./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/filter1.c.v+lhb-reducer.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_9defc233-3298-4796-9255-135cc57ae9d2/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9defc233-3298-4796-9255-135cc57ae9d2/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_9defc233-3298-4796-9255-135cc57ae9d2/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9defc233-3298-4796-9255-135cc57ae9d2/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/filter1.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9defc233-3298-4796-9255-135cc57ae9d2/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_9defc233-3298-4796-9255-135cc57ae9d2/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 27e2c506f8c4790ab21ed41c19bd1ea2839907b43d1ff7cacbbc276ad919ab4e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 08:57:12,038 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 08:57:12,041 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 08:57:12,095 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 08:57:12,096 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 08:57:12,101 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 08:57:12,103 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 08:57:12,107 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 08:57:12,109 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 08:57:12,115 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 08:57:12,116 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 08:57:12,118 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 08:57:12,119 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 08:57:12,121 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 08:57:12,123 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 08:57:12,128 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 08:57:12,130 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 08:57:12,131 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 08:57:12,134 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 08:57:12,142 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 08:57:12,144 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 08:57:12,146 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 08:57:12,149 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 08:57:12,150 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 08:57:12,159 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 08:57:12,160 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 08:57:12,161 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 08:57:12,163 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 08:57:12,164 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 08:57:12,165 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 08:57:12,166 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 08:57:12,167 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 08:57:12,169 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 08:57:12,170 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 08:57:12,172 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 08:57:12,173 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 08:57:12,173 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 08:57:12,174 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 08:57:12,174 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 08:57:12,175 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 08:57:12,176 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 08:57:12,177 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9defc233-3298-4796-9255-135cc57ae9d2/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-09 08:57:12,216 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 08:57:12,216 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 08:57:12,217 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 08:57:12,217 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 08:57:12,218 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 08:57:12,218 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 08:57:12,218 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 08:57:12,219 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 08:57:12,219 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 08:57:12,219 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 08:57:12,219 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 08:57:12,220 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 08:57:12,220 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 08:57:12,220 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 08:57:12,220 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 08:57:12,221 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 08:57:12,221 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 08:57:12,221 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 08:57:12,221 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 08:57:12,222 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 08:57:12,222 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 08:57:12,222 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 08:57:12,222 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 08:57:12,223 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 08:57:12,223 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 08:57:12,223 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 08:57:12,223 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 08:57:12,223 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 08:57:12,224 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 08:57:12,224 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 08:57:12,224 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 08:57:12,224 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 08:57:12,225 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_9defc233-3298-4796-9255-135cc57ae9d2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9defc233-3298-4796-9255-135cc57ae9d2/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 27e2c506f8c4790ab21ed41c19bd1ea2839907b43d1ff7cacbbc276ad919ab4e [2021-11-09 08:57:12,491 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 08:57:12,513 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 08:57:12,516 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 08:57:12,517 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 08:57:12,518 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 08:57:12,519 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9defc233-3298-4796-9255-135cc57ae9d2/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/float-benchs/filter1.c.v+lhb-reducer.c [2021-11-09 08:57:12,590 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9defc233-3298-4796-9255-135cc57ae9d2/bin/uautomizer-IVEQpCNsaX/data/146b24946/a0f072f9637d478493df625b1062f160/FLAGec6ee70f1 [2021-11-09 08:57:13,007 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 08:57:13,007 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9defc233-3298-4796-9255-135cc57ae9d2/sv-benchmarks/c/float-benchs/filter1.c.v+lhb-reducer.c [2021-11-09 08:57:13,015 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9defc233-3298-4796-9255-135cc57ae9d2/bin/uautomizer-IVEQpCNsaX/data/146b24946/a0f072f9637d478493df625b1062f160/FLAGec6ee70f1 [2021-11-09 08:57:13,417 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9defc233-3298-4796-9255-135cc57ae9d2/bin/uautomizer-IVEQpCNsaX/data/146b24946/a0f072f9637d478493df625b1062f160 [2021-11-09 08:57:13,419 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 08:57:13,420 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 08:57:13,424 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 08:57:13,424 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 08:57:13,428 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 08:57:13,429 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:57:13" (1/1) ... [2021-11-09 08:57:13,430 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@696e2d2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:57:13, skipping insertion in model container [2021-11-09 08:57:13,430 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:57:13" (1/1) ... [2021-11-09 08:57:13,438 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 08:57:13,459 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 08:57:13,666 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_9defc233-3298-4796-9255-135cc57ae9d2/sv-benchmarks/c/float-benchs/filter1.c.v+lhb-reducer.c[1355,1368] [2021-11-09 08:57:13,675 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_9defc233-3298-4796-9255-135cc57ae9d2/sv-benchmarks/c/float-benchs/filter1.c.v+lhb-reducer.c[2394,2407] [2021-11-09 08:57:13,681 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:57:13,691 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 08:57:13,709 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_9defc233-3298-4796-9255-135cc57ae9d2/sv-benchmarks/c/float-benchs/filter1.c.v+lhb-reducer.c[1355,1368] [2021-11-09 08:57:13,714 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_9defc233-3298-4796-9255-135cc57ae9d2/sv-benchmarks/c/float-benchs/filter1.c.v+lhb-reducer.c[2394,2407] [2021-11-09 08:57:13,719 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:57:13,732 INFO L208 MainTranslator]: Completed translation [2021-11-09 08:57:13,733 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:57:13 WrapperNode [2021-11-09 08:57:13,733 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 08:57:13,734 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 08:57:13,735 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 08:57:13,735 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 08:57:13,743 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:57:13" (1/1) ... [2021-11-09 08:57:13,751 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:57:13" (1/1) ... [2021-11-09 08:57:13,770 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 08:57:13,771 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 08:57:13,771 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 08:57:13,772 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 08:57:13,780 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:57:13" (1/1) ... [2021-11-09 08:57:13,780 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:57:13" (1/1) ... [2021-11-09 08:57:13,782 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:57:13" (1/1) ... [2021-11-09 08:57:13,783 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:57:13" (1/1) ... [2021-11-09 08:57:13,788 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:57:13" (1/1) ... [2021-11-09 08:57:13,791 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:57:13" (1/1) ... [2021-11-09 08:57:13,792 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:57:13" (1/1) ... [2021-11-09 08:57:13,795 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 08:57:13,796 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 08:57:13,797 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 08:57:13,797 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 08:57:13,798 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:57:13" (1/1) ... [2021-11-09 08:57:13,806 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 08:57:13,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9defc233-3298-4796-9255-135cc57ae9d2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:57:13,845 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9defc233-3298-4796-9255-135cc57ae9d2/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 08:57:13,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9defc233-3298-4796-9255-135cc57ae9d2/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 08:57:13,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-09 08:57:13,909 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 08:57:13,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 08:57:13,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 08:57:14,252 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 08:57:14,253 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-09 08:57:14,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:57:14 BoogieIcfgContainer [2021-11-09 08:57:14,255 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 08:57:14,257 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 08:57:14,257 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 08:57:14,261 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 08:57:14,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 08:57:13" (1/3) ... [2021-11-09 08:57:14,262 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ddeb175 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 08:57:14, skipping insertion in model container [2021-11-09 08:57:14,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:57:13" (2/3) ... [2021-11-09 08:57:14,263 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ddeb175 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 08:57:14, skipping insertion in model container [2021-11-09 08:57:14,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:57:14" (3/3) ... [2021-11-09 08:57:14,264 INFO L111 eAbstractionObserver]: Analyzing ICFG filter1.c.v+lhb-reducer.c [2021-11-09 08:57:14,270 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 08:57:14,270 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-09 08:57:14,318 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 08:57:14,325 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 08:57:14,325 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-09 08:57:14,340 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 30 states have (on average 1.6) internal successors, (48), 32 states have internal predecessors, (48), 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 08:57:14,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-09 08:57:14,345 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:57:14,345 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:57:14,346 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:57:14,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:57:14,352 INFO L85 PathProgramCache]: Analyzing trace with hash 775758574, now seen corresponding path program 1 times [2021-11-09 08:57:14,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:57:14,359 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527639430] [2021-11-09 08:57:14,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:57:14,360 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:57:14,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:57:14,561 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 08:57:14,562 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 08:57:14,562 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527639430] [2021-11-09 08:57:14,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527639430] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 08:57:14,563 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:57:14,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 08:57:14,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198778128] [2021-11-09 08:57:14,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 08:57:14,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 08:57:14,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 08:57:14,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:57:14,586 INFO L87 Difference]: Start difference. First operand has 33 states, 30 states have (on average 1.6) internal successors, (48), 32 states have internal predecessors, (48), 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 5 states, 5 states have (on average 2.6) internal successors, (13), 5 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 08:57:14,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:57:14,662 INFO L93 Difference]: Finished difference Result 45 states and 59 transitions. [2021-11-09 08:57:14,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 08:57:14,664 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 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 08:57:14,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:57:14,673 INFO L225 Difference]: With dead ends: 45 [2021-11-09 08:57:14,673 INFO L226 Difference]: Without dead ends: 34 [2021-11-09 08:57:14,676 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-09 08:57:14,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-11-09 08:57:14,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2021-11-09 08:57:14,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 30 states have (on average 1.3333333333333333) internal successors, (40), 31 states have internal predecessors, (40), 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 08:57:14,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2021-11-09 08:57:14,712 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 13 [2021-11-09 08:57:14,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:57:14,713 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2021-11-09 08:57:14,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 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 08:57:14,713 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2021-11-09 08:57:14,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-09 08:57:14,714 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:57:14,714 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:57:14,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-09 08:57:14,715 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:57:14,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:57:14,716 INFO L85 PathProgramCache]: Analyzing trace with hash 843294771, now seen corresponding path program 1 times [2021-11-09 08:57:14,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 08:57:14,717 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617321121] [2021-11-09 08:57:14,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:57:14,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 08:57:14,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:57:14,750 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 08:57:14,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 08:57:14,810 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 08:57:14,811 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-09 08:57:14,812 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-09 08:57:14,814 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-11-09 08:57:14,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-09 08:57:14,818 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-09 08:57:14,821 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-09 08:57:14,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 08:57:14 BoogieIcfgContainer [2021-11-09 08:57:14,851 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-09 08:57:14,852 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-09 08:57:14,852 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-09 08:57:14,853 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-09 08:57:14,853 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:57:14" (3/4) ... [2021-11-09 08:57:14,857 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-09 08:57:14,857 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-09 08:57:14,859 INFO L168 Benchmark]: Toolchain (without parser) took 1437.44 ms. Allocated memory is still 102.8 MB. Free memory was 61.2 MB in the beginning and 34.0 MB in the end (delta: 27.2 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2021-11-09 08:57:14,860 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 102.8 MB. Free memory was 77.6 MB in the beginning and 77.6 MB in the end (delta: 63.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 08:57:14,861 INFO L168 Benchmark]: CACSL2BoogieTranslator took 309.49 ms. Allocated memory is still 102.8 MB. Free memory was 61.0 MB in the beginning and 75.5 MB in the end (delta: -14.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-09 08:57:14,861 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.12 ms. Allocated memory is still 102.8 MB. Free memory was 75.5 MB in the beginning and 73.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-09 08:57:14,862 INFO L168 Benchmark]: Boogie Preprocessor took 24.53 ms. Allocated memory is still 102.8 MB. Free memory was 73.8 MB in the beginning and 72.8 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 08:57:14,863 INFO L168 Benchmark]: RCFGBuilder took 458.62 ms. Allocated memory is still 102.8 MB. Free memory was 72.7 MB in the beginning and 61.3 MB in the end (delta: 11.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-09 08:57:14,864 INFO L168 Benchmark]: TraceAbstraction took 594.77 ms. Allocated memory is still 102.8 MB. Free memory was 61.0 MB in the beginning and 34.3 MB in the end (delta: 26.7 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2021-11-09 08:57:14,864 INFO L168 Benchmark]: Witness Printer took 4.87 ms. Allocated memory is still 102.8 MB. Free memory was 34.3 MB in the beginning and 34.0 MB in the end (delta: 325.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 08:57:14,869 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 102.8 MB. Free memory was 77.6 MB in the beginning and 77.6 MB in the end (delta: 63.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 309.49 ms. Allocated memory is still 102.8 MB. Free memory was 61.0 MB in the beginning and 75.5 MB in the end (delta: -14.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.12 ms. Allocated memory is still 102.8 MB. Free memory was 75.5 MB in the beginning and 73.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.53 ms. Allocated memory is still 102.8 MB. Free memory was 73.8 MB in the beginning and 72.8 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 458.62 ms. Allocated memory is still 102.8 MB. Free memory was 72.7 MB in the beginning and 61.3 MB in the end (delta: 11.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 594.77 ms. Allocated memory is still 102.8 MB. Free memory was 61.0 MB in the beginning and 34.3 MB in the end (delta: 26.7 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. * Witness Printer took 4.87 ms. Allocated memory is still 102.8 MB. Free memory was 34.3 MB in the beginning and 34.0 MB in the end (delta: 325.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 58]: 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 45, overapproximation of to_real at line 41. Possible FailurePath: [L1] int __return_main; [L13] int __tmp_129_0; [L14] int __tmp_129_1; [L15] int __tmp_129_2; [L16] int __return_134; VAL [__return_134=0, __return_main=0, __tmp_129_0=0, __tmp_129_1=0, __tmp_129_2=0] [L19] double main__E0; [L20] double main__E1; [L21] double main__S; [L22] int main__i; [L23] main__E1 = 0 [L24] main__S = 0 [L25] main__i = 0 VAL [__return_134=0, __return_main=0, __tmp_129_0=0, __tmp_129_1=0, __tmp_129_2=0] [L26] COND TRUE main__i <= 1000000 [L28] main__E0 = __VERIFIER_nondet_double() [L29] int main____CPAchecker_TMP_0; VAL [__return_134=0, __return_main=0, __tmp_129_0=0, __tmp_129_1=0, __tmp_129_2=0] [L30] COND TRUE main__E0 >= -1.0 VAL [__return_134=0, __return_main=0, __tmp_129_0=0, __tmp_129_1=0, __tmp_129_2=0] [L32] COND TRUE main__E0 <= 1.0 [L34] main____CPAchecker_TMP_0 = 1 VAL [__return_134=0, __return_main=0, __tmp_129_0=0, __tmp_129_1=0, __tmp_129_2=0] [L35] COND TRUE main____CPAchecker_TMP_0 != 0 [L37] int main____CPAchecker_TMP_1; [L38] main____CPAchecker_TMP_1 = __VERIFIER_nondet_int() [L39] COND TRUE !(main____CPAchecker_TMP_1 == 0) [L41] main__S = 0 VAL [__return_134=0, __return_main=0, __tmp_129_0=0, __tmp_129_1=0, __tmp_129_2=0] [L43] main__E1 = main__E0 [L44] int main____CPAchecker_TMP_2; VAL [__return_134=0, __return_main=0, __tmp_129_0=0, __tmp_129_1=0, __tmp_129_2=0] [L45] COND FALSE !(main__S >= -10000.0) VAL [__return_134=0, __return_main=0, __tmp_129_0=0, __tmp_129_1=0, __tmp_129_2=0] [L162] main____CPAchecker_TMP_2 = 0 VAL [__return_134=0, __return_main=0, __tmp_129_0=0, __tmp_129_1=0, __tmp_129_2=0] [L52] int __tmp_1; [L53] __tmp_1 = main____CPAchecker_TMP_2 [L54] int __VERIFIER_assert__cond; [L55] __VERIFIER_assert__cond = __tmp_1 VAL [__return_134=0, __return_main=0, __tmp_129_0=0, __tmp_129_1=0, __tmp_129_2=0] [L56] COND TRUE __VERIFIER_assert__cond == 0 VAL [__return_134=0, __return_main=0, __tmp_129_0=0, __tmp_129_1=0, __tmp_129_2=0] [L58] reach_error() VAL [__return_134=0, __return_main=0, __tmp_129_0=0, __tmp_129_1=0, __tmp_129_2=0] - UnprovableResult [Line: 104]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 44 SDtfs, 44 SDslu, 87 SDs, 0 SdLazy, 17 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=0, InterpolantAutomatonStates: 7, 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, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 20 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 08:57:14,927 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9defc233-3298-4796-9255-135cc57ae9d2/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_9defc233-3298-4796-9255-135cc57ae9d2/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9defc233-3298-4796-9255-135cc57ae9d2/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_9defc233-3298-4796-9255-135cc57ae9d2/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9defc233-3298-4796-9255-135cc57ae9d2/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/filter1.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9defc233-3298-4796-9255-135cc57ae9d2/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_9defc233-3298-4796-9255-135cc57ae9d2/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 27e2c506f8c4790ab21ed41c19bd1ea2839907b43d1ff7cacbbc276ad919ab4e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 08:57:17,464 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 08:57:17,468 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 08:57:17,521 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 08:57:17,522 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 08:57:17,527 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 08:57:17,529 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 08:57:17,536 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 08:57:17,539 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 08:57:17,545 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 08:57:17,547 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 08:57:17,549 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 08:57:17,550 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 08:57:17,553 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 08:57:17,555 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 08:57:17,559 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 08:57:17,562 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 08:57:17,563 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 08:57:17,566 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 08:57:17,574 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 08:57:17,576 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 08:57:17,578 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 08:57:17,580 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 08:57:17,583 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 08:57:17,592 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 08:57:17,593 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 08:57:17,593 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 08:57:17,595 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 08:57:17,596 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 08:57:17,598 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 08:57:17,598 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 08:57:17,599 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 08:57:17,602 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 08:57:17,603 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 08:57:17,605 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 08:57:17,605 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 08:57:17,616 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 08:57:17,616 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 08:57:17,616 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 08:57:17,619 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 08:57:17,620 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 08:57:17,625 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9defc233-3298-4796-9255-135cc57ae9d2/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-11-09 08:57:17,671 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 08:57:17,671 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 08:57:17,672 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 08:57:17,673 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 08:57:17,675 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 08:57:17,675 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 08:57:17,676 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 08:57:17,676 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 08:57:17,676 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 08:57:17,677 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 08:57:17,678 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 08:57:17,679 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 08:57:17,679 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 08:57:17,679 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 08:57:17,680 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-09 08:57:17,680 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-09 08:57:17,680 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 08:57:17,681 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 08:57:17,681 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 08:57:17,681 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 08:57:17,682 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 08:57:17,682 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 08:57:17,682 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 08:57:17,683 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 08:57:17,683 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 08:57:17,683 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 08:57:17,684 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 08:57:17,684 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-09 08:57:17,685 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-09 08:57:17,685 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 08:57:17,685 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 08:57:17,686 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 08:57:17,686 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 08:57:17,687 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-09 08:57:17,687 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_9defc233-3298-4796-9255-135cc57ae9d2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9defc233-3298-4796-9255-135cc57ae9d2/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 27e2c506f8c4790ab21ed41c19bd1ea2839907b43d1ff7cacbbc276ad919ab4e [2021-11-09 08:57:18,127 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 08:57:18,158 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 08:57:18,161 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 08:57:18,164 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 08:57:18,165 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 08:57:18,166 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9defc233-3298-4796-9255-135cc57ae9d2/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/float-benchs/filter1.c.v+lhb-reducer.c [2021-11-09 08:57:18,247 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9defc233-3298-4796-9255-135cc57ae9d2/bin/uautomizer-IVEQpCNsaX/data/17bd3372f/1703fd42077849bdb8360a209af2bd74/FLAG26d6f2024 [2021-11-09 08:57:18,802 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 08:57:18,803 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9defc233-3298-4796-9255-135cc57ae9d2/sv-benchmarks/c/float-benchs/filter1.c.v+lhb-reducer.c [2021-11-09 08:57:18,816 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9defc233-3298-4796-9255-135cc57ae9d2/bin/uautomizer-IVEQpCNsaX/data/17bd3372f/1703fd42077849bdb8360a209af2bd74/FLAG26d6f2024 [2021-11-09 08:57:19,173 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9defc233-3298-4796-9255-135cc57ae9d2/bin/uautomizer-IVEQpCNsaX/data/17bd3372f/1703fd42077849bdb8360a209af2bd74 [2021-11-09 08:57:19,176 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 08:57:19,177 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 08:57:19,179 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 08:57:19,179 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 08:57:19,183 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 08:57:19,184 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:57:19" (1/1) ... [2021-11-09 08:57:19,186 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f457618 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:57:19, skipping insertion in model container [2021-11-09 08:57:19,186 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:57:19" (1/1) ... [2021-11-09 08:57:19,198 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 08:57:19,231 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 08:57:19,394 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_9defc233-3298-4796-9255-135cc57ae9d2/sv-benchmarks/c/float-benchs/filter1.c.v+lhb-reducer.c[1355,1368] [2021-11-09 08:57:19,404 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_9defc233-3298-4796-9255-135cc57ae9d2/sv-benchmarks/c/float-benchs/filter1.c.v+lhb-reducer.c[2394,2407] [2021-11-09 08:57:19,410 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:57:19,424 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 08:57:19,462 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_9defc233-3298-4796-9255-135cc57ae9d2/sv-benchmarks/c/float-benchs/filter1.c.v+lhb-reducer.c[1355,1368] [2021-11-09 08:57:19,498 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_9defc233-3298-4796-9255-135cc57ae9d2/sv-benchmarks/c/float-benchs/filter1.c.v+lhb-reducer.c[2394,2407] [2021-11-09 08:57:19,503 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:57:19,520 INFO L208 MainTranslator]: Completed translation [2021-11-09 08:57:19,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:57:19 WrapperNode [2021-11-09 08:57:19,521 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 08:57:19,522 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 08:57:19,523 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 08:57:19,527 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 08:57:19,534 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:57:19" (1/1) ... [2021-11-09 08:57:19,543 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:57:19" (1/1) ... [2021-11-09 08:57:19,567 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 08:57:19,568 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 08:57:19,568 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 08:57:19,569 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 08:57:19,577 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:57:19" (1/1) ... [2021-11-09 08:57:19,578 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:57:19" (1/1) ... [2021-11-09 08:57:19,582 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:57:19" (1/1) ... [2021-11-09 08:57:19,582 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:57:19" (1/1) ... [2021-11-09 08:57:19,591 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:57:19" (1/1) ... [2021-11-09 08:57:19,594 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:57:19" (1/1) ... [2021-11-09 08:57:19,597 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:57:19" (1/1) ... [2021-11-09 08:57:19,600 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 08:57:19,601 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 08:57:19,602 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 08:57:19,602 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 08:57:19,603 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:57:19" (1/1) ... [2021-11-09 08:57:19,611 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 08:57:19,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9defc233-3298-4796-9255-135cc57ae9d2/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:57:19,644 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9defc233-3298-4796-9255-135cc57ae9d2/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 08:57:19,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9defc233-3298-4796-9255-135cc57ae9d2/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 08:57:19,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-09 08:57:19,694 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 08:57:19,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 08:57:19,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 08:57:22,748 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 08:57:22,748 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-09 08:57:22,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:57:22 BoogieIcfgContainer [2021-11-09 08:57:22,751 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 08:57:22,753 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 08:57:22,753 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 08:57:22,756 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 08:57:22,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 08:57:19" (1/3) ... [2021-11-09 08:57:22,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c9209c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 08:57:22, skipping insertion in model container [2021-11-09 08:57:22,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:57:19" (2/3) ... [2021-11-09 08:57:22,758 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c9209c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 08:57:22, skipping insertion in model container [2021-11-09 08:57:22,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:57:22" (3/3) ... [2021-11-09 08:57:22,759 INFO L111 eAbstractionObserver]: Analyzing ICFG filter1.c.v+lhb-reducer.c [2021-11-09 08:57:22,765 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 08:57:22,765 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-09 08:57:22,815 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 08:57:22,821 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 08:57:22,822 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-09 08:57:22,836 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 30 states have (on average 1.6) internal successors, (48), 32 states have internal predecessors, (48), 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 08:57:22,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-09 08:57:22,845 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:57:22,846 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:57:22,847 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:57:22,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:57:22,868 INFO L85 PathProgramCache]: Analyzing trace with hash 775758574, now seen corresponding path program 1 times [2021-11-09 08:57:22,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:57:22,880 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1607017106] [2021-11-09 08:57:22,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:57:22,882 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:57:22,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9defc233-3298-4796-9255-135cc57ae9d2/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:57:22,885 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9defc233-3298-4796-9255-135cc57ae9d2/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:57:22,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9defc233-3298-4796-9255-135cc57ae9d2/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-09 08:57:22,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:57:23,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-09 08:57:23,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:57:23,181 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 08:57:23,181 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:57:23,314 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 08:57:23,315 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:57:23,315 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1607017106] [2021-11-09 08:57:23,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1607017106] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:57:23,316 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:57:23,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-09 08:57:23,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288408815] [2021-11-09 08:57:23,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 08:57:23,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:57:23,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 08:57:23,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-09 08:57:23,345 INFO L87 Difference]: Start difference. First operand has 33 states, 30 states have (on average 1.6) internal successors, (48), 32 states have internal predecessors, (48), 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 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 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 08:57:23,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:57:23,505 INFO L93 Difference]: Finished difference Result 62 states and 83 transitions. [2021-11-09 08:57:23,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 08:57:23,508 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 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) Word has length 13 [2021-11-09 08:57:23,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:57:23,518 INFO L225 Difference]: With dead ends: 62 [2021-11-09 08:57:23,518 INFO L226 Difference]: Without dead ends: 48 [2021-11-09 08:57:23,522 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-09 08:57:23,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-11-09 08:57:23,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 32. [2021-11-09 08:57:23,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 30 states have (on average 1.3333333333333333) internal successors, (40), 31 states have internal predecessors, (40), 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 08:57:23,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2021-11-09 08:57:23,569 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 13 [2021-11-09 08:57:23,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:57:23,570 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2021-11-09 08:57:23,570 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 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 08:57:23,570 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2021-11-09 08:57:23,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-09 08:57:23,572 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:57:23,573 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:57:23,598 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9defc233-3298-4796-9255-135cc57ae9d2/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-09 08:57:23,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9defc233-3298-4796-9255-135cc57ae9d2/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:57:23,802 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:57:23,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:57:23,803 INFO L85 PathProgramCache]: Analyzing trace with hash 843294771, now seen corresponding path program 1 times [2021-11-09 08:57:23,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:57:23,806 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [832380855] [2021-11-09 08:57:23,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:57:23,807 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:57:23,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9defc233-3298-4796-9255-135cc57ae9d2/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:57:23,809 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9defc233-3298-4796-9255-135cc57ae9d2/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:57:23,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9defc233-3298-4796-9255-135cc57ae9d2/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-09 08:57:23,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:57:23,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-09 08:57:23,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:57:24,003 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 08:57:24,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:57:24,117 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 08:57:24,117 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:57:24,118 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [832380855] [2021-11-09 08:57:24,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [832380855] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:57:24,118 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:57:24,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-09 08:57:24,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789940092] [2021-11-09 08:57:24,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 08:57:24,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:57:24,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 08:57:24,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:57:24,121 INFO L87 Difference]: Start difference. First operand 32 states and 40 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 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 08:57:28,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:57:28,157 INFO L93 Difference]: Finished difference Result 88 states and 111 transitions. [2021-11-09 08:57:28,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 08:57:28,158 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 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) Word has length 13 [2021-11-09 08:57:28,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:57:28,160 INFO L225 Difference]: With dead ends: 88 [2021-11-09 08:57:28,160 INFO L226 Difference]: Without dead ends: 68 [2021-11-09 08:57:28,161 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:57:28,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-11-09 08:57:28,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 38. [2021-11-09 08:57:28,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 36 states have (on average 1.2777777777777777) internal successors, (46), 37 states have internal predecessors, (46), 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 08:57:28,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2021-11-09 08:57:28,171 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 13 [2021-11-09 08:57:28,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:57:28,171 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2021-11-09 08:57:28,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 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 08:57:28,175 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2021-11-09 08:57:28,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-09 08:57:28,176 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:57:28,176 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:57:28,188 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9defc233-3298-4796-9255-135cc57ae9d2/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-09 08:57:28,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9defc233-3298-4796-9255-135cc57ae9d2/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:57:28,388 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:57:28,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:57:28,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1349105153, now seen corresponding path program 1 times [2021-11-09 08:57:28,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:57:28,389 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [643351489] [2021-11-09 08:57:28,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:57:28,390 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:57:28,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9defc233-3298-4796-9255-135cc57ae9d2/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:57:28,393 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9defc233-3298-4796-9255-135cc57ae9d2/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:57:28,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9defc233-3298-4796-9255-135cc57ae9d2/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-09 08:57:28,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:57:28,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-09 08:57:28,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:57:29,597 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 08:57:29,597 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:57:35,798 WARN L838 $PredicateComparison]: unable to prove that (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) c_ULTIMATE.start_main_~main__S~0) c_ULTIMATE.start_main_~main__E0~0) c_ULTIMATE.start_main_~main__E1~0) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) is different from false [2021-11-09 08:57:37,845 WARN L860 $PredicateComparison]: unable to prove that (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) c_ULTIMATE.start_main_~main__S~0) c_ULTIMATE.start_main_~main__E0~0) c_ULTIMATE.start_main_~main__E1~0) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) is different from true [2021-11-09 08:57:52,219 WARN L838 $PredicateComparison]: unable to prove that (or (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) c_ULTIMATE.start_main_~main__S~0) c_ULTIMATE.start_main_~main__E0~0) c_ULTIMATE.start_main_~main__E1~0) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) (not (fp.leq c_ULTIMATE.start_main_~main__E0~0 ((_ to_fp 11 53) c_currentRoundingMode 1.0)))) is different from false [2021-11-09 08:57:54,263 WARN L860 $PredicateComparison]: unable to prove that (or (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) c_ULTIMATE.start_main_~main__S~0) c_ULTIMATE.start_main_~main__E0~0) c_ULTIMATE.start_main_~main__E1~0) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) (not (fp.leq c_ULTIMATE.start_main_~main__E0~0 ((_ to_fp 11 53) c_currentRoundingMode 1.0)))) is different from true [2021-11-09 08:58:08,765 WARN L860 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~main__E0~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (or (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) c_ULTIMATE.start_main_~main__S~0) ULTIMATE.start_main_~main__E0~0) c_ULTIMATE.start_main_~main__E1~0) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) (not (fp.leq ULTIMATE.start_main_~main__E0~0 .cse0)) (not (fp.geq ULTIMATE.start_main_~main__E0~0 (fp.neg .cse0)))))) is different from true [2021-11-09 08:58:21,266 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 08:58:21,267 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:58:21,267 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [643351489] [2021-11-09 08:58:21,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [643351489] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:58:21,267 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:58:21,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-11-09 08:58:21,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136536148] [2021-11-09 08:58:21,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 08:58:21,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:58:21,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 08:58:21,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=30, Unknown=5, NotChecked=42, Total=110 [2021-11-09 08:58:21,270 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 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 08:58:23,726 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (and (forall ((ULTIMATE.start_main_~main__E0~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (or (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) c_ULTIMATE.start_main_~main__S~0) ULTIMATE.start_main_~main__E0~0) c_ULTIMATE.start_main_~main__E1~0) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) (not (fp.leq ULTIMATE.start_main_~main__E0~0 .cse0)) (not (fp.geq ULTIMATE.start_main_~main__E0~0 (fp.neg .cse0)))))) (= .cse1 c_ULTIMATE.start_main_~main__E1~0) (= .cse1 c_ULTIMATE.start_main_~main__S~0) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-11-09 08:58:25,782 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (fp.geq c_ULTIMATE.start_main_~main__E0~0 (fp.neg .cse0)) (= .cse1 c_ULTIMATE.start_main_~main__E1~0) (= .cse1 c_ULTIMATE.start_main_~main__S~0) (or (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) c_ULTIMATE.start_main_~main__S~0) c_ULTIMATE.start_main_~main__E0~0) c_ULTIMATE.start_main_~main__E1~0) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) (not (fp.leq c_ULTIMATE.start_main_~main__E0~0 .cse0))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-11-09 08:58:27,851 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0)) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (and (fp.leq c_ULTIMATE.start_main_~main__E0~0 .cse0) (fp.geq c_ULTIMATE.start_main_~main__E0~0 (fp.neg .cse0)) (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) c_ULTIMATE.start_main_~main__S~0) c_ULTIMATE.start_main_~main__E0~0) c_ULTIMATE.start_main_~main__E1~0) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) (= .cse1 c_ULTIMATE.start_main_~main__E1~0) (= .cse1 c_ULTIMATE.start_main_~main__S~0) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-11-09 08:58:31,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:58:31,965 INFO L93 Difference]: Finished difference Result 84 states and 103 transitions. [2021-11-09 08:58:31,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-09 08:58:31,966 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 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 08:58:31,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:58:31,967 INFO L225 Difference]: With dead ends: 84 [2021-11-09 08:58:31,967 INFO L226 Difference]: Without dead ends: 61 [2021-11-09 08:58:31,968 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 16.7s TimeCoverageRelationStatistics Valid=39, Invalid=33, Unknown=8, NotChecked=102, Total=182 [2021-11-09 08:58:31,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-11-09 08:58:31,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 30. [2021-11-09 08:58:31,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 29 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:58:31,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2021-11-09 08:58:31,977 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 13 [2021-11-09 08:58:31,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:58:31,977 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2021-11-09 08:58:31,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 11 states have internal predecessors, (22), 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 08:58:31,978 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2021-11-09 08:58:31,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-09 08:58:31,979 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:58:31,979 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:58:31,994 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9defc233-3298-4796-9255-135cc57ae9d2/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-09 08:58:32,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9defc233-3298-4796-9255-135cc57ae9d2/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:58:32,180 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:58:32,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:58:32,181 INFO L85 PathProgramCache]: Analyzing trace with hash -151896705, now seen corresponding path program 1 times [2021-11-09 08:58:32,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:58:32,182 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [495457495] [2021-11-09 08:58:32,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:58:32,182 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:58:32,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9defc233-3298-4796-9255-135cc57ae9d2/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:58:32,183 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9defc233-3298-4796-9255-135cc57ae9d2/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:58:32,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9defc233-3298-4796-9255-135cc57ae9d2/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-09 08:58:32,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:58:32,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-09 08:58:32,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:58:32,363 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 08:58:32,363 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:58:32,438 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 08:58:32,439 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:58:32,439 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [495457495] [2021-11-09 08:58:32,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [495457495] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:58:32,439 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:58:32,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-09 08:58:32,440 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011036154] [2021-11-09 08:58:32,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:58:32,440 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:58:32,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:58:32,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:58:32,441 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 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 08:58:32,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:58:32,686 INFO L93 Difference]: Finished difference Result 49 states and 60 transitions. [2021-11-09 08:58:32,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:58:32,687 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 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 24 [2021-11-09 08:58:32,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:58:32,688 INFO L225 Difference]: With dead ends: 49 [2021-11-09 08:58:32,688 INFO L226 Difference]: Without dead ends: 29 [2021-11-09 08:58:32,688 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:58:32,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-11-09 08:58:32,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-11-09 08:58:32,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 28 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 08:58:32,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2021-11-09 08:58:32,694 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 24 [2021-11-09 08:58:32,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:58:32,695 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2021-11-09 08:58:32,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 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 08:58:32,695 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2021-11-09 08:58:32,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-09 08:58:32,696 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:58:32,696 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:58:32,712 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9defc233-3298-4796-9255-135cc57ae9d2/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-09 08:58:32,896 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9defc233-3298-4796-9255-135cc57ae9d2/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:58:32,897 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:58:32,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:58:32,897 INFO L85 PathProgramCache]: Analyzing trace with hash -327957724, now seen corresponding path program 1 times [2021-11-09 08:58:32,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:58:32,898 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1352802618] [2021-11-09 08:58:32,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:58:32,898 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:58:32,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9defc233-3298-4796-9255-135cc57ae9d2/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:58:32,899 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9defc233-3298-4796-9255-135cc57ae9d2/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:58:32,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9defc233-3298-4796-9255-135cc57ae9d2/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-09 08:58:33,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:58:33,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-09 08:58:33,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:58:33,140 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 08:58:33,141 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:58:33,251 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 08:58:33,251 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:58:33,251 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1352802618] [2021-11-09 08:58:33,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1352802618] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:58:33,252 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:58:33,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-09 08:58:33,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28505043] [2021-11-09 08:58:33,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 08:58:33,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:58:33,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 08:58:33,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-09 08:58:33,254 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 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 08:58:33,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:58:33,421 INFO L93 Difference]: Finished difference Result 63 states and 73 transitions. [2021-11-09 08:58:33,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 08:58:33,422 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 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 24 [2021-11-09 08:58:33,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:58:33,423 INFO L225 Difference]: With dead ends: 63 [2021-11-09 08:58:33,423 INFO L226 Difference]: Without dead ends: 61 [2021-11-09 08:58:33,424 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-09 08:58:33,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-11-09 08:58:33,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 31. [2021-11-09 08:58:33,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 30 states have internal predecessors, (35), 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 08:58:33,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2021-11-09 08:58:33,436 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 24 [2021-11-09 08:58:33,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:58:33,436 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2021-11-09 08:58:33,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 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 08:58:33,437 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2021-11-09 08:58:33,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-09 08:58:33,437 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:58:33,437 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:58:33,454 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9defc233-3298-4796-9255-135cc57ae9d2/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-09 08:58:33,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9defc233-3298-4796-9255-135cc57ae9d2/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:58:33,654 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 08:58:33,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:58:33,654 INFO L85 PathProgramCache]: Analyzing trace with hash 401808482, now seen corresponding path program 1 times [2021-11-09 08:58:33,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:58:33,656 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [48302593] [2021-11-09 08:58:33,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:58:33,659 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:58:33,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9defc233-3298-4796-9255-135cc57ae9d2/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:58:33,662 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9defc233-3298-4796-9255-135cc57ae9d2/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:58:33,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9defc233-3298-4796-9255-135cc57ae9d2/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-09 08:58:34,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:58:34,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-09 08:58:34,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:59:13,439 WARN L838 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~main__E1~0 (_ FloatingPoint 11 53)) (ULTIMATE.start_main_~main__E0~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (and (not (fp.geq (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 999.0 1000.0)) ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) ULTIMATE.start_main_~main__E0~0) ULTIMATE.start_main_~main__E1~0) (fp.neg ((_ to_fp 11 53) roundNearestTiesToEven 10000.0)))) (fp.leq ULTIMATE.start_main_~main__E1~0 .cse0) (fp.geq ULTIMATE.start_main_~main__E0~0 (fp.neg .cse0))))) is different from false [2021-11-09 08:59:15,447 WARN L860 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~main__E1~0 (_ FloatingPoint 11 53)) (ULTIMATE.start_main_~main__E0~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (and (not (fp.geq (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 999.0 1000.0)) ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32))) ULTIMATE.start_main_~main__E0~0) ULTIMATE.start_main_~main__E1~0) (fp.neg ((_ to_fp 11 53) roundNearestTiesToEven 10000.0)))) (fp.leq ULTIMATE.start_main_~main__E1~0 .cse0) (fp.geq ULTIMATE.start_main_~main__E0~0 (fp.neg .cse0))))) is different from true [2021-11-09 09:00:08,004 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 09:00:08,004 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:00:16,213 WARN L838 $PredicateComparison]: unable to prove that (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) c_ULTIMATE.start_main_~main__S~0) c_ULTIMATE.start_main_~main__E0~0) c_ULTIMATE.start_main_~main__E1~0) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) is different from false [2021-11-09 09:00:18,261 WARN L860 $PredicateComparison]: unable to prove that (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) c_ULTIMATE.start_main_~main__S~0) c_ULTIMATE.start_main_~main__E0~0) c_ULTIMATE.start_main_~main__E1~0) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) is different from true [2021-11-09 09:00:32,688 WARN L838 $PredicateComparison]: unable to prove that (or (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) c_ULTIMATE.start_main_~main__S~0) c_ULTIMATE.start_main_~main__E0~0) c_ULTIMATE.start_main_~main__E1~0) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) (not (fp.leq c_ULTIMATE.start_main_~main__E0~0 ((_ to_fp 11 53) c_currentRoundingMode 1.0)))) is different from false [2021-11-09 09:00:34,738 WARN L860 $PredicateComparison]: unable to prove that (or (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) c_ULTIMATE.start_main_~main__S~0) c_ULTIMATE.start_main_~main__E0~0) c_ULTIMATE.start_main_~main__E1~0) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) (not (fp.leq c_ULTIMATE.start_main_~main__E0~0 ((_ to_fp 11 53) c_currentRoundingMode 1.0)))) is different from true [2021-11-09 09:00:49,198 WARN L860 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~main__E0~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (or (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) c_ULTIMATE.start_main_~main__S~0) ULTIMATE.start_main_~main__E0~0) c_ULTIMATE.start_main_~main__E1~0) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) (not (fp.leq ULTIMATE.start_main_~main__E0~0 .cse0)) (not (fp.geq ULTIMATE.start_main_~main__E0~0 (fp.neg .cse0)))))) is different from true [2021-11-09 09:02:17,255 WARN L860 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~main__E0~0_21 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (or (not (fp.geq v_ULTIMATE.start_main_~main__E0~0_21 (fp.neg .cse0))) (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) c_ULTIMATE.start_main_~main__S~0) v_ULTIMATE.start_main_~main__E0~0_21) c_ULTIMATE.start_main_~main__E0~0) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) (not (fp.leq v_ULTIMATE.start_main_~main__E0~0_21 .cse0))))) is different from true [2021-11-09 09:02:38,359 WARN L860 $PredicateComparison]: unable to prove that (or (forall ((v_ULTIMATE.start_main_~main__E0~0_21 (_ FloatingPoint 11 53))) (or (not (fp.geq v_ULTIMATE.start_main_~main__E0~0_21 (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 1.0)))) (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) v_ULTIMATE.start_main_~main__E0~0_21) c_ULTIMATE.start_main_~main__E0~0) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0))))) (not (fp.leq c_ULTIMATE.start_main_~main__E0~0 ((_ to_fp 11 53) c_currentRoundingMode 1.0)))) is different from true [2021-11-09 09:02:56,908 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~main__E0~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (or (forall ((v_ULTIMATE.start_main_~main__E0~0_21 (_ FloatingPoint 11 53))) (or (not (fp.geq v_ULTIMATE.start_main_~main__E0~0_21 (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 1.0)))) (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) v_ULTIMATE.start_main_~main__E0~0_21) ULTIMATE.start_main_~main__E0~0) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0))))) (not (fp.leq ULTIMATE.start_main_~main__E0~0 .cse0)) (not (fp.geq ULTIMATE.start_main_~main__E0~0 (fp.neg .cse0)))))) is different from false [2021-11-09 09:02:58,921 WARN L860 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~main__E0~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (or (forall ((v_ULTIMATE.start_main_~main__E0~0_21 (_ FloatingPoint 11 53))) (or (not (fp.geq v_ULTIMATE.start_main_~main__E0~0_21 (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 1.0)))) (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) v_ULTIMATE.start_main_~main__E0~0_21) ULTIMATE.start_main_~main__E0~0) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0))))) (not (fp.leq ULTIMATE.start_main_~main__E0~0 .cse0)) (not (fp.geq ULTIMATE.start_main_~main__E0~0 (fp.neg .cse0)))))) is different from true [2021-11-09 09:03:30,618 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 09:03:30,618 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:03:30,619 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [48302593] [2021-11-09 09:03:30,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [48302593] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:03:30,619 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:03:30,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 18 [2021-11-09 09:03:30,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66070814] [2021-11-09 09:03:30,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-09 09:03:30,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:03:30,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-09 09:03:30,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=82, Unknown=18, NotChecked=182, Total=342 [2021-11-09 09:03:30,621 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 18 states have internal predecessors, (48), 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 09:04:10,621 WARN L207 SmtUtils]: Spent 9.77 s on a formula simplification that was a NOOP. DAG size: 30 [2021-11-09 09:04:46,171 WARN L207 SmtUtils]: Spent 8.75 s on a formula simplification that was a NOOP. DAG size: 28 [2021-11-09 09:05:07,148 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (forall ((v_ULTIMATE.start_main_~main__E0~0_21 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (or (not (fp.geq v_ULTIMATE.start_main_~main__E0~0_21 (fp.neg .cse0))) (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) c_ULTIMATE.start_main_~main__S~0) v_ULTIMATE.start_main_~main__E0~0_21) c_ULTIMATE.start_main_~main__E0~0) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) (not (fp.leq v_ULTIMATE.start_main_~main__E0~0_21 .cse0))))) (fp.leq c_ULTIMATE.start_main_~main__E0~0 .cse1) (forall ((v_ULTIMATE.start_main_~main__E0~0_21 (_ FloatingPoint 11 53))) (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (or (not (fp.geq v_ULTIMATE.start_main_~main__E0~0_21 (fp.neg .cse2))) (not (fp.leq v_ULTIMATE.start_main_~main__E0~0_21 .cse2)) (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) v_ULTIMATE.start_main_~main__E0~0_21) c_ULTIMATE.start_main_~main__E0~0) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0)))))) (fp.geq c_ULTIMATE.start_main_~main__E0~0 (fp.neg .cse1)) (= ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)) c_ULTIMATE.start_main_~main__S~0) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-11-09 09:05:11,672 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (forall ((ULTIMATE.start_main_~main__E0~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (or (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) c_ULTIMATE.start_main_~main__S~0) ULTIMATE.start_main_~main__E0~0) c_ULTIMATE.start_main_~main__E1~0) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) (not (fp.leq ULTIMATE.start_main_~main__E0~0 .cse0)) (not (fp.geq ULTIMATE.start_main_~main__E0~0 (fp.neg .cse0)))))) (fp.leq c_ULTIMATE.start_main_~main__E1~0 .cse1) (fp.geq c_ULTIMATE.start_main_~main__E1~0 (fp.neg .cse1)) (= ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)) c_ULTIMATE.start_main_~main__S~0) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2021-11-09 09:05:16,007 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse1 (fp.neg .cse0))) (and (fp.leq c_ULTIMATE.start_main_~main__E1~0 .cse0) (fp.geq c_ULTIMATE.start_main_~main__E1~0 .cse1) (fp.geq c_ULTIMATE.start_main_~main__E0~0 .cse1) (= ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)) c_ULTIMATE.start_main_~main__S~0) (or (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) c_ULTIMATE.start_main_~main__S~0) c_ULTIMATE.start_main_~main__E0~0) c_ULTIMATE.start_main_~main__E1~0) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) (not (fp.leq c_ULTIMATE.start_main_~main__E0~0 .cse0))) (= c_currentRoundingMode roundNearestTiesToEven)))) is different from true [2021-11-09 09:05:18,650 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse1 (fp.neg .cse0))) (and (fp.leq c_ULTIMATE.start_main_~main__E1~0 .cse0) (fp.leq c_ULTIMATE.start_main_~main__E0~0 .cse0) (fp.geq c_ULTIMATE.start_main_~main__E1~0 .cse1) (fp.geq c_ULTIMATE.start_main_~main__E0~0 .cse1) (fp.geq (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) c_ULTIMATE.start_main_~main__S~0) c_ULTIMATE.start_main_~main__E0~0) c_ULTIMATE.start_main_~main__E1~0) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) (= ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)) c_ULTIMATE.start_main_~main__S~0) (= c_currentRoundingMode roundNearestTiesToEven)))) is different from true [2021-11-09 09:06:03,210 WARN L207 SmtUtils]: Spent 5.06 s on a formula simplification that was a NOOP. DAG size: 28 [2021-11-09 09:06:25,707 WARN L207 SmtUtils]: Spent 16.20 s on a formula simplification that was a NOOP. DAG size: 38 [2021-11-09 09:06:42,457 WARN L207 SmtUtils]: Spent 5.89 s on a formula simplification that was a NOOP. DAG size: 30 [2021-11-09 09:07:12,259 WARN L207 SmtUtils]: Spent 8.96 s on a formula simplification that was a NOOP. DAG size: 33 [2021-11-09 09:07:21,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:07:21,649 INFO L93 Difference]: Finished difference Result 105 states and 120 transitions. [2021-11-09 09:07:21,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-09 09:07:21,660 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 18 states have internal predecessors, (48), 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 24 [2021-11-09 09:07:21,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:07:21,661 INFO L225 Difference]: With dead ends: 105 [2021-11-09 09:07:21,662 INFO L226 Difference]: Without dead ends: 85 [2021-11-09 09:07:21,662 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 11 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 200.6s TimeCoverageRelationStatistics Valid=149, Invalid=261, Unknown=54, NotChecked=528, Total=992 [2021-11-09 09:07:21,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-11-09 09:07:21,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 67. [2021-11-09 09:07:21,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.1515151515151516) internal successors, (76), 66 states have internal predecessors, (76), 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 09:07:21,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 76 transitions. [2021-11-09 09:07:21,675 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 76 transitions. Word has length 24 [2021-11-09 09:07:21,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:07:21,676 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 76 transitions. [2021-11-09 09:07:21,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 18 states have internal predecessors, (48), 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 09:07:21,676 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 76 transitions. [2021-11-09 09:07:21,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-09 09:07:21,677 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:07:21,678 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:07:21,692 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9defc233-3298-4796-9255-135cc57ae9d2/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-09 09:07:21,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9defc233-3298-4796-9255-135cc57ae9d2/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:07:21,878 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:07:21,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:07:21,879 INFO L85 PathProgramCache]: Analyzing trace with hash -60423724, now seen corresponding path program 1 times [2021-11-09 09:07:21,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:07:21,880 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1757208358] [2021-11-09 09:07:21,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:07:21,880 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:07:21,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9defc233-3298-4796-9255-135cc57ae9d2/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:07:21,881 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9defc233-3298-4796-9255-135cc57ae9d2/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:07:21,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9defc233-3298-4796-9255-135cc57ae9d2/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-09 09:07:23,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:07:23,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-09 09:07:23,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:08:43,148 WARN L207 SmtUtils]: Spent 10.27 s on a formula simplification that was a NOOP. DAG size: 27 [2021-11-09 09:10:10,556 WARN L838 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~main__E1~0 (_ FloatingPoint 11 53)) (ULTIMATE.start_main_~main__E0~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse3 (fp.neg .cse0))) (and (fp.leq ULTIMATE.start_main_~main__E0~0 .cse0) (not (fp.geq (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 999.0 1000.0)))) (fp.mul roundNearestTiesToEven .cse1 (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse1 .cse2) ULTIMATE.start_main_~main__E1~0) .cse2)))) ULTIMATE.start_main_~main__E0~0) ULTIMATE.start_main_~main__E1~0) (fp.neg ((_ to_fp 11 53) roundNearestTiesToEven 10000.0)))) (fp.leq ULTIMATE.start_main_~main__E1~0 .cse0) (fp.geq ULTIMATE.start_main_~main__E1~0 .cse3) (fp.geq ULTIMATE.start_main_~main__E0~0 .cse3))))) is different from false [2021-11-09 09:10:12,591 WARN L860 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~main__E1~0 (_ FloatingPoint 11 53)) (ULTIMATE.start_main_~main__E0~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse3 (fp.neg .cse0))) (and (fp.leq ULTIMATE.start_main_~main__E0~0 .cse0) (not (fp.geq (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 999.0 1000.0)))) (fp.mul roundNearestTiesToEven .cse1 (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.sub roundNearestTiesToEven (fp.add roundNearestTiesToEven (fp.mul roundNearestTiesToEven .cse1 .cse2) ULTIMATE.start_main_~main__E1~0) .cse2)))) ULTIMATE.start_main_~main__E0~0) ULTIMATE.start_main_~main__E1~0) (fp.neg ((_ to_fp 11 53) roundNearestTiesToEven 10000.0)))) (fp.leq ULTIMATE.start_main_~main__E1~0 .cse0) (fp.geq ULTIMATE.start_main_~main__E1~0 .cse3) (fp.geq ULTIMATE.start_main_~main__E0~0 .cse3))))) is different from true