.0)))) (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~E~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 7.0 5.0)))) (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~E~0 .cse5)))) (.cse4 ((_ to_fp 11 53) c_currentRoundingMode 4.0))) (and (fp.geq .cse3 (fp.neg .cse4)) (fp.leq .cse3 .cse4))) .cse0) (= c_currentRoundingMode roundNearestTiesToEven))) is different from false [2021-11-09 08:42:51,765 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 7.0 10.0)))) (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse2 c_ULTIMATE.start_main_~E~0) (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~E~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 13.0 10.0)))) (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~E~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 11.0 10.0)))) (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~E~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 7.0 5.0)))) (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~E~0 .cse2)))) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 4.0))) (and (fp.geq .cse0 (fp.neg .cse1)) (fp.leq .cse0 .cse1) (fp.geq c_ULTIMATE.start_main_~E~0 (_ +zero 11 53)) (= c_currentRoundingMode roundNearestTiesToEven) (fp.leq c_ULTIMATE.start_main_~E~0 ((_ to_fp 11 53) c_currentRoundingMode 1.0)))) is different from false [2021-11-09 08:42:53,909 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 7.0 10.0)))) (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse2 c_ULTIMATE.start_main_~E~0) (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~E~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 13.0 10.0)))) (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~E~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 11.0 10.0)))) (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~E~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 7.0 5.0)))) (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~E~0 .cse2)))) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 4.0))) (and (fp.geq .cse0 (fp.neg .cse1)) (fp.leq .cse0 .cse1) (fp.geq c_ULTIMATE.start_main_~E~0 (_ +zero 11 53)) (= c_currentRoundingMode roundNearestTiesToEven) (fp.leq c_ULTIMATE.start_main_~E~0 ((_ to_fp 11 53) c_currentRoundingMode 1.0)))) is different from true [2021-11-09 08:42:56,871 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 7.0 10.0)))) (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse2 c_ULTIMATE.start_main_~E~0) (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~E0~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 13.0 10.0)))) (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~E1~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 11.0 10.0)))) (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~S~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 7.0 5.0)))) (fp.mul c_currentRoundingMode c_ULTIMATE.start_main_~S0~0 .cse2)))) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 4.0))) (and (= c_ULTIMATE.start_main_~E~0 c_ULTIMATE.start_main_~S~0) (fp.leq .cse0 .cse1) (fp.geq c_ULTIMATE.start_main_~E~0 (_ +zero 11 53)) (= c_ULTIMATE.start_main_~E~0 c_ULTIMATE.start_main_~E1~0) (= c_ULTIMATE.start_main_~E~0 c_ULTIMATE.start_main_~S0~0) (fp.geq .cse0 (fp.neg .cse1)) (= c_ULTIMATE.start_main_~E~0 c_ULTIMATE.start_main_~E0~0) (= c_currentRoundingMode roundNearestTiesToEven) (fp.leq c_ULTIMATE.start_main_~E~0 ((_ to_fp 11 53) c_currentRoundingMode 1.0)))) is different from true [2021-11-09 08:42:58,978 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_main_~E1~0 (_ FloatingPoint 11 53))) (and (let ((.cse2 (let ((.cse4 ((_ to_fp 11 53) roundNearestTiesToEven (/ 7.0 10.0)))) (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse4 ULTIMATE.start_main_~E1~0) (fp.mul roundNearestTiesToEven ULTIMATE.start_main_~E1~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 13.0 10.0)))) (fp.mul roundNearestTiesToEven ULTIMATE.start_main_~E1~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 11.0 10.0)))) (fp.mul roundNearestTiesToEven ULTIMATE.start_main_~E1~0 ((_ to_fp 11 53) roundNearestTiesToEven (/ 7.0 5.0)))) (fp.mul roundNearestTiesToEven ULTIMATE.start_main_~E1~0 .cse4)))) (.cse3 ((_ to_fp 11 53) roundNearestTiesToEven 4.0))) (let ((.cse0 (fp.leq .cse2 .cse3)) (.cse1 (fp.geq .cse2 (fp.neg .cse3)))) (or (and (or (not .cse0) (not .cse1)) (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) (and .cse0 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)) .cse1)))) (fp.geq ULTIMATE.start_main_~E1~0 (_ +zero 11 53)) (fp.leq ULTIMATE.start_main_~E1~0 ((_ to_fp 11 53) roundNearestTiesToEven 1.0)))) (not (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)))) is different from false [2021-11-09 08:43:06,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:43:06,529 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2021-11-09 08:43:06,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-09 08:43:06,531 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 12 states have internal predecessors, (24), 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 12 [2021-11-09 08:43:06,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:43:06,533 INFO L225 Difference]: With dead ends: 26 [2021-11-09 08:43:06,533 INFO L226 Difference]: Without dead ends: 24 [2021-11-09 08:43:06,536 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 11 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 42.5s TimeCoverageRelationStatistics Valid=37, Invalid=30, Unknown=19, NotChecked=220, Total=306 [2021-11-09 08:43:06,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-11-09 08:43:06,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 19. [2021-11-09 08:43:06,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:43:06,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-11-09 08:43:06,544 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 12 [2021-11-09 08:43:06,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:43:06,545 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-11-09 08:43:06,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 12 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:43:06,546 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-11-09 08:43:06,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-09 08:43:06,547 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:43:06,547 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:43:06,583 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae34833-324f-4cba-b9f0-f260af452dca/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-09 08:43:06,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae34833-324f-4cba-b9f0-f260af452dca/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:43:06,748 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:43:06,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:43:06,749 INFO L85 PathProgramCache]: Analyzing trace with hash 604505232, now seen corresponding path program 1 times [2021-11-09 08:43:06,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:43:06,751 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [832277144] [2021-11-09 08:43:06,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:43:06,752 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:43:06,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae34833-324f-4cba-b9f0-f260af452dca/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:43:06,753 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae34833-324f-4cba-b9f0-f260af452dca/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:43:06,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ae34833-324f-4cba-b9f0-f260af452dca/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-09 08:43:20,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:43:20,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-09 08:43:20,186 INFO L286 TraceCheckSpWp]: Computing forward predicates...