./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_0730c.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673f42d2-0f2f-4811-b653-c6b159b49923/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673f42d2-0f2f-4811-b653-c6b159b49923/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673f42d2-0f2f-4811-b653-c6b159b49923/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673f42d2-0f2f-4811-b653-c6b159b49923/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0730c.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673f42d2-0f2f-4811-b653-c6b159b49923/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673f42d2-0f2f-4811-b653-c6b159b49923/bin/utaipan-9zjyvhn0QE --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f8c3d6863785ed03feeabfa34c0c11607b9ab236b069ea505eed9d256d26078d .............................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673f42d2-0f2f-4811-b653-c6b159b49923/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673f42d2-0f2f-4811-b653-c6b159b49923/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673f42d2-0f2f-4811-b653-c6b159b49923/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673f42d2-0f2f-4811-b653-c6b159b49923/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0730c.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673f42d2-0f2f-4811-b653-c6b159b49923/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673f42d2-0f2f-4811-b653-c6b159b49923/bin/utaipan-9zjyvhn0QE --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f8c3d6863785ed03feeabfa34c0c11607b9ab236b069ea505eed9d256d26078d .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 09:41:13,067 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 09:41:13,069 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 09:41:13,115 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 09:41:13,115 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 09:41:13,120 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 09:41:13,122 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 09:41:13,126 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 09:41:13,128 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 09:41:13,136 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 09:41:13,137 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 09:41:13,139 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 09:41:13,139 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 09:41:13,142 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 09:41:13,145 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 09:41:13,149 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 09:41:13,154 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 09:41:13,155 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 09:41:13,158 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 09:41:13,165 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 09:41:13,167 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 09:41:13,169 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 09:41:13,172 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 09:41:13,173 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 09:41:13,179 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 09:41:13,180 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 09:41:13,180 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 09:41:13,182 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 09:41:13,183 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 09:41:13,184 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 09:41:13,185 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 09:41:13,186 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 09:41:13,188 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 09:41:13,189 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 09:41:13,192 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 09:41:13,192 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 09:41:13,193 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 09:41:13,193 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 09:41:13,193 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 09:41:13,194 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 09:41:13,195 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 09:41:13,196 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673f42d2-0f2f-4811-b653-c6b159b49923/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-24 09:41:13,222 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 09:41:13,222 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 09:41:13,223 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 09:41:13,223 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 09:41:13,224 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 09:41:13,224 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 09:41:13,224 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 09:41:13,224 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 09:41:13,224 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 09:41:13,225 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 09:41:13,225 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 09:41:13,225 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 09:41:13,225 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 09:41:13,225 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 09:41:13,225 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 09:41:13,226 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 09:41:13,226 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 09:41:13,227 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 09:41:13,227 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 09:41:13,227 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 09:41:13,227 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 09:41:13,227 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 09:41:13,227 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 09:41:13,228 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 09:41:13,228 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 09:41:13,228 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 09:41:13,228 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 09:41:13,228 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 09:41:13,229 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 09:41:13,229 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 09:41:13,229 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 09:41:13,229 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 09:41:13,229 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 09:41:13,230 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 09:41:13,230 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 09:41:13,230 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 09:41:13,230 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 09:41:13,230 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 09:41:13,231 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 09:41:13,231 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_673f42d2-0f2f-4811-b653-c6b159b49923/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673f42d2-0f2f-4811-b653-c6b159b49923/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f8c3d6863785ed03feeabfa34c0c11607b9ab236b069ea505eed9d256d26078d [2021-10-24 09:41:13,457 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 09:41:13,477 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 09:41:13,480 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 09:41:13,481 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 09:41:13,482 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 09:41:13,483 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673f42d2-0f2f-4811-b653-c6b159b49923/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/float-newlib/double_req_bl_0730c.c [2021-10-24 09:41:13,579 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673f42d2-0f2f-4811-b653-c6b159b49923/bin/utaipan-9zjyvhn0QE/data/059df89b4/89671c674e0b422d881998fc0b3ae0cd/FLAG428105a1d [2021-10-24 09:41:14,024 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 09:41:14,025 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673f42d2-0f2f-4811-b653-c6b159b49923/sv-benchmarks/c/float-newlib/double_req_bl_0730c.c [2021-10-24 09:41:14,037 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673f42d2-0f2f-4811-b653-c6b159b49923/bin/utaipan-9zjyvhn0QE/data/059df89b4/89671c674e0b422d881998fc0b3ae0cd/FLAG428105a1d [2021-10-24 09:41:14,397 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673f42d2-0f2f-4811-b653-c6b159b49923/bin/utaipan-9zjyvhn0QE/data/059df89b4/89671c674e0b422d881998fc0b3ae0cd [2021-10-24 09:41:14,399 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 09:41:14,401 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 09:41:14,402 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 09:41:14,403 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 09:41:14,406 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 09:41:14,407 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:41:14" (1/1) ... [2021-10-24 09:41:14,408 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bf3b86c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:41:14, skipping insertion in model container [2021-10-24 09:41:14,408 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:41:14" (1/1) ... [2021-10-24 09:41:14,427 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 09:41:14,447 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 09:41:14,654 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_673f42d2-0f2f-4811-b653-c6b159b49923/sv-benchmarks/c/float-newlib/double_req_bl_0730c.c[3223,3236] [2021-10-24 09:41:14,657 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 09:41:14,665 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 09:41:14,704 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_673f42d2-0f2f-4811-b653-c6b159b49923/sv-benchmarks/c/float-newlib/double_req_bl_0730c.c[3223,3236] [2021-10-24 09:41:14,705 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 09:41:14,719 INFO L208 MainTranslator]: Completed translation [2021-10-24 09:41:14,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:41:14 WrapperNode [2021-10-24 09:41:14,720 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 09:41:14,721 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 09:41:14,721 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 09:41:14,722 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 09:41:14,729 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:41:14" (1/1) ... [2021-10-24 09:41:14,739 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:41:14" (1/1) ... [2021-10-24 09:41:14,775 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 09:41:14,775 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 09:41:14,776 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 09:41:14,776 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 09:41:14,784 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:41:14" (1/1) ... [2021-10-24 09:41:14,784 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:41:14" (1/1) ... [2021-10-24 09:41:14,787 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:41:14" (1/1) ... [2021-10-24 09:41:14,788 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:41:14" (1/1) ... [2021-10-24 09:41:14,797 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:41:14" (1/1) ... [2021-10-24 09:41:14,803 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:41:14" (1/1) ... [2021-10-24 09:41:14,806 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:41:14" (1/1) ... [2021-10-24 09:41:14,810 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 09:41:14,811 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 09:41:14,811 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 09:41:14,811 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 09:41:14,813 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:41:14" (1/1) ... [2021-10-24 09:41:14,842 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 09:41:14,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673f42d2-0f2f-4811-b653-c6b159b49923/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 09:41:14,876 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673f42d2-0f2f-4811-b653-c6b159b49923/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 09:41:14,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673f42d2-0f2f-4811-b653-c6b159b49923/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 09:41:14,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-24 09:41:14,926 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 09:41:14,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-10-24 09:41:14,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-24 09:41:14,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-10-24 09:41:14,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 09:41:14,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 09:41:14,929 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-24 09:41:14,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-24 09:41:15,837 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 09:41:15,837 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2021-10-24 09:41:15,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:41:15 BoogieIcfgContainer [2021-10-24 09:41:15,843 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 09:41:15,845 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 09:41:15,845 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 09:41:15,856 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 09:41:15,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:41:14" (1/3) ... [2021-10-24 09:41:15,857 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fc36be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:41:15, skipping insertion in model container [2021-10-24 09:41:15,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:41:14" (2/3) ... [2021-10-24 09:41:15,857 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fc36be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:41:15, skipping insertion in model container [2021-10-24 09:41:15,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:41:15" (3/3) ... [2021-10-24 09:41:15,859 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0730c.c [2021-10-24 09:41:15,863 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 09:41:15,863 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-24 09:41:15,917 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 09:41:15,933 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=FINITE_AUTOMATA, 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 [2021-10-24 09:41:15,933 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-24 09:41:15,950 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 25 states have (on average 1.72) internal successors, (43), 26 states have internal predecessors, (43), 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) [2021-10-24 09:41:15,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-24 09:41:15,977 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:41:15,978 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:41:15,978 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:41:15,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:41:15,989 INFO L82 PathProgramCache]: Analyzing trace with hash 1451113073, now seen corresponding path program 1 times [2021-10-24 09:41:16,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:41:16,000 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418477758] [2021-10-24 09:41:16,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:41:16,001 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:41:16,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:41:16,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:41:16,169 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 09:41:16,170 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418477758] [2021-10-24 09:41:16,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418477758] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-24 09:41:16,171 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:41:16,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-24 09:41:16,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232239196] [2021-10-24 09:41:16,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-24 09:41:16,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 09:41:16,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-24 09:41:16,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-24 09:41:16,203 INFO L87 Difference]: Start difference. First operand has 27 states, 25 states have (on average 1.72) internal successors, (43), 26 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2021-10-24 09:41:16,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:41:16,228 INFO L93 Difference]: Finished difference Result 53 states and 85 transitions. [2021-10-24 09:41:16,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-24 09:41:16,230 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-24 09:41:16,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:41:16,238 INFO L225 Difference]: With dead ends: 53 [2021-10-24 09:41:16,239 INFO L226 Difference]: Without dead ends: 25 [2021-10-24 09:41:16,242 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-24 09:41:16,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-10-24 09:41:16,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-10-24 09:41:16,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 24 states have internal predecessors, (34), 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) [2021-10-24 09:41:16,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 34 transitions. [2021-10-24 09:41:16,282 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 34 transitions. Word has length 7 [2021-10-24 09:41:16,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:41:16,282 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 34 transitions. [2021-10-24 09:41:16,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2021-10-24 09:41:16,283 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 34 transitions. [2021-10-24 09:41:16,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-24 09:41:16,284 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:41:16,284 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:41:16,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-24 09:41:16,285 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:41:16,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:41:16,290 INFO L82 PathProgramCache]: Analyzing trace with hash -237034198, now seen corresponding path program 1 times [2021-10-24 09:41:16,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 09:41:16,290 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661024128] [2021-10-24 09:41:16,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:41:16,291 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 09:41:16,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 09:41:16,365 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-24 09:41:16,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 09:41:16,439 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-24 09:41:16,440 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-24 09:41:16,442 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 09:41:16,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-24 09:41:16,452 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 09:41:16,479 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:41:16 BoogieIcfgContainer [2021-10-24 09:41:16,479 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 09:41:16,480 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 09:41:16,480 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 09:41:16,480 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 09:41:16,481 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:41:15" (3/4) ... [2021-10-24 09:41:16,484 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-24 09:41:16,484 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 09:41:16,486 INFO L168 Benchmark]: Toolchain (without parser) took 2084.35 ms. Allocated memory is still 125.8 MB. Free memory was 93.4 MB in the beginning and 76.7 MB in the end (delta: 16.7 MB). Peak memory consumption was 17.3 MB. Max. memory is 16.1 GB. [2021-10-24 09:41:16,487 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 83.9 MB. Free memory was 42.5 MB in the beginning and 42.5 MB in the end (delta: 45.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 09:41:16,490 INFO L168 Benchmark]: CACSL2BoogieTranslator took 318.10 ms. Allocated memory is still 125.8 MB. Free memory was 93.4 MB in the beginning and 100.0 MB in the end (delta: -6.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-24 09:41:16,492 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.59 ms. Allocated memory is still 125.8 MB. Free memory was 100.0 MB in the beginning and 97.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 09:41:16,496 INFO L168 Benchmark]: Boogie Preprocessor took 34.83 ms. Allocated memory is still 125.8 MB. Free memory was 97.9 MB in the beginning and 96.2 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 09:41:16,498 INFO L168 Benchmark]: RCFGBuilder took 1032.08 ms. Allocated memory is still 125.8 MB. Free memory was 95.8 MB in the beginning and 101.7 MB in the end (delta: -5.9 MB). Peak memory consumption was 37.2 MB. Max. memory is 16.1 GB. [2021-10-24 09:41:16,499 INFO L168 Benchmark]: TraceAbstraction took 634.84 ms. Allocated memory is still 125.8 MB. Free memory was 101.1 MB in the beginning and 76.7 MB in the end (delta: 24.4 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2021-10-24 09:41:16,500 INFO L168 Benchmark]: Witness Printer took 4.42 ms. Allocated memory is still 125.8 MB. Free memory is still 76.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 09:41:16,505 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 83.9 MB. Free memory was 42.5 MB in the beginning and 42.5 MB in the end (delta: 45.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 318.10 ms. Allocated memory is still 125.8 MB. Free memory was 93.4 MB in the beginning and 100.0 MB in the end (delta: -6.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 53.59 ms. Allocated memory is still 125.8 MB. Free memory was 100.0 MB in the beginning and 97.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.83 ms. Allocated memory is still 125.8 MB. Free memory was 97.9 MB in the beginning and 96.2 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 1032.08 ms. Allocated memory is still 125.8 MB. Free memory was 95.8 MB in the beginning and 101.7 MB in the end (delta: -5.9 MB). Peak memory consumption was 37.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 634.84 ms. Allocated memory is still 125.8 MB. Free memory was 101.1 MB in the beginning and 76.7 MB in the end (delta: 24.4 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * Witness Printer took 4.42 ms. Allocated memory is still 125.8 MB. Free memory is still 76.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 156]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 155, overapproximation of someBinaryArithmeticDOUBLEoperation at line 35, overapproximation of bitwiseAnd at line 34. Possible FailurePath: [L19] static const double one_sqrt = 1.0, tiny_sqrt = 1.0e-300; [L151] double x = 0.0; [L22] double z; [L23] __int32_t sign = 0x80000000; [L24] __uint32_t r, t1, s1, ix1, q1; [L25] __int32_t ix0, s0, q, m, t, i; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L28] ieee_double_shape_type ew_u; [L29] ew_u.value = (x) [L30] EXPR ew_u.parts.msw [L30] (ix0) = ew_u.parts.msw [L31] EXPR ew_u.parts.lsw [L31] (ix1) = ew_u.parts.lsw [L34] COND TRUE (ix0 & 0x7ff00000) == 0x7ff00000 [L35] return x * x + x; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L152] double res = __ieee754_sqrt(x); [L155] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L155] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L156] reach_error() VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 535.5ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 32.0ms, AutomataDifference: 58.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 12.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 36 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 25.2ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 14.4ms SsaConstructionTime, 88.4ms SatisfiabilityAnalysisTime, 57.4ms InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-24 09:41:16,565 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673f42d2-0f2f-4811-b653-c6b159b49923/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 09:41:18,879 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 09:41:18,882 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 09:41:18,917 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 09:41:18,918 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 09:41:18,920 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 09:41:18,922 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 09:41:18,924 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 09:41:18,927 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 09:41:18,928 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 09:41:18,929 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 09:41:18,931 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 09:41:18,931 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 09:41:18,933 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 09:41:18,935 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 09:41:18,936 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 09:41:18,937 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 09:41:18,939 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 09:41:18,941 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 09:41:18,943 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 09:41:18,945 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 09:41:18,947 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 09:41:18,949 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 09:41:18,950 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 09:41:18,954 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 09:41:18,954 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 09:41:18,955 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 09:41:18,956 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 09:41:18,957 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 09:41:18,958 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 09:41:18,958 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 09:41:18,959 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 09:41:18,960 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 09:41:18,961 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 09:41:18,963 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 09:41:18,963 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 09:41:18,964 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 09:41:18,965 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 09:41:18,965 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 09:41:18,967 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 09:41:18,967 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 09:41:18,969 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673f42d2-0f2f-4811-b653-c6b159b49923/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-24 09:41:19,010 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 09:41:19,011 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 09:41:19,012 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 09:41:19,012 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 09:41:19,012 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 09:41:19,012 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 09:41:19,013 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 09:41:19,013 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 09:41:19,013 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 09:41:19,014 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 09:41:19,014 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 09:41:19,015 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 09:41:19,015 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 09:41:19,015 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 09:41:19,015 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 09:41:19,016 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 09:41:19,016 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 09:41:19,016 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-24 09:41:19,016 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-24 09:41:19,017 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 09:41:19,017 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 09:41:19,017 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 09:41:19,017 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 09:41:19,018 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 09:41:19,018 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-24 09:41:19,018 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 09:41:19,018 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 09:41:19,019 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 09:41:19,019 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 09:41:19,019 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 09:41:19,019 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-24 09:41:19,020 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-24 09:41:19,020 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 09:41:19,020 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 09:41:19,020 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 09:41:19,021 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_673f42d2-0f2f-4811-b653-c6b159b49923/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673f42d2-0f2f-4811-b653-c6b159b49923/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f8c3d6863785ed03feeabfa34c0c11607b9ab236b069ea505eed9d256d26078d [2021-10-24 09:41:19,417 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 09:41:19,454 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 09:41:19,461 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 09:41:19,462 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 09:41:19,463 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 09:41:19,470 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673f42d2-0f2f-4811-b653-c6b159b49923/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/float-newlib/double_req_bl_0730c.c [2021-10-24 09:41:19,545 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673f42d2-0f2f-4811-b653-c6b159b49923/bin/utaipan-9zjyvhn0QE/data/351e9521e/413b0c06623846dd9ef43381112d9668/FLAGce016eeb3 [2021-10-24 09:41:20,062 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 09:41:20,062 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673f42d2-0f2f-4811-b653-c6b159b49923/sv-benchmarks/c/float-newlib/double_req_bl_0730c.c [2021-10-24 09:41:20,076 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673f42d2-0f2f-4811-b653-c6b159b49923/bin/utaipan-9zjyvhn0QE/data/351e9521e/413b0c06623846dd9ef43381112d9668/FLAGce016eeb3 [2021-10-24 09:41:20,444 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673f42d2-0f2f-4811-b653-c6b159b49923/bin/utaipan-9zjyvhn0QE/data/351e9521e/413b0c06623846dd9ef43381112d9668 [2021-10-24 09:41:20,447 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 09:41:20,448 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 09:41:20,450 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 09:41:20,450 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 09:41:20,454 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 09:41:20,455 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:41:20" (1/1) ... [2021-10-24 09:41:20,456 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26ad9df4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:41:20, skipping insertion in model container [2021-10-24 09:41:20,456 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:41:20" (1/1) ... [2021-10-24 09:41:20,464 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 09:41:20,506 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 09:41:20,679 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_673f42d2-0f2f-4811-b653-c6b159b49923/sv-benchmarks/c/float-newlib/double_req_bl_0730c.c[3223,3236] [2021-10-24 09:41:20,682 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 09:41:20,694 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 09:41:20,774 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_673f42d2-0f2f-4811-b653-c6b159b49923/sv-benchmarks/c/float-newlib/double_req_bl_0730c.c[3223,3236] [2021-10-24 09:41:20,789 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 09:41:20,806 INFO L208 MainTranslator]: Completed translation [2021-10-24 09:41:20,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:41:20 WrapperNode [2021-10-24 09:41:20,806 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 09:41:20,807 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 09:41:20,807 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 09:41:20,807 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 09:41:20,813 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:41:20" (1/1) ... [2021-10-24 09:41:20,825 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:41:20" (1/1) ... [2021-10-24 09:41:20,861 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 09:41:20,867 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 09:41:20,868 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 09:41:20,868 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 09:41:20,876 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:41:20" (1/1) ... [2021-10-24 09:41:20,877 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:41:20" (1/1) ... [2021-10-24 09:41:20,901 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:41:20" (1/1) ... [2021-10-24 09:41:20,901 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:41:20" (1/1) ... [2021-10-24 09:41:20,913 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:41:20" (1/1) ... [2021-10-24 09:41:20,938 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:41:20" (1/1) ... [2021-10-24 09:41:20,940 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:41:20" (1/1) ... [2021-10-24 09:41:20,945 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 09:41:20,946 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 09:41:20,946 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 09:41:20,946 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 09:41:20,947 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:41:20" (1/1) ... [2021-10-24 09:41:20,954 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 09:41:20,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673f42d2-0f2f-4811-b653-c6b159b49923/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 09:41:20,978 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673f42d2-0f2f-4811-b653-c6b159b49923/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 09:41:20,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673f42d2-0f2f-4811-b653-c6b159b49923/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 09:41:21,018 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-10-24 09:41:21,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-10-24 09:41:21,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-24 09:41:21,019 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 09:41:21,019 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-24 09:41:21,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 09:41:21,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 09:41:21,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-24 09:41:21,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-24 09:41:25,213 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 09:41:25,214 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2021-10-24 09:41:25,216 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:41:25 BoogieIcfgContainer [2021-10-24 09:41:25,216 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 09:41:25,218 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 09:41:25,218 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 09:41:25,221 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 09:41:25,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:41:20" (1/3) ... [2021-10-24 09:41:25,222 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2502f464 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:41:25, skipping insertion in model container [2021-10-24 09:41:25,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:41:20" (2/3) ... [2021-10-24 09:41:25,223 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2502f464 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:41:25, skipping insertion in model container [2021-10-24 09:41:25,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:41:25" (3/3) ... [2021-10-24 09:41:25,224 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0730c.c [2021-10-24 09:41:25,229 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 09:41:25,230 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-24 09:41:25,278 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 09:41:25,284 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=FINITE_AUTOMATA, 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 [2021-10-24 09:41:25,284 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-24 09:41:25,298 INFO L276 IsEmpty]: Start isEmpty. Operand has 53 states, 51 states have (on average 1.6470588235294117) internal successors, (84), 52 states have internal predecessors, (84), 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) [2021-10-24 09:41:25,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-24 09:41:25,303 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:41:25,303 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:41:25,304 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:41:25,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:41:25,309 INFO L82 PathProgramCache]: Analyzing trace with hash 361085180, now seen corresponding path program 1 times [2021-10-24 09:41:25,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:41:25,331 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [359709277] [2021-10-24 09:41:25,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:41:25,332 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:41:25,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673f42d2-0f2f-4811-b653-c6b159b49923/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:41:25,349 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673f42d2-0f2f-4811-b653-c6b159b49923/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:41:25,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673f42d2-0f2f-4811-b653-c6b159b49923/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-24 09:41:25,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:41:25,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-24 09:41:25,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:41:25,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:41:25,918 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:41:25,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:41:25,975 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:41:25,976 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [359709277] [2021-10-24 09:41:25,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [359709277] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:41:25,977 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:41:25,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-24 09:41:25,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139360638] [2021-10-24 09:41:25,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-24 09:41:25,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:41:25,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-24 09:41:25,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-24 09:41:26,000 INFO L87 Difference]: Start difference. First operand has 53 states, 51 states have (on average 1.6470588235294117) internal successors, (84), 52 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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) [2021-10-24 09:41:26,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:41:26,017 INFO L93 Difference]: Finished difference Result 104 states and 166 transitions. [2021-10-24 09:41:26,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-24 09:41:26,018 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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 8 [2021-10-24 09:41:26,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:41:26,026 INFO L225 Difference]: With dead ends: 104 [2021-10-24 09:41:26,026 INFO L226 Difference]: Without dead ends: 50 [2021-10-24 09:41:26,028 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-24 09:41:26,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-10-24 09:41:26,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-10-24 09:41:26,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.4285714285714286) internal successors, (70), 49 states have internal predecessors, (70), 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) [2021-10-24 09:41:26,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 70 transitions. [2021-10-24 09:41:26,058 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 70 transitions. Word has length 8 [2021-10-24 09:41:26,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:41:26,058 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 70 transitions. [2021-10-24 09:41:26,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 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) [2021-10-24 09:41:26,059 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 70 transitions. [2021-10-24 09:41:26,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-24 09:41:26,059 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:41:26,059 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:41:26,075 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673f42d2-0f2f-4811-b653-c6b159b49923/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-24 09:41:26,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673f42d2-0f2f-4811-b653-c6b159b49923/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:41:26,265 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:41:26,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:41:26,266 INFO L82 PathProgramCache]: Analyzing trace with hash 331839487, now seen corresponding path program 1 times [2021-10-24 09:41:26,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:41:26,267 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [770607336] [2021-10-24 09:41:26,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:41:26,267 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:41:26,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673f42d2-0f2f-4811-b653-c6b159b49923/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:41:26,269 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673f42d2-0f2f-4811-b653-c6b159b49923/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:41:26,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673f42d2-0f2f-4811-b653-c6b159b49923/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-24 09:41:26,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:41:26,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-24 09:41:26,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:41:26,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:41:26,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:41:27,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:41:27,208 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:41:27,208 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [770607336] [2021-10-24 09:41:27,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [770607336] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:41:27,209 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:41:27,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-24 09:41:27,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852791046] [2021-10-24 09:41:27,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-24 09:41:27,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:41:27,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-24 09:41:27,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-24 09:41:27,213 INFO L87 Difference]: Start difference. First operand 50 states and 70 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 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) [2021-10-24 09:41:28,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:41:28,358 INFO L93 Difference]: Finished difference Result 105 states and 142 transitions. [2021-10-24 09:41:28,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-24 09:41:28,362 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 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 9 [2021-10-24 09:41:28,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:41:28,363 INFO L225 Difference]: With dead ends: 105 [2021-10-24 09:41:28,363 INFO L226 Difference]: Without dead ends: 63 [2021-10-24 09:41:28,364 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 273.3ms TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-24 09:41:28,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-10-24 09:41:28,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 51. [2021-10-24 09:41:28,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.36) internal successors, (68), 50 states have internal predecessors, (68), 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) [2021-10-24 09:41:28,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 68 transitions. [2021-10-24 09:41:28,373 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 68 transitions. Word has length 9 [2021-10-24 09:41:28,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:41:28,373 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 68 transitions. [2021-10-24 09:41:28,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 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) [2021-10-24 09:41:28,374 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 68 transitions. [2021-10-24 09:41:28,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-24 09:41:28,377 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:41:28,377 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:41:28,402 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673f42d2-0f2f-4811-b653-c6b159b49923/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-10-24 09:41:28,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673f42d2-0f2f-4811-b653-c6b159b49923/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:41:28,594 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:41:28,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:41:28,595 INFO L82 PathProgramCache]: Analyzing trace with hash -1929218748, now seen corresponding path program 1 times [2021-10-24 09:41:28,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:41:28,596 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1235797736] [2021-10-24 09:41:28,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:41:28,596 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:41:28,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673f42d2-0f2f-4811-b653-c6b159b49923/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:41:28,597 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673f42d2-0f2f-4811-b653-c6b159b49923/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:41:28,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673f42d2-0f2f-4811-b653-c6b159b49923/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-24 09:41:28,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:41:28,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-24 09:41:28,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:41:28,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:41:28,879 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:41:29,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:41:29,098 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:41:29,098 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1235797736] [2021-10-24 09:41:29,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1235797736] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:41:29,099 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:41:29,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-10-24 09:41:29,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616196837] [2021-10-24 09:41:29,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-24 09:41:29,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:41:29,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-24 09:41:29,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-10-24 09:41:29,101 INFO L87 Difference]: Start difference. First operand 51 states and 68 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 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) [2021-10-24 09:41:29,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:41:29,346 INFO L93 Difference]: Finished difference Result 63 states and 79 transitions. [2021-10-24 09:41:29,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-24 09:41:29,346 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-24 09:41:29,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:41:29,348 INFO L225 Difference]: With dead ends: 63 [2021-10-24 09:41:29,348 INFO L226 Difference]: Without dead ends: 60 [2021-10-24 09:41:29,349 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 312.9ms TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-10-24 09:41:29,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-10-24 09:41:29,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 53. [2021-10-24 09:41:29,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.3461538461538463) internal successors, (70), 52 states have internal predecessors, (70), 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) [2021-10-24 09:41:29,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 70 transitions. [2021-10-24 09:41:29,358 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 70 transitions. Word has length 11 [2021-10-24 09:41:29,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:41:29,358 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 70 transitions. [2021-10-24 09:41:29,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 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) [2021-10-24 09:41:29,358 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 70 transitions. [2021-10-24 09:41:29,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-24 09:41:29,359 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:41:29,359 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:41:29,377 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673f42d2-0f2f-4811-b653-c6b159b49923/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-10-24 09:41:29,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673f42d2-0f2f-4811-b653-c6b159b49923/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:41:29,572 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:41:29,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:41:29,573 INFO L82 PathProgramCache]: Analyzing trace with hash 264903321, now seen corresponding path program 1 times [2021-10-24 09:41:29,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:41:29,573 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1989075969] [2021-10-24 09:41:29,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:41:29,574 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:41:29,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673f42d2-0f2f-4811-b653-c6b159b49923/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:41:29,584 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673f42d2-0f2f-4811-b653-c6b159b49923/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:41:29,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673f42d2-0f2f-4811-b653-c6b159b49923/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-24 09:41:29,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:41:29,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-24 09:41:29,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:41:30,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:41:30,337 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:41:31,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:41:31,259 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:41:31,260 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1989075969] [2021-10-24 09:41:31,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1989075969] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:41:31,260 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:41:31,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 14 [2021-10-24 09:41:31,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215404713] [2021-10-24 09:41:31,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-24 09:41:31,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:41:31,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-24 09:41:31,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-10-24 09:41:31,262 INFO L87 Difference]: Start difference. First operand 53 states and 70 transitions. Second operand has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 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) [2021-10-24 09:41:32,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:41:32,089 INFO L93 Difference]: Finished difference Result 60 states and 76 transitions. [2021-10-24 09:41:32,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-24 09:41:32,090 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 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 15 [2021-10-24 09:41:32,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:41:32,091 INFO L225 Difference]: With dead ends: 60 [2021-10-24 09:41:32,091 INFO L226 Difference]: Without dead ends: 51 [2021-10-24 09:41:32,091 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1358.2ms TimeCoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2021-10-24 09:41:32,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-10-24 09:41:32,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-10-24 09:41:32,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.34) internal successors, (67), 50 states have internal predecessors, (67), 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) [2021-10-24 09:41:32,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 67 transitions. [2021-10-24 09:41:32,096 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 67 transitions. Word has length 15 [2021-10-24 09:41:32,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:41:32,096 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 67 transitions. [2021-10-24 09:41:32,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 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) [2021-10-24 09:41:32,096 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 67 transitions. [2021-10-24 09:41:32,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-24 09:41:32,097 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:41:32,097 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:41:32,113 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673f42d2-0f2f-4811-b653-c6b159b49923/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-10-24 09:41:32,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673f42d2-0f2f-4811-b653-c6b159b49923/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:41:32,298 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:41:32,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:41:32,298 INFO L82 PathProgramCache]: Analyzing trace with hash 1807617568, now seen corresponding path program 1 times [2021-10-24 09:41:32,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:41:32,299 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2003388241] [2021-10-24 09:41:32,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:41:32,299 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:41:32,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673f42d2-0f2f-4811-b653-c6b159b49923/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:41:32,300 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673f42d2-0f2f-4811-b653-c6b159b49923/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:41:32,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673f42d2-0f2f-4811-b653-c6b159b49923/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-24 09:41:32,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:41:32,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-24 09:41:32,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:41:32,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:41:32,870 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:41:33,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 09:41:33,274 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:41:33,274 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2003388241] [2021-10-24 09:41:33,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2003388241] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:41:33,275 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:41:33,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-24 09:41:33,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546616165] [2021-10-24 09:41:33,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-24 09:41:33,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:41:33,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-24 09:41:33,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-24 09:41:33,276 INFO L87 Difference]: Start difference. First operand 51 states and 67 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:41:33,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:41:33,961 INFO L93 Difference]: Finished difference Result 87 states and 116 transitions. [2021-10-24 09:41:33,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-24 09:41:33,962 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-10-24 09:41:33,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:41:33,963 INFO L225 Difference]: With dead ends: 87 [2021-10-24 09:41:33,963 INFO L226 Difference]: Without dead ends: 52 [2021-10-24 09:41:33,963 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 421.0ms TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-10-24 09:41:33,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-24 09:41:33,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2021-10-24 09:41:33,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.32) internal successors, (66), 50 states have internal predecessors, (66), 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) [2021-10-24 09:41:33,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 66 transitions. [2021-10-24 09:41:33,970 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 66 transitions. Word has length 27 [2021-10-24 09:41:33,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:41:33,970 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 66 transitions. [2021-10-24 09:41:33,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 09:41:33,970 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 66 transitions. [2021-10-24 09:41:33,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-24 09:41:33,971 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:41:33,971 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:41:33,993 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673f42d2-0f2f-4811-b653-c6b159b49923/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-24 09:41:34,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673f42d2-0f2f-4811-b653-c6b159b49923/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:41:34,172 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:41:34,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:41:34,173 INFO L82 PathProgramCache]: Analyzing trace with hash 1685732611, now seen corresponding path program 1 times [2021-10-24 09:41:34,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:41:34,173 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [940337606] [2021-10-24 09:41:34,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:41:34,174 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:41:34,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673f42d2-0f2f-4811-b653-c6b159b49923/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:41:34,175 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673f42d2-0f2f-4811-b653-c6b159b49923/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:41:34,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673f42d2-0f2f-4811-b653-c6b159b49923/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-24 09:41:34,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:41:34,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-24 09:41:34,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:41:34,447 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-24 09:41:34,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:41:34,581 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-24 09:41:34,582 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:41:34,582 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [940337606] [2021-10-24 09:41:34,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [940337606] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:41:34,582 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:41:34,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-24 09:41:34,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515047903] [2021-10-24 09:41:34,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-24 09:41:34,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:41:34,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-24 09:41:34,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 09:41:34,585 INFO L87 Difference]: Start difference. First operand 51 states and 66 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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) [2021-10-24 09:41:34,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:41:34,705 INFO L93 Difference]: Finished difference Result 84 states and 112 transitions. [2021-10-24 09:41:34,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 09:41:34,706 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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 32 [2021-10-24 09:41:34,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:41:34,707 INFO L225 Difference]: With dead ends: 84 [2021-10-24 09:41:34,707 INFO L226 Difference]: Without dead ends: 55 [2021-10-24 09:41:34,708 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-24 09:41:34,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-10-24 09:41:34,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2021-10-24 09:41:34,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.3148148148148149) internal successors, (71), 54 states have internal predecessors, (71), 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) [2021-10-24 09:41:34,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 71 transitions. [2021-10-24 09:41:34,714 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 71 transitions. Word has length 32 [2021-10-24 09:41:34,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:41:34,714 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 71 transitions. [2021-10-24 09:41:34,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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) [2021-10-24 09:41:34,714 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 71 transitions. [2021-10-24 09:41:34,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-24 09:41:34,716 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:41:34,716 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:41:34,731 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673f42d2-0f2f-4811-b653-c6b159b49923/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-24 09:41:34,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673f42d2-0f2f-4811-b653-c6b159b49923/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:41:34,928 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:41:34,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:41:34,929 INFO L82 PathProgramCache]: Analyzing trace with hash 429259843, now seen corresponding path program 1 times [2021-10-24 09:41:34,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:41:34,929 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1837673500] [2021-10-24 09:41:34,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:41:34,930 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:41:34,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673f42d2-0f2f-4811-b653-c6b159b49923/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:41:34,930 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673f42d2-0f2f-4811-b653-c6b159b49923/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:41:34,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673f42d2-0f2f-4811-b653-c6b159b49923/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-24 09:41:35,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:41:35,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-24 09:41:35,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:41:35,381 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-24 09:41:35,381 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:41:35,658 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-24 09:41:35,658 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:41:35,659 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1837673500] [2021-10-24 09:41:35,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1837673500] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 09:41:35,659 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [701676509] [2021-10-24 09:41:35,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:41:35,660 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-24 09:41:35,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673f42d2-0f2f-4811-b653-c6b159b49923/bin/utaipan-9zjyvhn0QE/cvc4 [2021-10-24 09:41:35,662 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673f42d2-0f2f-4811-b653-c6b159b49923/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-24 09:41:35,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673f42d2-0f2f-4811-b653-c6b159b49923/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-10-24 09:41:35,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:41:35,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-24 09:41:35,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:41:36,438 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-24 09:41:36,439 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:41:36,842 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-24 09:41:36,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [701676509] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:41:36,842 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-10-24 09:41:36,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5] total 11 [2021-10-24 09:41:36,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081447297] [2021-10-24 09:41:36,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-24 09:41:36,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:41:36,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-24 09:41:36,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-10-24 09:41:36,844 INFO L87 Difference]: Start difference. First operand 55 states and 71 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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) [2021-10-24 09:41:37,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:41:37,116 INFO L93 Difference]: Finished difference Result 84 states and 111 transitions. [2021-10-24 09:41:37,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-24 09:41:37,117 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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 38 [2021-10-24 09:41:37,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:41:37,118 INFO L225 Difference]: With dead ends: 84 [2021-10-24 09:41:37,118 INFO L226 Difference]: Without dead ends: 63 [2021-10-24 09:41:37,119 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 444.1ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-10-24 09:41:37,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-10-24 09:41:37,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2021-10-24 09:41:37,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.3225806451612903) internal successors, (82), 62 states have internal predecessors, (82), 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) [2021-10-24 09:41:37,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 82 transitions. [2021-10-24 09:41:37,126 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 82 transitions. Word has length 38 [2021-10-24 09:41:37,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:41:37,126 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 82 transitions. [2021-10-24 09:41:37,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 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) [2021-10-24 09:41:37,127 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 82 transitions. [2021-10-24 09:41:37,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-10-24 09:41:37,128 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:41:37,129 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:41:37,142 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673f42d2-0f2f-4811-b653-c6b159b49923/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-24 09:41:37,343 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673f42d2-0f2f-4811-b653-c6b159b49923/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (9)] Ended with exit code 0 [2021-10-24 09:41:37,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673f42d2-0f2f-4811-b653-c6b159b49923/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673f42d2-0f2f-4811-b653-c6b159b49923/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt [2021-10-24 09:41:37,543 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:41:37,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:41:37,543 INFO L82 PathProgramCache]: Analyzing trace with hash 1564040323, now seen corresponding path program 1 times [2021-10-24 09:41:37,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:41:37,549 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [189572001] [2021-10-24 09:41:37,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:41:37,549 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:41:37,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673f42d2-0f2f-4811-b653-c6b159b49923/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:41:37,550 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673f42d2-0f2f-4811-b653-c6b159b49923/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:41:37,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673f42d2-0f2f-4811-b653-c6b159b49923/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-24 09:41:37,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:41:37,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-24 09:41:37,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:41:38,026 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-24 09:41:38,026 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:41:38,380 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-24 09:41:38,380 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:41:38,381 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [189572001] [2021-10-24 09:41:38,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [189572001] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 09:41:38,381 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1196273951] [2021-10-24 09:41:38,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:41:38,381 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-24 09:41:38,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673f42d2-0f2f-4811-b653-c6b159b49923/bin/utaipan-9zjyvhn0QE/cvc4 [2021-10-24 09:41:38,382 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673f42d2-0f2f-4811-b653-c6b159b49923/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-24 09:41:38,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673f42d2-0f2f-4811-b653-c6b159b49923/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-10-24 09:41:38,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:41:38,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-24 09:41:38,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:41:38,948 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-24 09:41:38,948 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:41:39,191 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-24 09:41:39,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1196273951] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 09:41:39,192 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909117561] [2021-10-24 09:41:39,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 09:41:39,192 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 09:41:39,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673f42d2-0f2f-4811-b653-c6b159b49923/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 09:41:39,198 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673f42d2-0f2f-4811-b653-c6b159b49923/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 09:41:39,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673f42d2-0f2f-4811-b653-c6b159b49923/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-24 09:41:39,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 09:41:39,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-24 09:41:39,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:41:39,691 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-24 09:41:39,691 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:41:39,913 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-24 09:41:39,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [909117561] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-24 09:41:39,914 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-24 09:41:39,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2021-10-24 09:41:39,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984712783] [2021-10-24 09:41:39,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-24 09:41:39,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:41:39,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-24 09:41:39,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-10-24 09:41:39,916 INFO L87 Difference]: Start difference. First operand 63 states and 82 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 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) [2021-10-24 09:41:40,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:41:40,298 INFO L93 Difference]: Finished difference Result 112 states and 152 transitions. [2021-10-24 09:41:40,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-24 09:41:40,298 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 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 44 [2021-10-24 09:41:40,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:41:40,299 INFO L225 Difference]: With dead ends: 112 [2021-10-24 09:41:40,299 INFO L226 Difference]: Without dead ends: 75 [2021-10-24 09:41:40,300 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 177.9ms TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-10-24 09:41:40,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-10-24 09:41:40,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2021-10-24 09:41:40,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.3243243243243243) internal successors, (98), 74 states have internal predecessors, (98), 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) [2021-10-24 09:41:40,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 98 transitions. [2021-10-24 09:41:40,309 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 98 transitions. Word has length 44 [2021-10-24 09:41:40,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:41:40,309 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 98 transitions. [2021-10-24 09:41:40,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 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) [2021-10-24 09:41:40,309 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 98 transitions. [2021-10-24 09:41:40,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-10-24 09:41:40,311 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 09:41:40,312 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 09:41:40,346 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673f42d2-0f2f-4811-b653-c6b159b49923/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-24 09:41:40,539 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673f42d2-0f2f-4811-b653-c6b159b49923/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-10-24 09:41:40,746 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673f42d2-0f2f-4811-b653-c6b159b49923/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-24 09:41:40,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673f42d2-0f2f-4811-b653-c6b159b49923/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673f42d2-0f2f-4811-b653-c6b159b49923/bin/utaipan-9zjyvhn0QE/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673f42d2-0f2f-4811-b653-c6b159b49923/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:41:40,937 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 09:41:40,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 09:41:40,937 INFO L82 PathProgramCache]: Analyzing trace with hash -229463293, now seen corresponding path program 2 times [2021-10-24 09:41:40,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 09:41:40,938 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [457475637] [2021-10-24 09:41:40,938 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-24 09:41:40,938 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 09:41:40,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673f42d2-0f2f-4811-b653-c6b159b49923/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 09:41:40,939 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673f42d2-0f2f-4811-b653-c6b159b49923/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 09:41:40,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673f42d2-0f2f-4811-b653-c6b159b49923/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-24 09:41:41,211 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-24 09:41:41,211 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-24 09:41:41,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-24 09:41:41,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 09:41:41,330 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 27 [2021-10-24 09:41:41,909 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-10-24 09:41:41,909 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 09:41:42,274 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 30 [2021-10-24 09:41:42,371 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-10-24 09:41:42,371 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 09:41:42,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [457475637] [2021-10-24 09:41:42,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [457475637] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 09:41:42,371 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 09:41:42,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-24 09:41:42,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803764023] [2021-10-24 09:41:42,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-24 09:41:42,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 09:41:42,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-24 09:41:42,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-24 09:41:42,373 INFO L87 Difference]: Start difference. First operand 75 states and 98 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 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) [2021-10-24 09:41:42,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 09:41:42,468 INFO L93 Difference]: Finished difference Result 75 states and 98 transitions. [2021-10-24 09:41:42,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 09:41:42,475 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 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 56 [2021-10-24 09:41:42,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 09:41:42,475 INFO L225 Difference]: With dead ends: 75 [2021-10-24 09:41:42,475 INFO L226 Difference]: Without dead ends: 0 [2021-10-24 09:41:42,476 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 219.5ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-24 09:41:42,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-24 09:41:42,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-24 09:41:42,476 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) [2021-10-24 09:41:42,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-24 09:41:42,477 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 56 [2021-10-24 09:41:42,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 09:41:42,477 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-24 09:41:42,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 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) [2021-10-24 09:41:42,477 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-24 09:41:42,477 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-24 09:41:42,480 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 09:41:42,497 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673f42d2-0f2f-4811-b653-c6b159b49923/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-24 09:41:42,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673f42d2-0f2f-4811-b653-c6b159b49923/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 09:41:42,690 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-24 09:41:42,692 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:41:42,716 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:41:42,717 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:41:42,724 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:41:42,736 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:41:42,737 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:41:42,738 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:41:42,750 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:41:42,751 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:41:42,752 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 09:41:42,986 INFO L857 garLoopResultBuilder]: For program point L60(lines 60 63) no Hoare annotation was computed. [2021-10-24 09:41:42,986 INFO L857 garLoopResultBuilder]: For program point L27-1(lines 27 32) no Hoare annotation was computed. [2021-10-24 09:41:42,986 INFO L857 garLoopResultBuilder]: For program point L60-2(lines 60 63) no Hoare annotation was computed. [2021-10-24 09:41:42,986 INFO L853 garLoopResultBuilder]: At program point L27-2(lines 27 32) the Hoare annotation is: (and (= ULTIMATE.start___ieee754_sqrt_~sign~0 (_ bv2147483648 32)) (= (_ +zero 11 53) ULTIMATE.start___ieee754_sqrt_~x)) [2021-10-24 09:41:42,987 INFO L857 garLoopResultBuilder]: For program point L27-3(lines 21 129) no Hoare annotation was computed. [2021-10-24 09:41:42,987 INFO L857 garLoopResultBuilder]: For program point L52-2(lines 52 53) no Hoare annotation was computed. [2021-10-24 09:41:42,987 INFO L853 garLoopResultBuilder]: At program point L52-3(lines 52 53) the Hoare annotation is: false [2021-10-24 09:41:42,987 INFO L857 garLoopResultBuilder]: For program point L52-4(lines 52 53) no Hoare annotation was computed. [2021-10-24 09:41:42,987 INFO L857 garLoopResultBuilder]: For program point L110(lines 110 111) no Hoare annotation was computed. [2021-10-24 09:41:42,987 INFO L857 garLoopResultBuilder]: For program point L110-2(lines 110 111) no Hoare annotation was computed. [2021-10-24 09:41:42,987 INFO L857 garLoopResultBuilder]: For program point L102(lines 102 116) no Hoare annotation was computed. [2021-10-24 09:41:42,987 INFO L860 garLoopResultBuilder]: At program point L160(lines 143 161) the Hoare annotation is: true [2021-10-24 09:41:42,987 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-24 09:41:42,988 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-24 09:41:42,988 INFO L857 garLoopResultBuilder]: For program point L119(lines 119 120) no Hoare annotation was computed. [2021-10-24 09:41:42,988 INFO L857 garLoopResultBuilder]: For program point L119-2(lines 119 120) no Hoare annotation was computed. [2021-10-24 09:41:42,988 INFO L853 garLoopResultBuilder]: At program point L128(lines 21 129) the Hoare annotation is: (and (= (_ +zero 11 53) ULTIMATE.start___ieee754_sqrt_~x) (= (_ +zero 11 53) |ULTIMATE.start___ieee754_sqrt_#res|)) [2021-10-24 09:41:42,988 INFO L857 garLoopResultBuilder]: For program point L87(lines 87 96) no Hoare annotation was computed. [2021-10-24 09:41:42,988 INFO L857 garLoopResultBuilder]: For program point L87-2(lines 87 96) no Hoare annotation was computed. [2021-10-24 09:41:42,988 INFO L857 garLoopResultBuilder]: For program point L46(lines 46 57) no Hoare annotation was computed. [2021-10-24 09:41:42,988 INFO L857 garLoopResultBuilder]: For program point L46-2(lines 46 57) no Hoare annotation was computed. [2021-10-24 09:41:42,988 INFO L857 garLoopResultBuilder]: For program point L104(lines 104 115) no Hoare annotation was computed. [2021-10-24 09:41:42,988 INFO L857 garLoopResultBuilder]: For program point L38(lines 38 43) no Hoare annotation was computed. [2021-10-24 09:41:42,989 INFO L853 garLoopResultBuilder]: At program point L71-2(lines 71 81) the Hoare annotation is: false [2021-10-24 09:41:42,989 INFO L857 garLoopResultBuilder]: For program point L38-2(lines 38 43) no Hoare annotation was computed. [2021-10-24 09:41:42,989 INFO L857 garLoopResultBuilder]: For program point L71-3(lines 71 81) no Hoare annotation was computed. [2021-10-24 09:41:42,989 INFO L853 garLoopResultBuilder]: At program point L47-2(lines 47 51) the Hoare annotation is: false [2021-10-24 09:41:42,989 INFO L857 garLoopResultBuilder]: For program point L47-3(lines 47 51) no Hoare annotation was computed. [2021-10-24 09:41:42,989 INFO L857 garLoopResultBuilder]: For program point L39(lines 39 42) no Hoare annotation was computed. [2021-10-24 09:41:42,989 INFO L857 garLoopResultBuilder]: For program point L155(line 155) no Hoare annotation was computed. [2021-10-24 09:41:42,989 INFO L857 garLoopResultBuilder]: For program point L89(lines 89 90) no Hoare annotation was computed. [2021-10-24 09:41:42,989 INFO L857 garLoopResultBuilder]: For program point L122-1(lines 122 127) no Hoare annotation was computed. [2021-10-24 09:41:42,990 INFO L857 garLoopResultBuilder]: For program point L155-2(lines 155 158) no Hoare annotation was computed. [2021-10-24 09:41:42,990 INFO L853 garLoopResultBuilder]: At program point L122-2(lines 122 127) the Hoare annotation is: false [2021-10-24 09:41:42,990 INFO L857 garLoopResultBuilder]: For program point L89-2(lines 89 90) no Hoare annotation was computed. [2021-10-24 09:41:42,990 INFO L857 garLoopResultBuilder]: For program point L122-3(lines 122 127) no Hoare annotation was computed. [2021-10-24 09:41:42,990 INFO L857 garLoopResultBuilder]: For program point L106(lines 106 114) no Hoare annotation was computed. [2021-10-24 09:41:42,990 INFO L857 garLoopResultBuilder]: For program point L73(lines 73 77) no Hoare annotation was computed. [2021-10-24 09:41:42,990 INFO L857 garLoopResultBuilder]: For program point L73-2(lines 73 77) no Hoare annotation was computed. [2021-10-24 09:41:42,990 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-24 09:41:42,990 INFO L857 garLoopResultBuilder]: For program point L156(line 156) no Hoare annotation was computed. [2021-10-24 09:41:42,991 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 156) no Hoare annotation was computed. [2021-10-24 09:41:42,991 INFO L853 garLoopResultBuilder]: At program point L140(lines 131 141) the Hoare annotation is: (and (exists ((|v_skolemized_q#valueAsBitvector_6| (_ BitVec 64))) (and (= ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_6|) ULTIMATE.start___signbit_double_~msw~0) (= (fp ((_ extract 63 63) |v_skolemized_q#valueAsBitvector_6|) ((_ extract 62 52) |v_skolemized_q#valueAsBitvector_6|) ((_ extract 51 0) |v_skolemized_q#valueAsBitvector_6|)) (_ +zero 11 53)))) (= |ULTIMATE.start___signbit_double_#res| (_ bv0 32)) |ULTIMATE.start_main_#t~short14| (= (_ +zero 11 53) ULTIMATE.start___ieee754_sqrt_~x) (= (_ +zero 11 53) |ULTIMATE.start___ieee754_sqrt_#res|) (= (_ +zero 11 53) ULTIMATE.start___signbit_double_~x) (= (_ +zero 11 53) ULTIMATE.start_main_~res~0)) [2021-10-24 09:41:42,991 INFO L857 garLoopResultBuilder]: For program point L41(lines 41 42) no Hoare annotation was computed. [2021-10-24 09:41:42,991 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-24 09:41:42,991 INFO L857 garLoopResultBuilder]: For program point L92(lines 92 93) no Hoare annotation was computed. [2021-10-24 09:41:42,991 INFO L857 garLoopResultBuilder]: For program point L92-2(lines 92 93) no Hoare annotation was computed. [2021-10-24 09:41:42,991 INFO L853 garLoopResultBuilder]: At program point L84-2(lines 84 100) the Hoare annotation is: false [2021-10-24 09:41:42,991 INFO L857 garLoopResultBuilder]: For program point L84-3(lines 21 129) no Hoare annotation was computed. [2021-10-24 09:41:42,991 INFO L857 garLoopResultBuilder]: For program point L109(lines 109 114) no Hoare annotation was computed. [2021-10-24 09:41:42,992 INFO L857 garLoopResultBuilder]: For program point L134-1(lines 134 138) no Hoare annotation was computed. [2021-10-24 09:41:42,992 INFO L853 garLoopResultBuilder]: At program point L134-2(lines 134 138) the Hoare annotation is: (and |ULTIMATE.start_main_#t~short14| (= (_ +zero 11 53) ULTIMATE.start___ieee754_sqrt_~x) (= (_ +zero 11 53) |ULTIMATE.start___ieee754_sqrt_#res|) (= (_ +zero 11 53) ULTIMATE.start___signbit_double_~x) (= (_ +zero 11 53) ULTIMATE.start_main_~res~0)) [2021-10-24 09:41:42,992 INFO L857 garLoopResultBuilder]: For program point L134-3(lines 134 138) no Hoare annotation was computed. [2021-10-24 09:41:42,996 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 09:41:43,012 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2021-10-24 09:41:43,013 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2021-10-24 09:41:43,013 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2021-10-24 09:41:43,013 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2021-10-24 09:41:43,014 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2021-10-24 09:41:43,014 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2021-10-24 09:41:43,015 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2021-10-24 09:41:43,015 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2021-10-24 09:41:43,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:41:43 BoogieIcfgContainer [2021-10-24 09:41:43,016 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 09:41:43,017 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 09:41:43,017 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 09:41:43,017 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 09:41:43,018 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:41:25" (3/4) ... [2021-10-24 09:41:43,020 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-24 09:41:43,032 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2021-10-24 09:41:43,033 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-24 09:41:43,033 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-24 09:41:43,034 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-24 09:41:43,058 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ~Pluszero~LONGDOUBLE() == x && ~Pluszero~LONGDOUBLE() == \result [2021-10-24 09:41:43,059 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((aux-res == 0.0 && __signbit_double(res) == 0-aux && ~Pluszero~LONGDOUBLE() == x) && ~Pluszero~LONGDOUBLE() == \result) && ~Pluszero~LONGDOUBLE() == x) && ~Pluszero~LONGDOUBLE() == res [2021-10-24 09:41:43,059 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((\exists v_skolemized_q#valueAsBitvector_6 : bv64 :: v_skolemized_q#valueAsBitvector_6[63:32] == msw && ~fp~LONGDOUBLE(v_skolemized_q#valueAsBitvector_6[63:63], v_skolemized_q#valueAsBitvector_6[62:52], v_skolemized_q#valueAsBitvector_6[51:0]) == ~Pluszero~LONGDOUBLE()) && \result == 0bv32) && aux-res == 0.0 && __signbit_double(res) == 0-aux) && ~Pluszero~LONGDOUBLE() == x) && ~Pluszero~LONGDOUBLE() == \result) && ~Pluszero~LONGDOUBLE() == x) && ~Pluszero~LONGDOUBLE() == res [2021-10-24 09:41:43,084 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673f42d2-0f2f-4811-b653-c6b159b49923/bin/utaipan-9zjyvhn0QE/witness.graphml [2021-10-24 09:41:43,084 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 09:41:43,086 INFO L168 Benchmark]: Toolchain (without parser) took 22636.74 ms. Allocated memory is still 79.7 MB. Free memory was 45.7 MB in the beginning and 45.5 MB in the end (delta: 144.1 kB). Peak memory consumption was 1.2 MB. Max. memory is 16.1 GB. [2021-10-24 09:41:43,086 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 79.7 MB. Free memory was 62.1 MB in the beginning and 61.9 MB in the end (delta: 125.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 09:41:43,087 INFO L168 Benchmark]: CACSL2BoogieTranslator took 356.56 ms. Allocated memory is still 79.7 MB. Free memory was 45.4 MB in the beginning and 61.6 MB in the end (delta: -16.2 MB). Peak memory consumption was 9.1 MB. Max. memory is 16.1 GB. [2021-10-24 09:41:43,087 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.55 ms. Allocated memory is still 79.7 MB. Free memory was 61.6 MB in the beginning and 59.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 09:41:43,087 INFO L168 Benchmark]: Boogie Preprocessor took 77.61 ms. Allocated memory is still 79.7 MB. Free memory was 59.7 MB in the beginning and 57.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 09:41:43,088 INFO L168 Benchmark]: RCFGBuilder took 4270.17 ms. Allocated memory is still 79.7 MB. Free memory was 57.7 MB in the beginning and 41.5 MB in the end (delta: 16.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-24 09:41:43,088 INFO L168 Benchmark]: TraceAbstraction took 17798.37 ms. Allocated memory is still 79.7 MB. Free memory was 41.2 MB in the beginning and 50.4 MB in the end (delta: -9.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 09:41:43,089 INFO L168 Benchmark]: Witness Printer took 67.72 ms. Allocated memory is still 79.7 MB. Free memory was 50.4 MB in the beginning and 45.5 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-24 09:41:43,091 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 79.7 MB. Free memory was 62.1 MB in the beginning and 61.9 MB in the end (delta: 125.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 356.56 ms. Allocated memory is still 79.7 MB. Free memory was 45.4 MB in the beginning and 61.6 MB in the end (delta: -16.2 MB). Peak memory consumption was 9.1 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 59.55 ms. Allocated memory is still 79.7 MB. Free memory was 61.6 MB in the beginning and 59.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 77.61 ms. Allocated memory is still 79.7 MB. Free memory was 59.7 MB in the beginning and 57.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 4270.17 ms. Allocated memory is still 79.7 MB. Free memory was 57.7 MB in the beginning and 41.5 MB in the end (delta: 16.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 17798.37 ms. Allocated memory is still 79.7 MB. Free memory was 41.2 MB in the beginning and 50.4 MB in the end (delta: -9.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 67.72 ms. Allocated memory is still 79.7 MB. Free memory was 50.4 MB in the beginning and 45.5 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 156]: 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, 53 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 17719.6ms, OverallIterations: 9, TraceHistogramMax: 6, EmptinessCheckTime: 20.2ms, AutomataDifference: 3852.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 297.4ms, InitialAbstractionConstructionTime: 9.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 480 SDtfs, 480 SDslu, 1231 SDs, 0 SdLazy, 312 SolverSat, 45 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2467.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 724 GetRequests, 660 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 3241.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=75occurred in iteration=8, InterpolantAutomatonStates: 48, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 67.2ms AutomataMinimizationTime, 9 MinimizatonAttempts, 20 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 10 LocationsWithAnnotation, 10 PreInvPairs, 15 NumberOfFragments, 66 HoareAnnotationTreeSize, 10 FomulaSimplifications, 143 FormulaSimplificationTreeSizeReduction, 61.7ms HoareSimplificationTime, 10 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 229.5ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 140.0ms SsaConstructionTime, 1433.8ms SatisfiabilityAnalysisTime, 8136.4ms InterpolantComputationTime, 366 NumberOfCodeBlocks, 341 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 708 ConstructedInterpolants, 26 QuantifiedInterpolants, 1612 SizeOfPredicates, 36 NumberOfNonLiveVariables, 1033 ConjunctsInSsa, 67 ConjunctsInUnsatCore, 24 InterpolantComputations, 16 PerfectInterpolantSequences, 166/206 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: 71]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 84]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: ~Pluszero~LONGDOUBLE() == x && ~Pluszero~LONGDOUBLE() == \result - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 134]: Loop Invariant Derived loop invariant: (((aux-res == 0.0 && __signbit_double(res) == 0-aux && ~Pluszero~LONGDOUBLE() == x) && ~Pluszero~LONGDOUBLE() == \result) && ~Pluszero~LONGDOUBLE() == x) && ~Pluszero~LONGDOUBLE() == res - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 143]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 131]: Loop Invariant [2021-10-24 09:41:43,100 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2021-10-24 09:41:43,100 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2021-10-24 09:41:43,101 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2021-10-24 09:41:43,101 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2021-10-24 09:41:43,101 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2021-10-24 09:41:43,102 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2021-10-24 09:41:43,102 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] [2021-10-24 09:41:43,102 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_skolemized_q#valueAsBitvector_6,QUANTIFIED] Derived loop invariant: ((((((\exists v_skolemized_q#valueAsBitvector_6 : bv64 :: v_skolemized_q#valueAsBitvector_6[63:32] == msw && ~fp~LONGDOUBLE(v_skolemized_q#valueAsBitvector_6[63:63], v_skolemized_q#valueAsBitvector_6[62:52], v_skolemized_q#valueAsBitvector_6[51:0]) == ~Pluszero~LONGDOUBLE()) && \result == 0bv32) && aux-res == 0.0 && __signbit_double(res) == 0-aux) && ~Pluszero~LONGDOUBLE() == x) && ~Pluszero~LONGDOUBLE() == \result) && ~Pluszero~LONGDOUBLE() == x) && ~Pluszero~LONGDOUBLE() == res - InvariantResult [Line: 122]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: sign == 2147483648bv32 && ~Pluszero~LONGDOUBLE() == x RESULT: Ultimate proved your program to be correct! [2021-10-24 09:41:43,182 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_673f42d2-0f2f-4811-b653-c6b159b49923/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...