./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/loop-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6064e167-2612-4cc3-a063-be55662eb8a2/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6064e167-2612-4cc3-a063-be55662eb8a2/bin/uautomizer-tBqnrhUYjU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6064e167-2612-4cc3-a063-be55662eb8a2/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6064e167-2612-4cc3-a063-be55662eb8a2/bin/uautomizer-tBqnrhUYjU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/loop-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6064e167-2612-4cc3-a063-be55662eb8a2/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6064e167-2612-4cc3-a063-be55662eb8a2/bin/uautomizer-tBqnrhUYjU --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 1b0545f8921a3072195050599e45eb6fe3a423f5bd887720e0418c3666aaad9b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 22:16:15,939 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 22:16:15,941 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 22:16:15,981 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 22:16:15,982 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 22:16:15,984 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 22:16:15,986 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 22:16:15,989 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 22:16:15,992 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 22:16:15,994 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 22:16:15,996 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 22:16:15,998 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 22:16:15,999 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 22:16:16,000 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 22:16:16,003 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 22:16:16,007 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 22:16:16,010 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 22:16:16,016 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 22:16:16,018 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 22:16:16,023 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 22:16:16,031 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 22:16:16,038 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 22:16:16,040 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 22:16:16,042 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 22:16:16,047 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 22:16:16,049 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 22:16:16,050 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 22:16:16,052 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 22:16:16,053 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 22:16:16,055 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 22:16:16,057 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 22:16:16,058 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 22:16:16,061 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 22:16:16,063 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 22:16:16,065 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 22:16:16,065 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 22:16:16,066 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 22:16:16,067 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 22:16:16,067 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 22:16:16,068 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 22:16:16,069 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 22:16:16,070 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6064e167-2612-4cc3-a063-be55662eb8a2/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-02 22:16:16,128 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 22:16:16,132 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 22:16:16,133 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 22:16:16,133 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 22:16:16,135 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 22:16:16,135 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 22:16:16,136 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 22:16:16,136 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 22:16:16,136 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-02 22:16:16,137 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 22:16:16,138 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-02 22:16:16,138 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 22:16:16,139 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 22:16:16,139 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 22:16:16,139 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 22:16:16,140 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-02 22:16:16,140 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 22:16:16,140 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 22:16:16,140 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 22:16:16,141 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 22:16:16,141 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 22:16:16,141 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 22:16:16,142 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:16:16,142 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 22:16:16,142 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 22:16:16,143 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 22:16:16,143 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 22:16:16,143 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 22:16:16,143 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 22:16:16,145 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 22:16:16,146 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 22:16:16,146 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 22:16:16,147 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_6064e167-2612-4cc3-a063-be55662eb8a2/bin/uautomizer-tBqnrhUYjU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6064e167-2612-4cc3-a063-be55662eb8a2/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b0545f8921a3072195050599e45eb6fe3a423f5bd887720e0418c3666aaad9b [2021-11-02 22:16:16,520 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 22:16:16,549 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 22:16:16,553 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 22:16:16,554 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 22:16:16,555 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 22:16:16,557 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6064e167-2612-4cc3-a063-be55662eb8a2/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/float-benchs/loop-1.c [2021-11-02 22:16:16,660 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6064e167-2612-4cc3-a063-be55662eb8a2/bin/uautomizer-tBqnrhUYjU/data/04223a42e/374de563e3984d6495285e8a93476e05/FLAG800f5903e [2021-11-02 22:16:17,370 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 22:16:17,372 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6064e167-2612-4cc3-a063-be55662eb8a2/sv-benchmarks/c/float-benchs/loop-1.c [2021-11-02 22:16:17,386 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6064e167-2612-4cc3-a063-be55662eb8a2/bin/uautomizer-tBqnrhUYjU/data/04223a42e/374de563e3984d6495285e8a93476e05/FLAG800f5903e [2021-11-02 22:16:17,714 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6064e167-2612-4cc3-a063-be55662eb8a2/bin/uautomizer-tBqnrhUYjU/data/04223a42e/374de563e3984d6495285e8a93476e05 [2021-11-02 22:16:17,718 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 22:16:17,724 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 22:16:17,728 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 22:16:17,729 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 22:16:17,733 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 22:16:17,735 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:16:17" (1/1) ... [2021-11-02 22:16:17,738 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50f0be25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:16:17, skipping insertion in model container [2021-11-02 22:16:17,738 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:16:17" (1/1) ... [2021-11-02 22:16:17,748 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 22:16:17,767 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 22:16:18,021 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_6064e167-2612-4cc3-a063-be55662eb8a2/sv-benchmarks/c/float-benchs/loop-1.c[311,324] [2021-11-02 22:16:18,045 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:16:18,063 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 22:16:18,081 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_6064e167-2612-4cc3-a063-be55662eb8a2/sv-benchmarks/c/float-benchs/loop-1.c[311,324] [2021-11-02 22:16:18,089 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:16:18,108 INFO L208 MainTranslator]: Completed translation [2021-11-02 22:16:18,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:16:18 WrapperNode [2021-11-02 22:16:18,109 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 22:16:18,111 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 22:16:18,112 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 22:16:18,112 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 22:16:18,122 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:16:18" (1/1) ... [2021-11-02 22:16:18,133 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:16:18" (1/1) ... [2021-11-02 22:16:18,160 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 22:16:18,164 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 22:16:18,165 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 22:16:18,165 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 22:16:18,176 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:16:18" (1/1) ... [2021-11-02 22:16:18,177 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:16:18" (1/1) ... [2021-11-02 22:16:18,180 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:16:18" (1/1) ... [2021-11-02 22:16:18,180 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:16:18" (1/1) ... [2021-11-02 22:16:18,189 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:16:18" (1/1) ... [2021-11-02 22:16:18,198 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:16:18" (1/1) ... [2021-11-02 22:16:18,206 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:16:18" (1/1) ... [2021-11-02 22:16:18,209 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 22:16:18,210 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 22:16:18,211 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 22:16:18,212 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 22:16:18,214 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:16:18" (1/1) ... [2021-11-02 22:16:18,227 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:16:18,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6064e167-2612-4cc3-a063-be55662eb8a2/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:16:18,259 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6064e167-2612-4cc3-a063-be55662eb8a2/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 22:16:18,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6064e167-2612-4cc3-a063-be55662eb8a2/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 22:16:18,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 22:16:18,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 22:16:18,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 22:16:18,334 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 22:16:18,639 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 22:16:18,639 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-11-02 22:16:18,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:16:18 BoogieIcfgContainer [2021-11-02 22:16:18,642 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 22:16:18,644 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 22:16:18,645 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 22:16:18,652 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 22:16:18,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 10:16:17" (1/3) ... [2021-11-02 22:16:18,653 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f5d7717 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:16:18, skipping insertion in model container [2021-11-02 22:16:18,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:16:18" (2/3) ... [2021-11-02 22:16:18,654 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f5d7717 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:16:18, skipping insertion in model container [2021-11-02 22:16:18,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:16:18" (3/3) ... [2021-11-02 22:16:18,656 INFO L111 eAbstractionObserver]: Analyzing ICFG loop-1.c [2021-11-02 22:16:18,664 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 22:16:18,665 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-02 22:16:18,746 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 22:16:18,758 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 [2021-11-02 22:16:18,758 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-02 22:16:18,782 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:16:18,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-02 22:16:18,793 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:16:18,794 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-02 22:16:18,796 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:16:18,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:16:18,805 INFO L85 PathProgramCache]: Analyzing trace with hash 889633835, now seen corresponding path program 1 times [2021-11-02 22:16:18,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:16:18,838 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325408324] [2021-11-02 22:16:18,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:16:18,840 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:16:19,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:16:19,015 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-02 22:16:19,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-02 22:16:19,103 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-02 22:16:19,107 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-02 22:16:19,109 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-02 22:16:19,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 22:16:19,118 INFO L731 BasicCegarLoop]: Path program histogram: [1] [2021-11-02 22:16:19,122 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-02 22:16:19,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 10:16:19 BoogieIcfgContainer [2021-11-02 22:16:19,153 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-02 22:16:19,157 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-02 22:16:19,158 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-02 22:16:19,158 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-02 22:16:19,159 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:16:18" (3/4) ... [2021-11-02 22:16:19,164 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-02 22:16:19,164 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-02 22:16:19,169 INFO L168 Benchmark]: Toolchain (without parser) took 1441.34 ms. Allocated memory is still 130.0 MB. Free memory was 89.8 MB in the beginning and 78.5 MB in the end (delta: 11.2 MB). Peak memory consumption was 7.9 MB. Max. memory is 16.1 GB. [2021-11-02 22:16:19,171 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 130.0 MB. Free memory was 105.8 MB in the beginning and 105.6 MB in the end (delta: 159.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-02 22:16:19,172 INFO L168 Benchmark]: CACSL2BoogieTranslator took 381.87 ms. Allocated memory is still 130.0 MB. Free memory was 89.5 MB in the beginning and 103.7 MB in the end (delta: -14.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-02 22:16:19,174 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.75 ms. Allocated memory is still 130.0 MB. Free memory was 103.7 MB in the beginning and 101.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-02 22:16:19,176 INFO L168 Benchmark]: Boogie Preprocessor took 44.85 ms. Allocated memory is still 130.0 MB. Free memory was 101.9 MB in the beginning and 101.0 MB in the end (delta: 914.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-02 22:16:19,177 INFO L168 Benchmark]: RCFGBuilder took 431.87 ms. Allocated memory is still 130.0 MB. Free memory was 101.0 MB in the beginning and 92.0 MB in the end (delta: 9.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-02 22:16:19,187 INFO L168 Benchmark]: TraceAbstraction took 509.10 ms. Allocated memory is still 130.0 MB. Free memory was 91.4 MB in the beginning and 78.9 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-02 22:16:19,189 INFO L168 Benchmark]: Witness Printer took 6.97 ms. Allocated memory is still 130.0 MB. Free memory was 78.9 MB in the beginning and 78.5 MB in the end (delta: 321.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-02 22:16:19,198 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 130.0 MB. Free memory was 105.8 MB in the beginning and 105.6 MB in the end (delta: 159.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 381.87 ms. Allocated memory is still 130.0 MB. Free memory was 89.5 MB in the beginning and 103.7 MB in the end (delta: -14.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 49.75 ms. Allocated memory is still 130.0 MB. Free memory was 103.7 MB in the beginning and 101.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 44.85 ms. Allocated memory is still 130.0 MB. Free memory was 101.9 MB in the beginning and 101.0 MB in the end (delta: 914.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 431.87 ms. Allocated memory is still 130.0 MB. Free memory was 101.0 MB in the beginning and 92.0 MB in the end (delta: 9.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 509.10 ms. Allocated memory is still 130.0 MB. Free memory was 91.4 MB in the beginning and 78.9 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 6.97 ms. Allocated memory is still 130.0 MB. Free memory was 78.9 MB in the beginning and 78.5 MB in the end (delta: 321.6 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: 4]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 20, overapproximation of someBinaryDOUBLEComparisonOperation at line 20. Possible FailurePath: [L8] float x, y, z; [L10] x = 1.f [L11] y = 1e7 [L12] z = 42.f [L14] COND FALSE !(x < y) [L4] COND TRUE !(cond) [L4] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-02 22:16:19,275 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6064e167-2612-4cc3-a063-be55662eb8a2/bin/uautomizer-tBqnrhUYjU/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_6064e167-2612-4cc3-a063-be55662eb8a2/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6064e167-2612-4cc3-a063-be55662eb8a2/bin/uautomizer-tBqnrhUYjU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6064e167-2612-4cc3-a063-be55662eb8a2/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6064e167-2612-4cc3-a063-be55662eb8a2/bin/uautomizer-tBqnrhUYjU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/loop-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6064e167-2612-4cc3-a063-be55662eb8a2/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6064e167-2612-4cc3-a063-be55662eb8a2/bin/uautomizer-tBqnrhUYjU --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 1b0545f8921a3072195050599e45eb6fe3a423f5bd887720e0418c3666aaad9b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 22:16:22,378 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 22:16:22,381 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 22:16:22,434 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 22:16:22,434 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 22:16:22,440 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 22:16:22,443 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 22:16:22,453 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 22:16:22,457 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 22:16:22,468 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 22:16:22,470 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 22:16:22,473 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 22:16:22,474 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 22:16:22,478 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 22:16:22,482 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 22:16:22,489 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 22:16:22,490 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 22:16:22,492 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 22:16:22,495 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 22:16:22,505 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 22:16:22,509 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 22:16:22,511 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 22:16:22,515 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 22:16:22,518 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 22:16:22,532 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 22:16:22,533 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 22:16:22,534 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 22:16:22,537 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 22:16:22,538 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 22:16:22,540 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 22:16:22,541 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 22:16:22,543 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 22:16:22,545 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 22:16:22,547 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 22:16:22,549 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 22:16:22,550 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 22:16:22,551 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 22:16:22,552 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 22:16:22,552 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 22:16:22,555 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 22:16:22,556 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 22:16:22,563 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6064e167-2612-4cc3-a063-be55662eb8a2/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-11-02 22:16:22,627 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 22:16:22,627 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 22:16:22,629 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 22:16:22,629 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 22:16:22,632 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 22:16:22,632 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 22:16:22,633 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 22:16:22,633 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 22:16:22,633 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-02 22:16:22,634 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-02 22:16:22,635 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 22:16:22,636 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 22:16:22,636 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 22:16:22,636 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 22:16:22,637 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-02 22:16:22,637 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-02 22:16:22,637 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-02 22:16:22,638 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 22:16:22,638 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 22:16:22,638 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 22:16:22,639 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 22:16:22,639 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 22:16:22,639 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 22:16:22,640 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:16:22,640 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 22:16:22,640 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 22:16:22,641 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 22:16:22,641 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-02 22:16:22,641 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-02 22:16:22,641 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 22:16:22,642 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 22:16:22,642 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 22:16:22,643 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 22:16:22,643 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-02 22:16:22,643 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_6064e167-2612-4cc3-a063-be55662eb8a2/bin/uautomizer-tBqnrhUYjU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6064e167-2612-4cc3-a063-be55662eb8a2/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b0545f8921a3072195050599e45eb6fe3a423f5bd887720e0418c3666aaad9b [2021-11-02 22:16:23,186 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 22:16:23,225 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 22:16:23,229 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 22:16:23,231 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 22:16:23,232 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 22:16:23,233 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6064e167-2612-4cc3-a063-be55662eb8a2/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/float-benchs/loop-1.c [2021-11-02 22:16:23,330 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6064e167-2612-4cc3-a063-be55662eb8a2/bin/uautomizer-tBqnrhUYjU/data/ec2a18d61/69aba7640c234921a5da4399c3935657/FLAG9eb2f79d2 [2021-11-02 22:16:23,994 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 22:16:23,995 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6064e167-2612-4cc3-a063-be55662eb8a2/sv-benchmarks/c/float-benchs/loop-1.c [2021-11-02 22:16:24,003 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6064e167-2612-4cc3-a063-be55662eb8a2/bin/uautomizer-tBqnrhUYjU/data/ec2a18d61/69aba7640c234921a5da4399c3935657/FLAG9eb2f79d2 [2021-11-02 22:16:24,342 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6064e167-2612-4cc3-a063-be55662eb8a2/bin/uautomizer-tBqnrhUYjU/data/ec2a18d61/69aba7640c234921a5da4399c3935657 [2021-11-02 22:16:24,346 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 22:16:24,348 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 22:16:24,366 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 22:16:24,366 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 22:16:24,371 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 22:16:24,372 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:16:24" (1/1) ... [2021-11-02 22:16:24,374 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@493da4c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:16:24, skipping insertion in model container [2021-11-02 22:16:24,374 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:16:24" (1/1) ... [2021-11-02 22:16:24,384 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 22:16:24,401 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 22:16:24,563 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_6064e167-2612-4cc3-a063-be55662eb8a2/sv-benchmarks/c/float-benchs/loop-1.c[311,324] [2021-11-02 22:16:24,608 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:16:24,632 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 22:16:24,656 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_6064e167-2612-4cc3-a063-be55662eb8a2/sv-benchmarks/c/float-benchs/loop-1.c[311,324] [2021-11-02 22:16:24,668 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:16:24,694 INFO L208 MainTranslator]: Completed translation [2021-11-02 22:16:24,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:16:24 WrapperNode [2021-11-02 22:16:24,695 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 22:16:24,697 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 22:16:24,697 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 22:16:24,698 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 22:16:24,730 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:16:24" (1/1) ... [2021-11-02 22:16:24,774 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:16:24" (1/1) ... [2021-11-02 22:16:24,815 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 22:16:24,817 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 22:16:24,817 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 22:16:24,818 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 22:16:24,829 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:16:24" (1/1) ... [2021-11-02 22:16:24,829 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:16:24" (1/1) ... [2021-11-02 22:16:24,854 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:16:24" (1/1) ... [2021-11-02 22:16:24,855 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:16:24" (1/1) ... [2021-11-02 22:16:24,864 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:16:24" (1/1) ... [2021-11-02 22:16:24,873 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:16:24" (1/1) ... [2021-11-02 22:16:24,884 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:16:24" (1/1) ... [2021-11-02 22:16:24,888 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 22:16:24,896 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 22:16:24,897 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 22:16:24,897 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 22:16:24,898 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:16:24" (1/1) ... [2021-11-02 22:16:24,908 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:16:24,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6064e167-2612-4cc3-a063-be55662eb8a2/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:16:24,944 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6064e167-2612-4cc3-a063-be55662eb8a2/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 22:16:24,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6064e167-2612-4cc3-a063-be55662eb8a2/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 22:16:25,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 22:16:25,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 22:16:25,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-02 22:16:25,014 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 22:16:25,892 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 22:16:25,892 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-11-02 22:16:25,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:16:25 BoogieIcfgContainer [2021-11-02 22:16:25,895 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 22:16:25,898 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 22:16:25,898 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 22:16:25,902 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 22:16:25,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 10:16:24" (1/3) ... [2021-11-02 22:16:25,904 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1036e044 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:16:25, skipping insertion in model container [2021-11-02 22:16:25,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:16:24" (2/3) ... [2021-11-02 22:16:25,905 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1036e044 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:16:25, skipping insertion in model container [2021-11-02 22:16:25,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:16:25" (3/3) ... [2021-11-02 22:16:25,907 INFO L111 eAbstractionObserver]: Analyzing ICFG loop-1.c [2021-11-02 22:16:25,915 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 22:16:25,915 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-02 22:16:25,979 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 22:16:25,988 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 [2021-11-02 22:16:25,989 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-02 22:16:26,007 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:16:26,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-02 22:16:26,014 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:16:26,015 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-02 22:16:26,016 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:16:26,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:16:26,024 INFO L85 PathProgramCache]: Analyzing trace with hash 889633835, now seen corresponding path program 1 times [2021-11-02 22:16:26,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:16:26,040 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1923635827] [2021-11-02 22:16:26,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:16:26,041 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:16:26,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6064e167-2612-4cc3-a063-be55662eb8a2/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:16:26,065 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6064e167-2612-4cc3-a063-be55662eb8a2/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:16:26,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6064e167-2612-4cc3-a063-be55662eb8a2/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-02 22:16:26,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:16:26,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 22:16:26,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:16:26,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:16:26,387 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:16:26,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:16:26,460 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:16:26,461 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1923635827] [2021-11-02 22:16:26,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1923635827] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:16:26,462 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:16:26,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-02 22:16:26,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591792915] [2021-11-02 22:16:26,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:16:26,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:16:26,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:16:26,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:16:26,494 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:16:27,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:16:27,318 INFO L93 Difference]: Finished difference Result 21 states and 27 transitions. [2021-11-02 22:16:27,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:16:27,328 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-02 22:16:27,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:16:27,337 INFO L225 Difference]: With dead ends: 21 [2021-11-02 22:16:27,338 INFO L226 Difference]: Without dead ends: 9 [2021-11-02 22:16:27,341 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:16:27,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-11-02 22:16:27,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-11-02 22:16:27,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:16:27,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2021-11-02 22:16:27,374 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2021-11-02 22:16:27,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:16:27,375 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2021-11-02 22:16:27,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:16:27,376 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2021-11-02 22:16:27,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-02 22:16:27,377 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:16:27,377 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2021-11-02 22:16:27,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6064e167-2612-4cc3-a063-be55662eb8a2/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-02 22:16:27,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6064e167-2612-4cc3-a063-be55662eb8a2/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:16:27,594 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:16:27,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:16:27,596 INFO L85 PathProgramCache]: Analyzing trace with hash 292915403, now seen corresponding path program 1 times [2021-11-02 22:16:27,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:16:27,597 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2078176039] [2021-11-02 22:16:27,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:16:27,598 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:16:27,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6064e167-2612-4cc3-a063-be55662eb8a2/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:16:27,600 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6064e167-2612-4cc3-a063-be55662eb8a2/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:16:27,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6064e167-2612-4cc3-a063-be55662eb8a2/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-02 22:16:27,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:16:27,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-02 22:16:27,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:16:28,230 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:16:28,231 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:16:49,015 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:16:49,016 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:16:49,016 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2078176039] [2021-11-02 22:16:49,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2078176039] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 22:16:49,017 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:16:49,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-11-02 22:16:49,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239557828] [2021-11-02 22:16:49,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-02 22:16:49,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:16:49,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-02 22:16:49,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=42, Unknown=4, NotChecked=0, Total=72 [2021-11-02 22:16:49,022 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 9 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:17:07,108 WARN L207 SmtUtils]: Spent 10.48 s on a formula simplification that was a NOOP. DAG size: 15 [2021-11-02 22:17:27,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:17:27,930 INFO L93 Difference]: Finished difference Result 17 states and 20 transitions. [2021-11-02 22:17:27,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-02 22:17:27,936 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-02 22:17:27,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:17:27,937 INFO L225 Difference]: With dead ends: 17 [2021-11-02 22:17:27,937 INFO L226 Difference]: Without dead ends: 13 [2021-11-02 22:17:27,938 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 42.3s TimeCoverageRelationStatistics Valid=60, Invalid=92, Unknown=4, NotChecked=0, Total=156 [2021-11-02 22:17:27,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-11-02 22:17:27,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-11-02 22:17:27,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 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) [2021-11-02 22:17:27,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-11-02 22:17:27,944 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 8 [2021-11-02 22:17:27,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:17:27,945 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-11-02 22:17:27,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:17:27,945 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-11-02 22:17:27,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-02 22:17:27,946 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:17:27,947 INFO L513 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1] [2021-11-02 22:17:27,972 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6064e167-2612-4cc3-a063-be55662eb8a2/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-02 22:17:28,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6064e167-2612-4cc3-a063-be55662eb8a2/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:17:28,148 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 22:17:28,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:17:28,149 INFO L85 PathProgramCache]: Analyzing trace with hash -967103989, now seen corresponding path program 2 times [2021-11-02 22:17:28,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:17:28,151 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [249945894] [2021-11-02 22:17:28,151 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:17:28,151 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:17:28,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6064e167-2612-4cc3-a063-be55662eb8a2/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:17:28,153 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6064e167-2612-4cc3-a063-be55662eb8a2/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:17:28,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6064e167-2612-4cc3-a063-be55662eb8a2/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-02 22:17:28,805 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:17:28,805 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:17:28,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-02 22:17:28,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:17:33,329 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:17:33,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:18:12,882 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~z~0 .cse1) .cse1) .cse1)))) (and (fp.geq .cse0 (_ +zero 8 24)) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse0) ((_ to_fp 11 53) c_currentRoundingMode 100000000.0)))) is different from true [2021-11-02 22:18:19,127 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~z~0 .cse1) .cse1) .cse1) .cse1)))) (and (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse0) ((_ to_fp 11 53) c_currentRoundingMode 100000000.0)) (fp.geq .cse0 (_ +zero 8 24)))) is different from false [2021-11-02 22:18:32,312 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~z~0 .cse1) .cse1) .cse1) .cse1) .cse1)))) (and (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse0) ((_ to_fp 11 53) c_currentRoundingMode 100000000.0)) (fp.geq .cse0 (_ +zero 8 24)))) is different from true [2021-11-02 22:18:42,047 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~z~0 .cse1) .cse1) .cse1) .cse1) .cse1) .cse1)))) (and (fp.geq .cse0 (_ +zero 8 24)) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse0) ((_ to_fp 11 53) c_currentRoundingMode 100000000.0)))) is different from false [2021-11-02 22:18:44,076 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode 1.0))) (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode (fp.add c_currentRoundingMode c_ULTIMATE.start_main_~z~0 .cse1) .cse1) .cse1) .cse1) .cse1) .cse1)))) (and (fp.geq .cse0 (_ +zero 8 24)) (fp.leq ((_ to_fp 11 53) c_currentRoundingMode .cse0) ((_ to_fp 11 53) c_currentRoundingMode 100000000.0)))) is different from true [2021-11-02 22:18:44,111 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 18 not checked. [2021-11-02 22:18:44,112 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:18:44,112 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [249945894] [2021-11-02 22:18:44,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [249945894] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 22:18:44,113 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:18:44,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-11-02 22:18:44,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540352304] [2021-11-02 22:18:44,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-02 22:18:44,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:18:44,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-02 22:18:44,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=156, Unknown=6, NotChecked=116, Total=342 [2021-11-02 22:18:44,116 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 19 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 states have internal predecessors, (23), 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) [2021-11-02 22:19:49,420 WARN L207 SmtUtils]: Spent 19.36 s on a formula simplification. DAG size of input: 21 DAG size of output: 16 [2021-11-02 22:20:28,546 WARN L207 SmtUtils]: Spent 17.85 s on a formula simplification. DAG size of input: 24 DAG size of output: 19 [2021-11-02 22:20:28,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:20:28,548 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2021-11-02 22:20:28,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-02 22:20:28,548 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-02 22:20:28,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:20:28,549 INFO L225 Difference]: With dead ends: 16 [2021-11-02 22:20:28,549 INFO L226 Difference]: Without dead ends: 0 [2021-11-02 22:20:28,550 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 5 SemanticMatches, 20 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 133.4s TimeCoverageRelationStatistics Valid=97, Invalid=218, Unknown=7, NotChecked=140, Total=462 [2021-11-02 22:20:28,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-02 22:20:28,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-02 22:20:28,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:20:28,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-02 22:20:28,551 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2021-11-02 22:20:28,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:20:28,551 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-02 22:20:28,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 states have internal predecessors, (23), 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) [2021-11-02 22:20:28,552 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-02 22:20:28,552 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-02 22:20:28,555 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-02 22:20:28,580 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6064e167-2612-4cc3-a063-be55662eb8a2/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-02 22:20:28,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6064e167-2612-4cc3-a063-be55662eb8a2/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:20:28,767 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-02 22:20:28,771 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 22:20:28,805 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 22:20:28,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-02 22:21:06,425 WARN L207 SmtUtils]: Spent 37.56 s on a formula simplification. DAG size of input: 68 DAG size of output: 16 [2021-11-02 22:21:06,428 INFO L860 garLoopResultBuilder]: At program point L4-3(line 4) the Hoare annotation is: true [2021-11-02 22:21:06,428 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-02 22:21:06,428 INFO L860 garLoopResultBuilder]: At program point L21(lines 6 22) the Hoare annotation is: true [2021-11-02 22:21:06,428 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-02 22:21:06,429 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-02 22:21:06,429 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-02 22:21:06,429 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2021-11-02 22:21:06,430 INFO L853 garLoopResultBuilder]: At program point L14-2(lines 14 18) the Hoare annotation is: (let ((.cse0 ((_ to_fp 11 53) currentRoundingMode 100000000.0))) (and (fp.geq ULTIMATE.start_main_~z~0 (_ +zero 8 24)) (fp.leq ((_ to_fp 11 53) currentRoundingMode (fp.add currentRoundingMode ULTIMATE.start_main_~z~0 ((_ to_fp 8 24) currentRoundingMode 1.0))) .cse0) (= currentRoundingMode roundNearestTiesToEven) (fp.leq ((_ to_fp 11 53) currentRoundingMode ULTIMATE.start_main_~z~0) .cse0))) [2021-11-02 22:21:06,430 INFO L857 garLoopResultBuilder]: For program point L14-3(lines 14 18) no Hoare annotation was computed. [2021-11-02 22:21:06,430 INFO L857 garLoopResultBuilder]: For program point L4(line 4) no Hoare annotation was computed. [2021-11-02 22:21:06,430 INFO L857 garLoopResultBuilder]: For program point L4-1(line 4) no Hoare annotation was computed. [2021-11-02 22:21:06,434 INFO L731 BasicCegarLoop]: Path program histogram: [2, 1] [2021-11-02 22:21:06,435 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-02 22:21:06,449 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-02 22:21:06,458 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-02 22:21:06,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 10:21:06 BoogieIcfgContainer [2021-11-02 22:21:06,465 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-02 22:21:06,467 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-02 22:21:06,467 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-02 22:21:06,468 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-02 22:21:06,468 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:16:25" (3/4) ... [2021-11-02 22:21:06,474 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-02 22:21:06,487 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-11-02 22:21:06,488 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-11-02 22:21:06,489 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-02 22:21:06,489 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-02 22:21:06,566 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6064e167-2612-4cc3-a063-be55662eb8a2/bin/uautomizer-tBqnrhUYjU/witness.graphml [2021-11-02 22:21:06,566 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-02 22:21:06,568 INFO L168 Benchmark]: Toolchain (without parser) took 282218.58 ms. Allocated memory was 54.5 MB in the beginning and 71.3 MB in the end (delta: 16.8 MB). Free memory was 33.0 MB in the beginning and 45.4 MB in the end (delta: -12.4 MB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. [2021-11-02 22:21:06,570 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 54.5 MB. Free memory is still 35.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-02 22:21:06,571 INFO L168 Benchmark]: CACSL2BoogieTranslator took 329.54 ms. Allocated memory is still 54.5 MB. Free memory was 32.8 MB in the beginning and 36.4 MB in the end (delta: -3.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 16.1 GB. [2021-11-02 22:21:06,577 INFO L168 Benchmark]: Boogie Procedure Inliner took 118.49 ms. Allocated memory was 54.5 MB in the beginning and 71.3 MB in the end (delta: 16.8 MB). Free memory was 36.4 MB in the beginning and 54.3 MB in the end (delta: -17.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-02 22:21:06,579 INFO L168 Benchmark]: Boogie Preprocessor took 78.15 ms. Allocated memory is still 71.3 MB. Free memory was 54.3 MB in the beginning and 53.1 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-02 22:21:06,580 INFO L168 Benchmark]: RCFGBuilder took 998.92 ms. Allocated memory is still 71.3 MB. Free memory was 53.1 MB in the beginning and 44.0 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-02 22:21:06,580 INFO L168 Benchmark]: TraceAbstraction took 280568.10 ms. Allocated memory is still 71.3 MB. Free memory was 43.5 MB in the beginning and 48.0 MB in the end (delta: -4.5 MB). Peak memory consumption was 19.3 MB. Max. memory is 16.1 GB. [2021-11-02 22:21:06,581 INFO L168 Benchmark]: Witness Printer took 99.39 ms. Allocated memory is still 71.3 MB. Free memory was 48.0 MB in the beginning and 45.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-02 22:21:06,587 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 54.5 MB. Free memory is still 35.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 329.54 ms. Allocated memory is still 54.5 MB. Free memory was 32.8 MB in the beginning and 36.4 MB in the end (delta: -3.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 118.49 ms. Allocated memory was 54.5 MB in the beginning and 71.3 MB in the end (delta: 16.8 MB). Free memory was 36.4 MB in the beginning and 54.3 MB in the end (delta: -17.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 78.15 ms. Allocated memory is still 71.3 MB. Free memory was 54.3 MB in the beginning and 53.1 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 998.92 ms. Allocated memory is still 71.3 MB. Free memory was 53.1 MB in the beginning and 44.0 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 280568.10 ms. Allocated memory is still 71.3 MB. Free memory was 43.5 MB in the beginning and 48.0 MB in the end (delta: -4.5 MB). Peak memory consumption was 19.3 MB. Max. memory is 16.1 GB. * Witness Printer took 99.39 ms. Allocated memory is still 71.3 MB. Free memory was 48.0 MB in the beginning and 45.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 4]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 280.4s, OverallIterations: 3, TraceHistogramMax: 6, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 144.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 37.6s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 16 SDtfs, 18 SDslu, 28 SDs, 0 SdLazy, 116 SolverSat, 30 SolverUnsat, 6 SolverUnknown, 0 SolverNotchecked, 33.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 58 GetRequests, 20 SyntacticMatches, 5 SemanticMatches, 33 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 175.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=2, InterpolantAutomatonStates: 26, 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 12 NumberOfFragments, 28 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 310 FormulaSimplificationTreeSizeReductionInter, 37.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 96.6s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 46 ConstructedInterpolants, 1 QuantifiedInterpolants, 667 SizeOfPredicates, 10 NumberOfNonLiveVariables, 122 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 0/48 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 4]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 14]: Loop Invariant [2021-11-02 22:21:06,608 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-11-02 22:21:06,609 WARN L418 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: ((~fp.geq~FLOAT(z, ~Pluszero~LONGDOUBLE()) && ~fp.leq~DOUBLE(~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~fp.add~FLOAT(unknown-currentRoundingMode-unknown, z, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0))), ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E8))) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && ~fp.leq~DOUBLE(~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, z), ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E8)) RESULT: Ultimate proved your program to be correct! [2021-11-02 22:21:06,743 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6064e167-2612-4cc3-a063-be55662eb8a2/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE