./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1270c.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a915959-4933-4d98-ac82-0c00875d57da/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a915959-4933-4d98-ac82-0c00875d57da/bin/uautomizer-hJ6jxDFKc3/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a915959-4933-4d98-ac82-0c00875d57da/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a915959-4933-4d98-ac82-0c00875d57da/bin/uautomizer-hJ6jxDFKc3/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1270c.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a915959-4933-4d98-ac82-0c00875d57da/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a915959-4933-4d98-ac82-0c00875d57da/bin/uautomizer-hJ6jxDFKc3 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 91052e8ecc9a867b12c5f0d5c9b1e4af952e3b52 ................................................................................................................................................................................................................................................................................................................................................ 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_5a915959-4933-4d98-ac82-0c00875d57da/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a915959-4933-4d98-ac82-0c00875d57da/bin/uautomizer-hJ6jxDFKc3/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a915959-4933-4d98-ac82-0c00875d57da/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a915959-4933-4d98-ac82-0c00875d57da/bin/uautomizer-hJ6jxDFKc3/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1270c.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a915959-4933-4d98-ac82-0c00875d57da/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a915959-4933-4d98-ac82-0c00875d57da/bin/uautomizer-hJ6jxDFKc3 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 91052e8ecc9a867b12c5f0d5c9b1e4af952e3b52 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-15 19:13:34,975 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 19:13:34,979 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 19:13:35,048 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 19:13:35,049 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 19:13:35,056 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 19:13:35,058 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 19:13:35,064 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 19:13:35,067 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 19:13:35,077 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 19:13:35,078 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 19:13:35,081 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 19:13:35,082 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 19:13:35,085 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 19:13:35,088 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 19:13:35,100 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 19:13:35,102 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 19:13:35,103 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 19:13:35,106 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 19:13:35,115 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 19:13:35,118 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 19:13:35,120 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 19:13:35,123 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 19:13:35,125 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 19:13:35,132 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 19:13:35,133 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 19:13:35,133 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 19:13:35,136 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 19:13:35,137 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 19:13:35,139 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 19:13:35,140 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 19:13:35,141 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 19:13:35,144 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 19:13:35,146 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 19:13:35,149 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 19:13:35,149 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 19:13:35,150 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 19:13:35,151 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 19:13:35,151 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 19:13:35,152 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 19:13:35,153 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 19:13:35,155 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a915959-4933-4d98-ac82-0c00875d57da/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-15 19:13:35,210 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 19:13:35,211 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 19:13:35,212 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 19:13:35,212 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 19:13:35,214 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 19:13:35,215 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 19:13:35,215 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 19:13:35,215 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 19:13:35,216 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 19:13:35,216 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-15 19:13:35,217 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 19:13:35,218 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 19:13:35,218 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-15 19:13:35,218 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 19:13:35,219 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-15 19:13:35,219 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 19:13:35,219 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 19:13:35,219 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 19:13:35,220 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-15 19:13:35,220 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 19:13:35,220 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 19:13:35,221 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 19:13:35,221 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:13:35,221 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 19:13:35,222 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 19:13:35,222 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-15 19:13:35,222 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-15 19:13:35,223 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-15 19:13:35,223 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-15 19:13:35,225 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-15 19:13:35,225 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-15 19:13:35,226 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 19:13:35,226 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a915959-4933-4d98-ac82-0c00875d57da/bin/uautomizer-hJ6jxDFKc3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a915959-4933-4d98-ac82-0c00875d57da/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 91052e8ecc9a867b12c5f0d5c9b1e4af952e3b52 [2021-10-15 19:13:35,618 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 19:13:35,645 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 19:13:35,648 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 19:13:35,650 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 19:13:35,651 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 19:13:35,652 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a915959-4933-4d98-ac82-0c00875d57da/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/float-newlib/float_req_bl_1270c.c [2021-10-15 19:13:35,733 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a915959-4933-4d98-ac82-0c00875d57da/bin/uautomizer-hJ6jxDFKc3/data/737bf3364/b69318e9c1394ea9aa5e964e72edda7a/FLAG9144fdd11 [2021-10-15 19:13:36,421 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 19:13:36,422 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a915959-4933-4d98-ac82-0c00875d57da/sv-benchmarks/c/float-newlib/float_req_bl_1270c.c [2021-10-15 19:13:36,445 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a915959-4933-4d98-ac82-0c00875d57da/bin/uautomizer-hJ6jxDFKc3/data/737bf3364/b69318e9c1394ea9aa5e964e72edda7a/FLAG9144fdd11 [2021-10-15 19:13:36,722 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a915959-4933-4d98-ac82-0c00875d57da/bin/uautomizer-hJ6jxDFKc3/data/737bf3364/b69318e9c1394ea9aa5e964e72edda7a [2021-10-15 19:13:36,725 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 19:13:36,727 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 19:13:36,729 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 19:13:36,729 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 19:13:36,735 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 19:13:36,736 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:13:36" (1/1) ... [2021-10-15 19:13:36,739 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63c9b8be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:13:36, skipping insertion in model container [2021-10-15 19:13:36,739 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:13:36" (1/1) ... [2021-10-15 19:13:36,750 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 19:13:36,801 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 19:13:37,154 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_5a915959-4933-4d98-ac82-0c00875d57da/sv-benchmarks/c/float-newlib/float_req_bl_1270c.c[4703,4716] [2021-10-15 19:13:37,159 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:13:37,180 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 19:13:37,280 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_5a915959-4933-4d98-ac82-0c00875d57da/sv-benchmarks/c/float-newlib/float_req_bl_1270c.c[4703,4716] [2021-10-15 19:13:37,281 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:13:37,299 INFO L208 MainTranslator]: Completed translation [2021-10-15 19:13:37,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:13:37 WrapperNode [2021-10-15 19:13:37,300 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 19:13:37,302 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 19:13:37,302 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 19:13:37,302 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 19:13:37,314 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:13:37" (1/1) ... [2021-10-15 19:13:37,343 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:13:37" (1/1) ... [2021-10-15 19:13:37,406 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 19:13:37,407 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 19:13:37,407 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 19:13:37,408 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 19:13:37,418 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:13:37" (1/1) ... [2021-10-15 19:13:37,419 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:13:37" (1/1) ... [2021-10-15 19:13:37,442 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:13:37" (1/1) ... [2021-10-15 19:13:37,443 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:13:37" (1/1) ... [2021-10-15 19:13:37,476 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:13:37" (1/1) ... [2021-10-15 19:13:37,501 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:13:37" (1/1) ... [2021-10-15 19:13:37,513 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:13:37" (1/1) ... [2021-10-15 19:13:37,519 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 19:13:37,520 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 19:13:37,521 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 19:13:37,521 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 19:13:37,526 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:13:37" (1/1) ... [2021-10-15 19:13:37,536 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:13:37,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a915959-4933-4d98-ac82-0c00875d57da/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:13:37,567 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a915959-4933-4d98-ac82-0c00875d57da/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 19:13:37,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a915959-4933-4d98-ac82-0c00875d57da/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 19:13:37,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-15 19:13:37,637 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 19:13:37,637 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-10-15 19:13:37,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-15 19:13:37,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-10-15 19:13:37,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 19:13:37,638 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 19:13:37,639 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-15 19:13:37,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-15 19:13:38,501 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 19:13:38,501 INFO L299 CfgBuilder]: Removed 52 assume(true) statements. [2021-10-15 19:13:38,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:13:38 BoogieIcfgContainer [2021-10-15 19:13:38,504 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 19:13:38,507 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 19:13:38,507 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 19:13:38,511 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 19:13:38,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 07:13:36" (1/3) ... [2021-10-15 19:13:38,514 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3aa54871 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:13:38, skipping insertion in model container [2021-10-15 19:13:38,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:13:37" (2/3) ... [2021-10-15 19:13:38,515 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3aa54871 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:13:38, skipping insertion in model container [2021-10-15 19:13:38,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:13:38" (3/3) ... [2021-10-15 19:13:38,517 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1270c.c [2021-10-15 19:13:38,534 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 19:13:38,536 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-15 19:13:38,608 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 19:13:38,615 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, mConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-15 19:13:38,616 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-15 19:13:38,634 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 107 places, 180 transitions, 360 flow [2021-10-15 19:13:38,689 INFO L129 PetriNetUnfolder]: 74/180 cut-off events. [2021-10-15 19:13:38,693 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:13:38,697 INFO L84 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 180 events. 74/180 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 379 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2021-10-15 19:13:38,697 INFO L82 GeneralOperation]: Start removeDead. Operand has 107 places, 180 transitions, 360 flow [2021-10-15 19:13:38,710 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 104 places, 176 transitions, 352 flow [2021-10-15 19:13:38,727 INFO L129 PetriNetUnfolder]: 30/76 cut-off events. [2021-10-15 19:13:38,729 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:13:38,736 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:13:38,737 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:13:38,737 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:13:38,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:13:38,744 INFO L82 PathProgramCache]: Analyzing trace with hash 311741284, now seen corresponding path program 1 times [2021-10-15 19:13:38,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:13:38,761 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905752919] [2021-10-15 19:13:38,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:13:38,762 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:13:38,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:13:38,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:13:38,933 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:13:38,934 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905752919] [2021-10-15 19:13:38,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905752919] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:13:38,935 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:13:38,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-15 19:13:38,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733295374] [2021-10-15 19:13:38,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-15 19:13:38,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:13:38,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-15 19:13:38,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-15 19:13:38,978 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 180 [2021-10-15 19:13:38,986 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 176 transitions, 352 flow. Second operand has 2 states, 2 states have (on average 141.5) internal successors, (283), 2 states have internal predecessors, (283), 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) [2021-10-15 19:13:38,986 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:13:38,986 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 180 [2021-10-15 19:13:38,989 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:13:39,045 INFO L129 PetriNetUnfolder]: 33/136 cut-off events. [2021-10-15 19:13:39,048 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:13:39,052 INFO L84 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 136 events. 33/136 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 282 event pairs, 0 based on Foata normal form. 40/143 useless extension candidates. Maximal degree in co-relation 136. Up to 5 conditions per place. [2021-10-15 19:13:39,056 INFO L132 encePairwiseOnDemand]: 140/180 looper letters, 0 selfloop transitions, 0 changer transitions 0/136 dead transitions. [2021-10-15 19:13:39,057 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 136 transitions, 272 flow [2021-10-15 19:13:39,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-15 19:13:39,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-10-15 19:13:39,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 318 transitions. [2021-10-15 19:13:39,077 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8833333333333333 [2021-10-15 19:13:39,078 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 318 transitions. [2021-10-15 19:13:39,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 318 transitions. [2021-10-15 19:13:39,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:13:39,085 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 318 transitions. [2021-10-15 19:13:39,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 159.0) internal successors, (318), 2 states have internal predecessors, (318), 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) [2021-10-15 19:13:39,098 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 180.0) internal successors, (540), 3 states have internal predecessors, (540), 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) [2021-10-15 19:13:39,099 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 180.0) internal successors, (540), 3 states have internal predecessors, (540), 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) [2021-10-15 19:13:39,102 INFO L186 Difference]: Start difference. First operand has 104 places, 176 transitions, 352 flow. Second operand 2 states and 318 transitions. [2021-10-15 19:13:39,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 136 transitions, 272 flow [2021-10-15 19:13:39,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 136 transitions, 272 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 19:13:39,112 INFO L242 Difference]: Finished difference. Result has 105 places, 136 transitions, 272 flow [2021-10-15 19:13:39,115 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=272, PETRI_PLACES=105, PETRI_TRANSITIONS=136} [2021-10-15 19:13:39,116 INFO L334 CegarLoopForPetriNet]: 104 programPoint places, 1 predicate places. [2021-10-15 19:13:39,116 INFO L470 AbstractCegarLoop]: Abstraction has has 105 places, 136 transitions, 272 flow [2021-10-15 19:13:39,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 141.5) internal successors, (283), 2 states have internal predecessors, (283), 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) [2021-10-15 19:13:39,117 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:13:39,117 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:13:39,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-15 19:13:39,118 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:13:39,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:13:39,119 INFO L82 PathProgramCache]: Analyzing trace with hash 2055151297, now seen corresponding path program 1 times [2021-10-15 19:13:39,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:13:39,120 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704702983] [2021-10-15 19:13:39,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:13:39,121 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:13:39,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:13:39,296 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 19:13:39,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:13:39,459 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 19:13:39,460 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-15 19:13:39,463 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:13:39,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-15 19:13:39,473 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 19:13:39,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 07:13:39 BoogieIcfgContainer [2021-10-15 19:13:39,540 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 19:13:39,545 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 19:13:39,545 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 19:13:39,545 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 19:13:39,546 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:13:38" (3/4) ... [2021-10-15 19:13:39,549 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-15 19:13:39,549 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 19:13:39,553 INFO L168 Benchmark]: Toolchain (without parser) took 2823.51 ms. Allocated memory was 115.3 MB in the beginning and 159.4 MB in the end (delta: 44.0 MB). Free memory was 85.3 MB in the beginning and 63.3 MB in the end (delta: 22.0 MB). Peak memory consumption was 64.0 MB. Max. memory is 16.1 GB. [2021-10-15 19:13:39,553 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 115.3 MB. Free memory is still 68.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:13:39,555 INFO L168 Benchmark]: CACSL2BoogieTranslator took 571.40 ms. Allocated memory was 115.3 MB in the beginning and 159.4 MB in the end (delta: 44.0 MB). Free memory was 85.3 MB in the beginning and 129.7 MB in the end (delta: -44.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-15 19:13:39,558 INFO L168 Benchmark]: Boogie Procedure Inliner took 104.59 ms. Allocated memory is still 159.4 MB. Free memory was 129.7 MB in the beginning and 126.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-15 19:13:39,564 INFO L168 Benchmark]: Boogie Preprocessor took 112.41 ms. Allocated memory is still 159.4 MB. Free memory was 126.7 MB in the beginning and 124.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:13:39,565 INFO L168 Benchmark]: RCFGBuilder took 984.16 ms. Allocated memory is still 159.4 MB. Free memory was 124.1 MB in the beginning and 100.4 MB in the end (delta: 23.8 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:13:39,567 INFO L168 Benchmark]: TraceAbstraction took 1034.25 ms. Allocated memory is still 159.4 MB. Free memory was 99.6 MB in the beginning and 63.3 MB in the end (delta: 36.3 MB). Peak memory consumption was 35.7 MB. Max. memory is 16.1 GB. [2021-10-15 19:13:39,568 INFO L168 Benchmark]: Witness Printer took 5.01 ms. Allocated memory is still 159.4 MB. Free memory is still 63.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:13:39,577 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 115.3 MB. Free memory is still 68.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 571.40 ms. Allocated memory was 115.3 MB in the beginning and 159.4 MB in the end (delta: 44.0 MB). Free memory was 85.3 MB in the beginning and 129.7 MB in the end (delta: -44.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 104.59 ms. Allocated memory is still 159.4 MB. Free memory was 129.7 MB in the beginning and 126.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 112.41 ms. Allocated memory is still 159.4 MB. Free memory was 126.7 MB in the beginning and 124.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 984.16 ms. Allocated memory is still 159.4 MB. Free memory was 124.1 MB in the beginning and 100.4 MB in the end (delta: 23.8 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1034.25 ms. Allocated memory is still 159.4 MB. Free memory was 99.6 MB in the beginning and 63.3 MB in the end (delta: 36.3 MB). Peak memory consumption was 35.7 MB. Max. memory is 16.1 GB. * Witness Printer took 5.01 ms. Allocated memory is still 159.4 MB. Free memory is still 63.3 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: 237]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryArithmeticFLOAToperation at line 120, overapproximation of bitwiseAnd at line 220. Possible FailurePath: [L14] static const float one_sqrt = 1.0, tiny_sqrt = 1.0e-30; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L231] float x = __VERIFIER_nondet_float(); [L232] float y = 1.0f / 0.0f; [L84] float a = x, b = y, t1, t2, y1, y2, w; [L85] __int32_t j, k, ha, hb; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L88] ieee_float_shape_type gf_u; [L89] gf_u.value = (x) [L90] EXPR gf_u.word [L90] (ha) = gf_u.word [L92] ha &= 0x7fffffffL VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L94] ieee_float_shape_type gf_u; [L95] gf_u.value = (y) [L96] EXPR gf_u.word [L96] (hb) = gf_u.word [L98] hb &= 0x7fffffffL VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L99] COND FALSE !(hb > ha) [L106] a = x [L107] b = y VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L110] ieee_float_shape_type sf_u; [L111] sf_u.word = (ha) [L112] EXPR sf_u.value [L112] (a) = sf_u.value [L115] ieee_float_shape_type sf_u; [L116] sf_u.word = (hb) [L117] EXPR sf_u.value [L117] (b) = sf_u.value [L119] COND TRUE (ha - hb) > 0xf000000L [L120] return a + b; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L234] float res = __ieee754_hypotf(x, y); [L214] __int32_t ix; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L216] ieee_float_shape_type gf_u; [L217] gf_u.value = (x) [L218] EXPR gf_u.word [L218] (ix) = gf_u.word [L220] ix &= 0x7fffffff [L221] return ((ix) == 0x7f800000L); VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L236] COND TRUE !isinf_float(res) [L237] reach_error() VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 107 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 24.6ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 868.3ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 152.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 94.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 0 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=352occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 20.6ms SsaConstructionTime, 187.4ms SatisfiabilityAnalysisTime, 59.7ms InterpolantComputationTime, 37 NumberOfCodeBlocks, 37 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 15 ConstructedInterpolants, 0 QuantifiedInterpolants, 15 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 [2021-10-15 19:13:39,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a915959-4933-4d98-ac82-0c00875d57da/bin/uautomizer-hJ6jxDFKc3/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-5709675 [2021-10-15 19:13:42,764 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 19:13:42,767 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 19:13:42,814 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 19:13:42,814 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 19:13:42,820 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 19:13:42,824 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 19:13:42,835 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 19:13:42,838 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 19:13:42,839 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 19:13:42,841 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 19:13:42,842 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 19:13:42,843 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 19:13:42,846 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 19:13:42,849 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 19:13:42,852 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 19:13:42,854 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 19:13:42,861 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 19:13:42,867 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 19:13:42,877 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 19:13:42,881 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 19:13:42,883 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 19:13:42,887 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 19:13:42,889 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 19:13:42,899 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 19:13:42,900 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 19:13:42,900 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 19:13:42,903 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 19:13:42,904 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 19:13:42,905 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 19:13:42,906 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 19:13:42,907 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 19:13:42,910 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 19:13:42,911 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 19:13:42,913 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 19:13:42,913 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 19:13:42,914 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 19:13:42,914 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 19:13:42,915 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 19:13:42,917 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 19:13:42,918 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 19:13:42,925 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a915959-4933-4d98-ac82-0c00875d57da/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-15 19:13:42,981 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 19:13:42,981 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 19:13:42,982 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 19:13:42,982 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 19:13:42,984 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 19:13:42,985 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 19:13:42,985 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 19:13:42,985 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 19:13:42,986 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 19:13:42,986 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 19:13:42,987 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 19:13:42,987 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-15 19:13:42,988 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 19:13:42,988 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-15 19:13:42,988 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-15 19:13:42,989 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-15 19:13:42,989 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 19:13:42,989 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 19:13:42,989 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 19:13:42,990 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-15 19:13:42,990 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 19:13:42,990 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 19:13:42,990 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 19:13:42,991 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:13:42,991 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 19:13:42,991 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 19:13:42,992 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-15 19:13:42,992 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-15 19:13:42,992 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-15 19:13:42,992 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-15 19:13:42,993 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-15 19:13:42,993 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-15 19:13:42,993 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 19:13:42,994 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-15 19:13:42,994 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_5a915959-4933-4d98-ac82-0c00875d57da/bin/uautomizer-hJ6jxDFKc3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a915959-4933-4d98-ac82-0c00875d57da/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 91052e8ecc9a867b12c5f0d5c9b1e4af952e3b52 [2021-10-15 19:13:43,470 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 19:13:43,518 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 19:13:43,523 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 19:13:43,524 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 19:13:43,525 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 19:13:43,526 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a915959-4933-4d98-ac82-0c00875d57da/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/float-newlib/float_req_bl_1270c.c [2021-10-15 19:13:43,611 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a915959-4933-4d98-ac82-0c00875d57da/bin/uautomizer-hJ6jxDFKc3/data/92031035b/f7e3d489086c4d39bd208c337d4a552d/FLAGaa7319783 [2021-10-15 19:13:44,261 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 19:13:44,276 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a915959-4933-4d98-ac82-0c00875d57da/sv-benchmarks/c/float-newlib/float_req_bl_1270c.c [2021-10-15 19:13:44,294 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a915959-4933-4d98-ac82-0c00875d57da/bin/uautomizer-hJ6jxDFKc3/data/92031035b/f7e3d489086c4d39bd208c337d4a552d/FLAGaa7319783 [2021-10-15 19:13:44,569 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a915959-4933-4d98-ac82-0c00875d57da/bin/uautomizer-hJ6jxDFKc3/data/92031035b/f7e3d489086c4d39bd208c337d4a552d [2021-10-15 19:13:44,573 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 19:13:44,576 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 19:13:44,580 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 19:13:44,580 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 19:13:44,585 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 19:13:44,586 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:13:44" (1/1) ... [2021-10-15 19:13:44,587 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42031e12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:13:44, skipping insertion in model container [2021-10-15 19:13:44,587 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:13:44" (1/1) ... [2021-10-15 19:13:44,597 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 19:13:44,651 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 19:13:44,933 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_5a915959-4933-4d98-ac82-0c00875d57da/sv-benchmarks/c/float-newlib/float_req_bl_1270c.c[4703,4716] [2021-10-15 19:13:44,936 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:13:44,952 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 19:13:45,085 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_5a915959-4933-4d98-ac82-0c00875d57da/sv-benchmarks/c/float-newlib/float_req_bl_1270c.c[4703,4716] [2021-10-15 19:13:45,086 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:13:45,105 INFO L208 MainTranslator]: Completed translation [2021-10-15 19:13:45,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:13:45 WrapperNode [2021-10-15 19:13:45,106 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 19:13:45,108 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 19:13:45,108 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 19:13:45,108 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 19:13:45,117 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:13:45" (1/1) ... [2021-10-15 19:13:45,134 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:13:45" (1/1) ... [2021-10-15 19:13:45,178 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 19:13:45,180 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 19:13:45,180 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 19:13:45,180 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 19:13:45,197 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:13:45" (1/1) ... [2021-10-15 19:13:45,198 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:13:45" (1/1) ... [2021-10-15 19:13:45,206 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:13:45" (1/1) ... [2021-10-15 19:13:45,210 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:13:45" (1/1) ... [2021-10-15 19:13:45,255 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:13:45" (1/1) ... [2021-10-15 19:13:45,280 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:13:45" (1/1) ... [2021-10-15 19:13:45,284 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:13:45" (1/1) ... [2021-10-15 19:13:45,290 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 19:13:45,292 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 19:13:45,292 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 19:13:45,292 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 19:13:45,293 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:13:45" (1/1) ... [2021-10-15 19:13:45,303 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:13:45,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a915959-4933-4d98-ac82-0c00875d57da/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:13:45,334 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a915959-4933-4d98-ac82-0c00875d57da/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 19:13:45,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a915959-4933-4d98-ac82-0c00875d57da/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 19:13:45,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-15 19:13:45,394 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 19:13:45,394 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2021-10-15 19:13:45,394 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-15 19:13:45,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 19:13:45,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 19:13:45,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-10-15 19:13:45,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-15 19:13:45,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-15 19:13:52,865 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 19:13:52,870 INFO L299 CfgBuilder]: Removed 52 assume(true) statements. [2021-10-15 19:13:52,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:13:52 BoogieIcfgContainer [2021-10-15 19:13:52,875 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 19:13:52,879 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 19:13:52,879 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 19:13:52,883 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 19:13:52,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 07:13:44" (1/3) ... [2021-10-15 19:13:52,885 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a623bbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:13:52, skipping insertion in model container [2021-10-15 19:13:52,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:13:45" (2/3) ... [2021-10-15 19:13:52,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a623bbf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:13:52, skipping insertion in model container [2021-10-15 19:13:52,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:13:52" (3/3) ... [2021-10-15 19:13:52,888 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1270c.c [2021-10-15 19:13:52,895 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 19:13:52,896 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-15 19:13:52,979 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 19:13:52,991 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, mConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-15 19:13:52,991 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-15 19:13:53,027 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 107 places, 180 transitions, 360 flow [2021-10-15 19:13:53,097 INFO L129 PetriNetUnfolder]: 74/180 cut-off events. [2021-10-15 19:13:53,097 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:13:53,099 INFO L84 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 180 events. 74/180 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 379 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2021-10-15 19:13:53,100 INFO L82 GeneralOperation]: Start removeDead. Operand has 107 places, 180 transitions, 360 flow [2021-10-15 19:13:53,112 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 104 places, 176 transitions, 352 flow [2021-10-15 19:13:53,129 INFO L129 PetriNetUnfolder]: 30/76 cut-off events. [2021-10-15 19:13:53,129 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:13:53,130 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:13:53,130 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:13:53,131 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:13:53,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:13:53,139 INFO L82 PathProgramCache]: Analyzing trace with hash 311741284, now seen corresponding path program 1 times [2021-10-15 19:13:53,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:13:53,153 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [489678852] [2021-10-15 19:13:53,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:13:53,155 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:13:53,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a915959-4933-4d98-ac82-0c00875d57da/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:13:53,159 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a915959-4933-4d98-ac82-0c00875d57da/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:13:53,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a915959-4933-4d98-ac82-0c00875d57da/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-15 19:13:53,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:13:53,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-15 19:13:53,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:13:53,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:13:53,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:13:53,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:13:53,665 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 19:13:53,666 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [489678852] [2021-10-15 19:13:53,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [489678852] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 19:13:53,667 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:13:53,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-15 19:13:53,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058147667] [2021-10-15 19:13:53,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-15 19:13:53,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 19:13:53,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-15 19:13:53,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-15 19:13:53,702 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 180 [2021-10-15 19:13:53,708 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 176 transitions, 352 flow. Second operand has 2 states, 2 states have (on average 141.5) internal successors, (283), 2 states have internal predecessors, (283), 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) [2021-10-15 19:13:53,708 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:13:53,708 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 180 [2021-10-15 19:13:53,710 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:13:53,781 INFO L129 PetriNetUnfolder]: 33/136 cut-off events. [2021-10-15 19:13:53,781 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:13:53,783 INFO L84 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 136 events. 33/136 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 282 event pairs, 0 based on Foata normal form. 40/143 useless extension candidates. Maximal degree in co-relation 136. Up to 5 conditions per place. [2021-10-15 19:13:53,785 INFO L132 encePairwiseOnDemand]: 140/180 looper letters, 0 selfloop transitions, 0 changer transitions 0/136 dead transitions. [2021-10-15 19:13:53,785 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 136 transitions, 272 flow [2021-10-15 19:13:53,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-15 19:13:53,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-10-15 19:13:53,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 318 transitions. [2021-10-15 19:13:53,804 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8833333333333333 [2021-10-15 19:13:53,805 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 318 transitions. [2021-10-15 19:13:53,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 318 transitions. [2021-10-15 19:13:53,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:13:53,826 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 318 transitions. [2021-10-15 19:13:53,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 159.0) internal successors, (318), 2 states have internal predecessors, (318), 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) [2021-10-15 19:13:53,839 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 180.0) internal successors, (540), 3 states have internal predecessors, (540), 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) [2021-10-15 19:13:53,840 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 180.0) internal successors, (540), 3 states have internal predecessors, (540), 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) [2021-10-15 19:13:53,842 INFO L186 Difference]: Start difference. First operand has 104 places, 176 transitions, 352 flow. Second operand 2 states and 318 transitions. [2021-10-15 19:13:53,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 136 transitions, 272 flow [2021-10-15 19:13:53,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 136 transitions, 272 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 19:13:53,853 INFO L242 Difference]: Finished difference. Result has 105 places, 136 transitions, 272 flow [2021-10-15 19:13:53,856 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=272, PETRI_PLACES=105, PETRI_TRANSITIONS=136} [2021-10-15 19:13:53,857 INFO L334 CegarLoopForPetriNet]: 104 programPoint places, 1 predicate places. [2021-10-15 19:13:53,857 INFO L470 AbstractCegarLoop]: Abstraction has has 105 places, 136 transitions, 272 flow [2021-10-15 19:13:53,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 141.5) internal successors, (283), 2 states have internal predecessors, (283), 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) [2021-10-15 19:13:53,858 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:13:53,858 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:13:53,884 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a915959-4933-4d98-ac82-0c00875d57da/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-15 19:13:54,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a915959-4933-4d98-ac82-0c00875d57da/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 19:13:54,073 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:13:54,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:13:54,074 INFO L82 PathProgramCache]: Analyzing trace with hash 2055151297, now seen corresponding path program 1 times [2021-10-15 19:13:54,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:13:54,075 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1303499717] [2021-10-15 19:13:54,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:13:54,076 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:13:54,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a915959-4933-4d98-ac82-0c00875d57da/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:13:54,078 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a915959-4933-4d98-ac82-0c00875d57da/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:13:54,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a915959-4933-4d98-ac82-0c00875d57da/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-15 19:13:54,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:13:54,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-15 19:13:54,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:13:55,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:13:55,490 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:13:56,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:13:56,910 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 19:13:56,911 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1303499717] [2021-10-15 19:13:56,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1303499717] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 19:13:56,911 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:13:56,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 7] imperfect sequences [] total 11 [2021-10-15 19:13:56,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918910272] [2021-10-15 19:13:56,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-15 19:13:56,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 19:13:56,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-15 19:13:56,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-10-15 19:13:56,922 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 180 [2021-10-15 19:13:56,925 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 136 transitions, 272 flow. Second operand has 11 states, 11 states have (on average 108.63636363636364) internal successors, (1195), 11 states have internal predecessors, (1195), 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) [2021-10-15 19:13:56,926 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:13:56,926 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 180 [2021-10-15 19:13:56,926 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:14:00,202 INFO L129 PetriNetUnfolder]: 103/460 cut-off events. [2021-10-15 19:14:00,203 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:14:00,204 INFO L84 FinitePrefix]: Finished finitePrefix Result has 518 conditions, 460 events. 103/460 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2209 event pairs, 0 based on Foata normal form. 0/351 useless extension candidates. Maximal degree in co-relation 515. Up to 16 conditions per place. [2021-10-15 19:14:00,208 INFO L132 encePairwiseOnDemand]: 166/180 looper letters, 42 selfloop transitions, 13 changer transitions 0/159 dead transitions. [2021-10-15 19:14:00,208 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 159 transitions, 428 flow [2021-10-15 19:14:00,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-15 19:14:00,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-15 19:14:00,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1129 transitions. [2021-10-15 19:14:00,219 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6272222222222222 [2021-10-15 19:14:00,220 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1129 transitions. [2021-10-15 19:14:00,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1129 transitions. [2021-10-15 19:14:00,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:14:00,225 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1129 transitions. [2021-10-15 19:14:00,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 112.9) internal successors, (1129), 10 states have internal predecessors, (1129), 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) [2021-10-15 19:14:00,240 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 180.0) internal successors, (1980), 11 states have internal predecessors, (1980), 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) [2021-10-15 19:14:00,242 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 180.0) internal successors, (1980), 11 states have internal predecessors, (1980), 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) [2021-10-15 19:14:00,243 INFO L186 Difference]: Start difference. First operand has 105 places, 136 transitions, 272 flow. Second operand 10 states and 1129 transitions. [2021-10-15 19:14:00,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 159 transitions, 428 flow [2021-10-15 19:14:00,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 159 transitions, 428 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 19:14:00,251 INFO L242 Difference]: Finished difference. Result has 117 places, 141 transitions, 331 flow [2021-10-15 19:14:00,252 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=331, PETRI_PLACES=117, PETRI_TRANSITIONS=141} [2021-10-15 19:14:00,253 INFO L334 CegarLoopForPetriNet]: 104 programPoint places, 13 predicate places. [2021-10-15 19:14:00,253 INFO L470 AbstractCegarLoop]: Abstraction has has 117 places, 141 transitions, 331 flow [2021-10-15 19:14:00,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 108.63636363636364) internal successors, (1195), 11 states have internal predecessors, (1195), 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) [2021-10-15 19:14:00,255 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:14:00,256 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:14:00,283 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a915959-4933-4d98-ac82-0c00875d57da/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-15 19:14:00,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a915959-4933-4d98-ac82-0c00875d57da/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 19:14:00,479 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:14:00,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:14:00,480 INFO L82 PathProgramCache]: Analyzing trace with hash -1653009985, now seen corresponding path program 1 times [2021-10-15 19:14:00,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:14:00,481 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1650487330] [2021-10-15 19:14:00,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:14:00,481 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:14:00,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a915959-4933-4d98-ac82-0c00875d57da/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:14:00,497 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a915959-4933-4d98-ac82-0c00875d57da/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:14:00,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a915959-4933-4d98-ac82-0c00875d57da/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-15 19:14:00,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:14:00,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-15 19:14:00,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:14:01,094 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 29 [2021-10-15 19:14:01,682 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-10-15 19:14:01,682 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 66 treesize of output 53 [2021-10-15 19:14:02,108 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-10-15 19:14:02,109 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 52 [2021-10-15 19:14:03,678 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 70 treesize of output 50 [2021-10-15 19:14:05,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:14:05,722 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:14:51,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:14:51,795 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 19:14:51,795 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1650487330] [2021-10-15 19:14:51,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1650487330] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 19:14:51,796 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:14:51,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13, 14] imperfect sequences [] total 26 [2021-10-15 19:14:51,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406769333] [2021-10-15 19:14:51,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-10-15 19:14:51,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 19:14:51,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-10-15 19:14:51,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=558, Unknown=7, NotChecked=0, Total=650 [2021-10-15 19:14:51,805 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 180 [2021-10-15 19:14:51,809 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 141 transitions, 331 flow. Second operand has 26 states, 26 states have (on average 77.15384615384616) internal successors, (2006), 26 states have internal predecessors, (2006), 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) [2021-10-15 19:14:51,809 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:14:51,810 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 180 [2021-10-15 19:14:51,810 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:15:32,654 WARN L207 SmtUtils]: Spent 34.77 s on a formula simplification that was a NOOP. DAG size: 82 [2021-10-15 19:15:57,733 WARN L207 SmtUtils]: Spent 7.03 s on a formula simplification. DAG size of input: 87 DAG size of output: 85 [2021-10-15 19:16:12,531 WARN L207 SmtUtils]: Spent 9.89 s on a formula simplification. DAG size of input: 90 DAG size of output: 88 [2021-10-15 19:16:23,382 WARN L207 SmtUtils]: Spent 8.06 s on a formula simplification. DAG size of input: 92 DAG size of output: 90 [2021-10-15 19:16:23,959 INFO L129 PetriNetUnfolder]: 1/60 cut-off events. [2021-10-15 19:16:23,959 INFO L130 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2021-10-15 19:16:23,960 INFO L84 FinitePrefix]: Finished finitePrefix Result has 128 conditions, 60 events. 1/60 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 99 event pairs, 0 based on Foata normal form. 3/62 useless extension candidates. Maximal degree in co-relation 121. Up to 22 conditions per place. [2021-10-15 19:16:23,961 INFO L132 encePairwiseOnDemand]: 163/180 looper letters, 26 selfloop transitions, 10 changer transitions 5/47 dead transitions. [2021-10-15 19:16:23,961 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 47 transitions, 205 flow [2021-10-15 19:16:23,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-15 19:16:23,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-10-15 19:16:23,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1185 transitions. [2021-10-15 19:16:23,974 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.4388888888888889 [2021-10-15 19:16:23,975 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1185 transitions. [2021-10-15 19:16:23,975 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1185 transitions. [2021-10-15 19:16:23,977 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:16:23,978 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1185 transitions. [2021-10-15 19:16:23,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 79.0) internal successors, (1185), 15 states have internal predecessors, (1185), 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) [2021-10-15 19:16:23,994 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 180.0) internal successors, (2880), 16 states have internal predecessors, (2880), 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) [2021-10-15 19:16:23,996 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 180.0) internal successors, (2880), 16 states have internal predecessors, (2880), 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) [2021-10-15 19:16:23,996 INFO L186 Difference]: Start difference. First operand has 117 places, 141 transitions, 331 flow. Second operand 15 states and 1185 transitions. [2021-10-15 19:16:23,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 47 transitions, 205 flow [2021-10-15 19:16:24,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 47 transitions, 198 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-10-15 19:16:24,002 INFO L242 Difference]: Finished difference. Result has 55 places, 35 transitions, 134 flow [2021-10-15 19:16:24,003 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=134, PETRI_PLACES=55, PETRI_TRANSITIONS=35} [2021-10-15 19:16:24,003 INFO L334 CegarLoopForPetriNet]: 104 programPoint places, -49 predicate places. [2021-10-15 19:16:24,003 INFO L470 AbstractCegarLoop]: Abstraction has has 55 places, 35 transitions, 134 flow [2021-10-15 19:16:24,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 77.15384615384616) internal successors, (2006), 26 states have internal predecessors, (2006), 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) [2021-10-15 19:16:24,005 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:16:24,005 INFO L254 CegarLoopForPetriNet]: 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] [2021-10-15 19:16:24,039 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a915959-4933-4d98-ac82-0c00875d57da/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-15 19:16:24,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a915959-4933-4d98-ac82-0c00875d57da/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 19:16:24,239 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:16:24,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:16:24,239 INFO L82 PathProgramCache]: Analyzing trace with hash -951695810, now seen corresponding path program 1 times [2021-10-15 19:16:24,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:16:24,240 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [34457770] [2021-10-15 19:16:24,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:16:24,241 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:16:24,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a915959-4933-4d98-ac82-0c00875d57da/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:16:24,242 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a915959-4933-4d98-ac82-0c00875d57da/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:16:24,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a915959-4933-4d98-ac82-0c00875d57da/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-15 19:16:24,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:16:24,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-15 19:16:24,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:16:25,294 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 43 [2021-10-15 19:16:26,860 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 54 treesize of output 30 [2021-10-15 19:16:28,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:16:28,388 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:16:35,007 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_isinf_float_~ix~1_17 (_ BitVec 32))) (or (= (bvand (_ bv2147483647 32) v_ULTIMATE.start_isinf_float_~ix~1_17) (_ bv2139095040 32)) (not (= (fp ((_ extract 31 31) v_ULTIMATE.start_isinf_float_~ix~1_17) ((_ extract 30 23) v_ULTIMATE.start_isinf_float_~ix~1_17) ((_ extract 22 0) v_ULTIMATE.start_isinf_float_~ix~1_17)) (let ((.cse0 (bvand (_ bv2147483647 32) c_ULTIMATE.start___ieee754_hypotf_~hb~0))) (fp ((_ extract 31 31) .cse0) ((_ extract 30 23) .cse0) ((_ extract 22 0) .cse0))))))) is different from false [2021-10-15 19:16:37,254 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_isinf_float_~ix~1_17 (_ BitVec 32)) (|v_skolemized_q#valueAsBitvector_14| (_ BitVec 32))) (or (not (= (let ((.cse0 (bvand (_ bv2147483647 32) |v_skolemized_q#valueAsBitvector_14|))) (fp ((_ extract 31 31) .cse0) ((_ extract 30 23) .cse0) ((_ extract 22 0) .cse0))) (fp ((_ extract 31 31) v_ULTIMATE.start_isinf_float_~ix~1_17) ((_ extract 30 23) v_ULTIMATE.start_isinf_float_~ix~1_17) ((_ extract 22 0) v_ULTIMATE.start_isinf_float_~ix~1_17)))) (= (bvand (_ bv2147483647 32) v_ULTIMATE.start_isinf_float_~ix~1_17) (_ bv2139095040 32)) (not (= (fp ((_ extract 31 31) |v_skolemized_q#valueAsBitvector_14|) ((_ extract 30 23) |v_skolemized_q#valueAsBitvector_14|) ((_ extract 22 0) |v_skolemized_q#valueAsBitvector_14|)) c_ULTIMATE.start___ieee754_hypotf_~y)))) is different from false [2021-10-15 19:16:37,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:16:37,818 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 19:16:37,819 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [34457770] [2021-10-15 19:16:37,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [34457770] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 19:16:37,819 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:16:37,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 12] imperfect sequences [] total 21 [2021-10-15 19:16:37,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098072698] [2021-10-15 19:16:37,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-15 19:16:37,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 19:16:37,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-15 19:16:37,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=301, Unknown=2, NotChecked=70, Total=420 [2021-10-15 19:16:37,827 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 180 [2021-10-15 19:16:37,830 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 35 transitions, 134 flow. Second operand has 21 states, 21 states have (on average 87.57142857142857) internal successors, (1839), 21 states have internal predecessors, (1839), 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) [2021-10-15 19:16:37,830 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:16:37,830 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 180 [2021-10-15 19:16:37,830 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:16:50,250 INFO L129 PetriNetUnfolder]: 1/52 cut-off events. [2021-10-15 19:16:50,250 INFO L130 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2021-10-15 19:16:50,251 INFO L84 FinitePrefix]: Finished finitePrefix Result has 143 conditions, 52 events. 1/52 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 65 event pairs, 0 based on Foata normal form. 1/53 useless extension candidates. Maximal degree in co-relation 129. Up to 13 conditions per place. [2021-10-15 19:16:50,251 INFO L132 encePairwiseOnDemand]: 169/180 looper letters, 21 selfloop transitions, 4 changer transitions 13/46 dead transitions. [2021-10-15 19:16:50,251 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 46 transitions, 244 flow [2021-10-15 19:16:50,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-15 19:16:50,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-10-15 19:16:50,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1156 transitions. [2021-10-15 19:16:50,259 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.49401709401709404 [2021-10-15 19:16:50,259 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1156 transitions. [2021-10-15 19:16:50,259 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1156 transitions. [2021-10-15 19:16:50,261 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:16:50,261 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1156 transitions. [2021-10-15 19:16:50,274 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 88.92307692307692) internal successors, (1156), 13 states have internal predecessors, (1156), 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) [2021-10-15 19:16:50,281 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 180.0) internal successors, (2520), 14 states have internal predecessors, (2520), 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) [2021-10-15 19:16:50,283 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 180.0) internal successors, (2520), 14 states have internal predecessors, (2520), 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) [2021-10-15 19:16:50,284 INFO L186 Difference]: Start difference. First operand has 55 places, 35 transitions, 134 flow. Second operand 13 states and 1156 transitions. [2021-10-15 19:16:50,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 46 transitions, 244 flow [2021-10-15 19:16:50,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 46 transitions, 215 flow, removed 11 selfloop flow, removed 8 redundant places. [2021-10-15 19:16:50,290 INFO L242 Difference]: Finished difference. Result has 59 places, 28 transitions, 108 flow [2021-10-15 19:16:50,291 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=108, PETRI_PLACES=59, PETRI_TRANSITIONS=28} [2021-10-15 19:16:50,291 INFO L334 CegarLoopForPetriNet]: 104 programPoint places, -45 predicate places. [2021-10-15 19:16:50,292 INFO L470 AbstractCegarLoop]: Abstraction has has 59 places, 28 transitions, 108 flow [2021-10-15 19:16:50,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 87.57142857142857) internal successors, (1839), 21 states have internal predecessors, (1839), 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) [2021-10-15 19:16:50,295 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:16:50,296 INFO L254 CegarLoopForPetriNet]: 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] [2021-10-15 19:16:50,324 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a915959-4933-4d98-ac82-0c00875d57da/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-15 19:16:50,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a915959-4933-4d98-ac82-0c00875d57da/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 19:16:50,515 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:16:50,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:16:50,516 INFO L82 PathProgramCache]: Analyzing trace with hash 1435475906, now seen corresponding path program 1 times [2021-10-15 19:16:50,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:16:50,516 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [782420650] [2021-10-15 19:16:50,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:16:50,517 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:16:50,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a915959-4933-4d98-ac82-0c00875d57da/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:16:50,518 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a915959-4933-4d98-ac82-0c00875d57da/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:16:50,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a915959-4933-4d98-ac82-0c00875d57da/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-15 19:16:50,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:16:50,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-15 19:16:50,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:16:54,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:16:54,873 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:16:57,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:16:57,272 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 19:16:57,272 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [782420650] [2021-10-15 19:16:57,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [782420650] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 19:16:57,272 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:16:57,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 7] imperfect sequences [] total 11 [2021-10-15 19:16:57,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012574872] [2021-10-15 19:16:57,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-15 19:16:57,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 19:16:57,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-15 19:16:57,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-10-15 19:16:57,279 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 180 [2021-10-15 19:16:57,281 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 28 transitions, 108 flow. Second operand has 11 states, 11 states have (on average 109.36363636363636) internal successors, (1203), 11 states have internal predecessors, (1203), 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) [2021-10-15 19:16:57,282 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:16:57,282 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 180 [2021-10-15 19:16:57,282 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:16:58,616 INFO L129 PetriNetUnfolder]: 0/26 cut-off events. [2021-10-15 19:16:58,617 INFO L130 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2021-10-15 19:16:58,617 INFO L84 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 26 events. 0/26 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 0 event pairs, 0 based on Foata normal form. 1/27 useless extension candidates. Maximal degree in co-relation 0. Up to 8 conditions per place. [2021-10-15 19:16:58,618 INFO L132 encePairwiseOnDemand]: 175/180 looper letters, 9 selfloop transitions, 4 changer transitions 0/26 dead transitions. [2021-10-15 19:16:58,618 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 26 transitions, 121 flow [2021-10-15 19:16:58,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-15 19:16:58,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-10-15 19:16:58,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 656 transitions. [2021-10-15 19:16:58,623 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6074074074074074 [2021-10-15 19:16:58,624 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 656 transitions. [2021-10-15 19:16:58,624 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 656 transitions. [2021-10-15 19:16:58,625 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:16:58,625 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 656 transitions. [2021-10-15 19:16:58,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 109.33333333333333) internal successors, (656), 6 states have internal predecessors, (656), 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) [2021-10-15 19:16:58,632 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 180.0) internal successors, (1260), 7 states have internal predecessors, (1260), 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) [2021-10-15 19:16:58,633 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 180.0) internal successors, (1260), 7 states have internal predecessors, (1260), 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) [2021-10-15 19:16:58,633 INFO L186 Difference]: Start difference. First operand has 59 places, 28 transitions, 108 flow. Second operand 6 states and 656 transitions. [2021-10-15 19:16:58,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 26 transitions, 121 flow [2021-10-15 19:16:58,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 26 transitions, 81 flow, removed 7 selfloop flow, removed 18 redundant places. [2021-10-15 19:16:58,636 INFO L242 Difference]: Finished difference. Result has 36 places, 26 transitions, 63 flow [2021-10-15 19:16:58,636 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=55, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=63, PETRI_PLACES=36, PETRI_TRANSITIONS=26} [2021-10-15 19:16:58,637 INFO L334 CegarLoopForPetriNet]: 104 programPoint places, -68 predicate places. [2021-10-15 19:16:58,637 INFO L470 AbstractCegarLoop]: Abstraction has has 36 places, 26 transitions, 63 flow [2021-10-15 19:16:58,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 109.36363636363636) internal successors, (1203), 11 states have internal predecessors, (1203), 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) [2021-10-15 19:16:58,639 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:16:58,639 INFO L254 CegarLoopForPetriNet]: 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] [2021-10-15 19:16:58,659 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a915959-4933-4d98-ac82-0c00875d57da/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-10-15 19:16:58,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a915959-4933-4d98-ac82-0c00875d57da/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 19:16:58,859 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:16:58,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:16:58,859 INFO L82 PathProgramCache]: Analyzing trace with hash 2115534276, now seen corresponding path program 1 times [2021-10-15 19:16:58,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-15 19:16:58,860 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1067067642] [2021-10-15 19:16:58,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:16:58,860 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-15 19:16:58,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a915959-4933-4d98-ac82-0c00875d57da/bin/uautomizer-hJ6jxDFKc3/mathsat [2021-10-15 19:16:58,861 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a915959-4933-4d98-ac82-0c00875d57da/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-15 19:16:58,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a915959-4933-4d98-ac82-0c00875d57da/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-15 19:16:59,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:16:59,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-15 19:16:59,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:16:59,419 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 29 [2021-10-15 19:17:00,031 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 48 treesize of output 24 [2021-10-15 19:17:03,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:17:03,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-15 19:17:11,750 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_skolemized_q#valueAsBitvector_18| (_ BitVec 32))) (or (not (= (fp ((_ extract 31 31) |v_skolemized_q#valueAsBitvector_18|) ((_ extract 30 23) |v_skolemized_q#valueAsBitvector_18|) ((_ extract 22 0) |v_skolemized_q#valueAsBitvector_18|)) (let ((.cse0 (bvand (_ bv2147483647 32) c_ULTIMATE.start___ieee754_hypotf_~hb~0))) (fp ((_ extract 31 31) .cse0) ((_ extract 30 23) .cse0) ((_ extract 22 0) .cse0))))) (= (bvand (_ bv2147483647 32) |v_skolemized_q#valueAsBitvector_18|) (_ bv2139095040 32)))) is different from false [2021-10-15 19:17:14,014 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start___ieee754_hypotf_~hb~0_51 (_ BitVec 32)) (|v_skolemized_q#valueAsBitvector_18| (_ BitVec 32))) (or (not (= c_ULTIMATE.start___ieee754_hypotf_~y (fp ((_ extract 31 31) v_ULTIMATE.start___ieee754_hypotf_~hb~0_51) ((_ extract 30 23) v_ULTIMATE.start___ieee754_hypotf_~hb~0_51) ((_ extract 22 0) v_ULTIMATE.start___ieee754_hypotf_~hb~0_51)))) (not (= (fp ((_ extract 31 31) |v_skolemized_q#valueAsBitvector_18|) ((_ extract 30 23) |v_skolemized_q#valueAsBitvector_18|) ((_ extract 22 0) |v_skolemized_q#valueAsBitvector_18|)) (let ((.cse0 (bvand (_ bv2147483647 32) v_ULTIMATE.start___ieee754_hypotf_~hb~0_51))) (fp ((_ extract 31 31) .cse0) ((_ extract 30 23) .cse0) ((_ extract 22 0) .cse0))))) (= (bvand (_ bv2147483647 32) |v_skolemized_q#valueAsBitvector_18|) (_ bv2139095040 32)))) is different from false [2021-10-15 19:17:14,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:17:14,601 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-15 19:17:14,602 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1067067642] [2021-10-15 19:17:14,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1067067642] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-15 19:17:14,602 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:17:14,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 13] imperfect sequences [] total 23 [2021-10-15 19:17:14,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393677820] [2021-10-15 19:17:14,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-15 19:17:14,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-15 19:17:14,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-15 19:17:14,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=374, Unknown=2, NotChecked=78, Total=506 [2021-10-15 19:17:14,613 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 180 [2021-10-15 19:17:14,622 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 26 transitions, 63 flow. Second operand has 23 states, 23 states have (on average 84.69565217391305) internal successors, (1948), 23 states have internal predecessors, (1948), 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) [2021-10-15 19:17:14,622 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:17:14,622 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 180 [2021-10-15 19:17:14,623 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:17:25,266 INFO L129 PetriNetUnfolder]: 0/24 cut-off events. [2021-10-15 19:17:25,267 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-10-15 19:17:25,267 INFO L84 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 24 events. 0/24 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 0 event pairs, 0 based on Foata normal form. 1/25 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2021-10-15 19:17:25,268 INFO L132 encePairwiseOnDemand]: 169/180 looper letters, 0 selfloop transitions, 0 changer transitions 24/24 dead transitions. [2021-10-15 19:17:25,268 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 24 transitions, 97 flow [2021-10-15 19:17:25,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-15 19:17:25,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2021-10-15 19:17:25,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1016 transitions. [2021-10-15 19:17:25,282 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.4703703703703704 [2021-10-15 19:17:25,282 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1016 transitions. [2021-10-15 19:17:25,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1016 transitions. [2021-10-15 19:17:25,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:17:25,284 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1016 transitions. [2021-10-15 19:17:25,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 84.66666666666667) internal successors, (1016), 12 states have internal predecessors, (1016), 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) [2021-10-15 19:17:25,294 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 180.0) internal successors, (2340), 13 states have internal predecessors, (2340), 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) [2021-10-15 19:17:25,296 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 180.0) internal successors, (2340), 13 states have internal predecessors, (2340), 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) [2021-10-15 19:17:25,296 INFO L186 Difference]: Start difference. First operand has 36 places, 26 transitions, 63 flow. Second operand 12 states and 1016 transitions. [2021-10-15 19:17:25,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 24 transitions, 97 flow [2021-10-15 19:17:25,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 24 transitions, 90 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-10-15 19:17:25,299 INFO L242 Difference]: Finished difference. Result has 41 places, 0 transitions, 0 flow [2021-10-15 19:17:25,299 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=41, PETRI_TRANSITIONS=0} [2021-10-15 19:17:25,300 INFO L334 CegarLoopForPetriNet]: 104 programPoint places, -63 predicate places. [2021-10-15 19:17:25,300 INFO L470 AbstractCegarLoop]: Abstraction has has 41 places, 0 transitions, 0 flow [2021-10-15 19:17:25,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 84.69565217391305) internal successors, (1948), 23 states have internal predecessors, (1948), 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) [2021-10-15 19:17:25,306 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:17:25,332 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a915959-4933-4d98-ac82-0c00875d57da/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-15 19:17:25,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a915959-4933-4d98-ac82-0c00875d57da/bin/uautomizer-hJ6jxDFKc3/mathsat -unsat_core_generation=3 [2021-10-15 19:17:25,535 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 19:17:25,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 07:17:25 BoogieIcfgContainer [2021-10-15 19:17:25,559 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 19:17:25,560 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 19:17:25,560 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 19:17:25,561 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 19:17:25,561 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:13:52" (3/4) ... [2021-10-15 19:17:25,565 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-15 19:17:25,605 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-10-15 19:17:25,608 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-15 19:17:25,608 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-15 19:17:25,609 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-15 19:17:25,688 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a915959-4933-4d98-ac82-0c00875d57da/bin/uautomizer-hJ6jxDFKc3/witness.graphml [2021-10-15 19:17:25,693 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 19:17:25,694 INFO L168 Benchmark]: Toolchain (without parser) took 221118.11 ms. Allocated memory was 54.5 MB in the beginning and 88.1 MB in the end (delta: 33.6 MB). Free memory was 32.8 MB in the beginning and 21.1 MB in the end (delta: 11.7 MB). Peak memory consumption was 44.3 MB. Max. memory is 16.1 GB. [2021-10-15 19:17:25,695 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 54.5 MB. Free memory was 36.3 MB in the beginning and 36.2 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:17:25,696 INFO L168 Benchmark]: CACSL2BoogieTranslator took 527.11 ms. Allocated memory was 54.5 MB in the beginning and 73.4 MB in the end (delta: 18.9 MB). Free memory was 32.7 MB in the beginning and 53.7 MB in the end (delta: -21.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-15 19:17:25,696 INFO L168 Benchmark]: Boogie Procedure Inliner took 71.07 ms. Allocated memory is still 73.4 MB. Free memory was 53.4 MB in the beginning and 50.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-15 19:17:25,697 INFO L168 Benchmark]: Boogie Preprocessor took 111.14 ms. Allocated memory is still 73.4 MB. Free memory was 50.7 MB in the beginning and 47.9 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:17:25,697 INFO L168 Benchmark]: RCFGBuilder took 7583.57 ms. Allocated memory is still 73.4 MB. Free memory was 47.9 MB in the beginning and 40.0 MB in the end (delta: 8.0 MB). Peak memory consumption was 14.9 MB. Max. memory is 16.1 GB. [2021-10-15 19:17:25,698 INFO L168 Benchmark]: TraceAbstraction took 212680.51 ms. Allocated memory was 73.4 MB in the beginning and 88.1 MB in the end (delta: 14.7 MB). Free memory was 39.4 MB in the beginning and 24.2 MB in the end (delta: 15.2 MB). Peak memory consumption was 29.9 MB. Max. memory is 16.1 GB. [2021-10-15 19:17:25,699 INFO L168 Benchmark]: Witness Printer took 133.08 ms. Allocated memory is still 88.1 MB. Free memory was 24.2 MB in the beginning and 21.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:17:25,702 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 54.5 MB. Free memory was 36.3 MB in the beginning and 36.2 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 527.11 ms. Allocated memory was 54.5 MB in the beginning and 73.4 MB in the end (delta: 18.9 MB). Free memory was 32.7 MB in the beginning and 53.7 MB in the end (delta: -21.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 71.07 ms. Allocated memory is still 73.4 MB. Free memory was 53.4 MB in the beginning and 50.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 111.14 ms. Allocated memory is still 73.4 MB. Free memory was 50.7 MB in the beginning and 47.9 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 7583.57 ms. Allocated memory is still 73.4 MB. Free memory was 47.9 MB in the beginning and 40.0 MB in the end (delta: 8.0 MB). Peak memory consumption was 14.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 212680.51 ms. Allocated memory was 73.4 MB in the beginning and 88.1 MB in the end (delta: 14.7 MB). Free memory was 39.4 MB in the beginning and 24.2 MB in the end (delta: 15.2 MB). Peak memory consumption was 29.9 MB. Max. memory is 16.1 GB. * Witness Printer took 133.08 ms. Allocated memory is still 88.1 MB. Free memory was 24.2 MB in the beginning and 21.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. 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 - PositiveResult [Line: 237]: 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, 107 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 16.4ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 212564.1ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 120234.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 121.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 36 SDtfs, 415 SDslu, 274 SDs, 0 SdLazy, 825 SolverSat, 127 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 24681.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 300 GetRequests, 175 SyntacticMatches, 5 SemanticMatches, 120 ConstructedPredicates, 4 IntricatePredicates, 1 DeprecatedPredicates, 354 ImplicationChecksByTransitivity, 155568.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=352occurred in iteration=0, InterpolantAutomatonStates: 58, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 116.7ms SsaConstructionTime, 892.7ms SatisfiabilityAnalysisTime, 89072.3ms InterpolantComputationTime, 136 NumberOfCodeBlocks, 136 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 260 ConstructedInterpolants, 143 QuantifiedInterpolants, 4387 SizeOfPredicates, 67 NumberOfNonLiveVariables, 533 ConjunctsInSsa, 94 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-15 19:17:25,951 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5a915959-4933-4d98-ac82-0c00875d57da/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...