./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_08182826-d3d1-4b6b-9fd3-da526529429e/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_08182826-d3d1-4b6b-9fd3-da526529429e/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_08182826-d3d1-4b6b-9fd3-da526529429e/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_08182826-d3d1-4b6b-9fd3-da526529429e/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound5.c -s /tmp/vcloud-vcloud-master/worker/run_dir_08182826-d3d1-4b6b-9fd3-da526529429e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_08182826-d3d1-4b6b-9fd3-da526529429e/bin/uautomizer --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 2dcb64bcde8c68bb2c9a8df25838bda4481b72de .................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_08182826-d3d1-4b6b-9fd3-da526529429e/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_08182826-d3d1-4b6b-9fd3-da526529429e/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_08182826-d3d1-4b6b-9fd3-da526529429e/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_08182826-d3d1-4b6b-9fd3-da526529429e/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound5.c -s /tmp/vcloud-vcloud-master/worker/run_dir_08182826-d3d1-4b6b-9fd3-da526529429e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_08182826-d3d1-4b6b-9fd3-da526529429e/bin/uautomizer --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 2dcb64bcde8c68bb2c9a8df25838bda4481b72de .................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 00:14:49,082 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:14:49,084 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:14:49,165 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:14:49,166 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:14:49,168 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:14:49,169 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:14:49,172 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:14:49,175 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:14:49,176 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:14:49,177 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:14:49,179 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:14:49,179 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:14:49,181 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:14:49,183 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:14:49,184 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:14:49,186 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:14:49,187 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:14:49,190 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:14:49,192 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:14:49,195 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:14:49,204 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:14:49,207 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:14:49,209 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:14:49,214 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:14:49,223 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:14:49,224 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:14:49,225 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:14:49,227 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:14:49,229 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:14:49,229 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:14:49,230 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:14:49,232 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:14:49,234 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:14:49,235 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:14:49,237 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:14:49,238 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:14:49,239 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:14:49,239 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:14:49,240 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:14:49,241 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:14:49,244 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_08182826-d3d1-4b6b-9fd3-da526529429e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-30 00:14:49,279 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:14:49,280 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:14:49,281 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:14:49,282 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:14:49,282 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:14:49,282 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:14:49,282 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:14:49,283 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:14:49,283 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:14:49,283 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:14:49,283 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 00:14:49,284 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:14:49,284 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 00:14:49,284 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:14:49,284 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:14:49,284 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:14:49,285 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 00:14:49,285 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:14:49,285 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:14:49,285 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:14:49,286 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:14:49,286 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:14:49,286 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:14:49,286 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:14:49,287 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 00:14:49,287 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:14:49,287 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 00:14:49,288 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 00:14:49,289 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:14:49,289 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-vcloud-master/worker/run_dir_08182826-d3d1-4b6b-9fd3-da526529429e/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_08182826-d3d1-4b6b-9fd3-da526529429e/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2dcb64bcde8c68bb2c9a8df25838bda4481b72de [2020-11-30 00:14:49,619 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:14:49,645 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:14:49,650 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:14:49,651 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:14:49,654 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:14:49,655 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_08182826-d3d1-4b6b-9fd3-da526529429e/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound5.c [2020-11-30 00:14:49,751 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_08182826-d3d1-4b6b-9fd3-da526529429e/bin/uautomizer/data/91b38f78a/97aa2a7c6e494a5580776d58c7157bde/FLAGb4237d05f [2020-11-30 00:14:50,380 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:14:50,384 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_08182826-d3d1-4b6b-9fd3-da526529429e/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound5.c [2020-11-30 00:14:50,401 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_08182826-d3d1-4b6b-9fd3-da526529429e/bin/uautomizer/data/91b38f78a/97aa2a7c6e494a5580776d58c7157bde/FLAGb4237d05f [2020-11-30 00:14:50,724 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_08182826-d3d1-4b6b-9fd3-da526529429e/bin/uautomizer/data/91b38f78a/97aa2a7c6e494a5580776d58c7157bde [2020-11-30 00:14:50,727 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:14:50,729 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:14:50,734 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:14:50,735 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:14:50,738 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:14:50,739 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:14:50" (1/1) ... [2020-11-30 00:14:50,742 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28684a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:50, skipping insertion in model container [2020-11-30 00:14:50,742 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:14:50" (1/1) ... [2020-11-30 00:14:50,750 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:14:50,771 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:14:51,007 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:14:51,018 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:14:51,066 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:14:51,089 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:14:51,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:51 WrapperNode [2020-11-30 00:14:51,091 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:14:51,095 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:14:51,095 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:14:51,096 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:14:51,106 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:51" (1/1) ... [2020-11-30 00:14:51,115 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:51" (1/1) ... [2020-11-30 00:14:51,138 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:14:51,139 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:14:51,139 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:14:51,139 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:14:51,148 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:51" (1/1) ... [2020-11-30 00:14:51,149 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:51" (1/1) ... [2020-11-30 00:14:51,151 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:51" (1/1) ... [2020-11-30 00:14:51,151 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:51" (1/1) ... [2020-11-30 00:14:51,158 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:51" (1/1) ... [2020-11-30 00:14:51,164 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:51" (1/1) ... [2020-11-30 00:14:51,165 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:51" (1/1) ... [2020-11-30 00:14:51,168 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:14:51,169 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:14:51,169 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:14:51,170 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:14:51,172 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:51" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_08182826-d3d1-4b6b-9fd3-da526529429e/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:14:51,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 00:14:51,266 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:14:51,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:14:51,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:14:51,717 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:14:51,718 INFO L298 CfgBuilder]: Removed 31 assume(true) statements. [2020-11-30 00:14:51,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:14:51 BoogieIcfgContainer [2020-11-30 00:14:51,719 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:14:51,722 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:14:51,723 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:14:51,739 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:14:51,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:14:50" (1/3) ... [2020-11-30 00:14:51,740 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@915a237 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:14:51, skipping insertion in model container [2020-11-30 00:14:51,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:51" (2/3) ... [2020-11-30 00:14:51,741 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@915a237 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:14:51, skipping insertion in model container [2020-11-30 00:14:51,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:14:51" (3/3) ... [2020-11-30 00:14:51,743 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2_valuebound5.c [2020-11-30 00:14:51,755 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:14:51,772 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-11-30 00:14:51,797 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-11-30 00:14:51,840 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:14:51,840 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 00:14:51,841 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:14:51,841 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:14:51,841 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:14:51,842 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:14:51,842 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:14:51,842 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:14:51,861 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-11-30 00:14:51,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-30 00:14:51,867 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:14:51,868 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:14:51,869 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:14:51,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:14:51,877 INFO L82 PathProgramCache]: Analyzing trace with hash 1804972333, now seen corresponding path program 1 times [2020-11-30 00:14:51,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:14:51,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012474671] [2020-11-30 00:14:51,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:14:52,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:14:52,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:14:52,078 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012474671] [2020-11-30 00:14:52,079 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:14:52,080 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 00:14:52,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992216639] [2020-11-30 00:14:52,086 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 00:14:52,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:14:52,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 00:14:52,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 00:14:52,108 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2020-11-30 00:14:52,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:14:52,134 INFO L93 Difference]: Finished difference Result 63 states and 80 transitions. [2020-11-30 00:14:52,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 00:14:52,135 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-11-30 00:14:52,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:14:52,153 INFO L225 Difference]: With dead ends: 63 [2020-11-30 00:14:52,154 INFO L226 Difference]: Without dead ends: 29 [2020-11-30 00:14:52,167 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 00:14:52,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-11-30 00:14:52,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-11-30 00:14:52,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-11-30 00:14:52,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2020-11-30 00:14:52,229 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 7 [2020-11-30 00:14:52,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:14:52,229 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2020-11-30 00:14:52,230 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 00:14:52,231 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2020-11-30 00:14:52,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-30 00:14:52,231 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:14:52,231 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:14:52,232 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 00:14:52,232 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:14:52,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:14:52,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1806819375, now seen corresponding path program 1 times [2020-11-30 00:14:52,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:14:52,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324958059] [2020-11-30 00:14:52,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:14:52,271 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 00:14:52,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1620295563] [2020-11-30 00:14:52,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_08182826-d3d1-4b6b-9fd3-da526529429e/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:14:52,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:14:52,372 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:14:52,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:14:52,393 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:14:52,422 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:14:52,423 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 00:14:52,637 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-30 00:14:52,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:14:52 BoogieIcfgContainer [2020-11-30 00:14:52,656 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:14:52,656 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:14:52,656 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:14:52,657 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:14:52,657 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:14:51" (3/4) ... [2020-11-30 00:14:52,661 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 00:14:52,661 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:14:52,663 INFO L168 Benchmark]: Toolchain (without parser) took 1933.54 ms. Allocated memory is still 98.6 MB. Free memory was 68.6 MB in the beginning and 65.4 MB in the end (delta: 3.2 MB). Peak memory consumption was 1.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:14:52,664 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 77.6 MB. Free memory was 36.1 MB in the beginning and 36.0 MB in the end (delta: 36.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:14:52,665 INFO L168 Benchmark]: CACSL2BoogieTranslator took 357.99 ms. Allocated memory is still 98.6 MB. Free memory was 68.4 MB in the beginning and 76.0 MB in the end (delta: -7.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:14:52,666 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.16 ms. Allocated memory is still 98.6 MB. Free memory was 76.0 MB in the beginning and 74.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:14:52,667 INFO L168 Benchmark]: Boogie Preprocessor took 29.55 ms. Allocated memory is still 98.6 MB. Free memory was 74.3 MB in the beginning and 72.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:14:52,668 INFO L168 Benchmark]: RCFGBuilder took 550.40 ms. Allocated memory is still 98.6 MB. Free memory was 72.9 MB in the beginning and 58.6 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-30 00:14:52,669 INFO L168 Benchmark]: TraceAbstraction took 933.43 ms. Allocated memory is still 98.6 MB. Free memory was 58.3 MB in the beginning and 65.7 MB in the end (delta: -7.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:14:52,669 INFO L168 Benchmark]: Witness Printer took 4.50 ms. Allocated memory is still 98.6 MB. Free memory was 65.7 MB in the beginning and 65.4 MB in the end (delta: 342.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:14:52,674 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 77.6 MB. Free memory was 36.1 MB in the beginning and 36.0 MB in the end (delta: 36.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 357.99 ms. Allocated memory is still 98.6 MB. Free memory was 68.4 MB in the beginning and 76.0 MB in the end (delta: -7.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.16 ms. Allocated memory is still 98.6 MB. Free memory was 76.0 MB in the beginning and 74.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.55 ms. Allocated memory is still 98.6 MB. Free memory was 74.3 MB in the beginning and 72.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 550.40 ms. Allocated memory is still 98.6 MB. Free memory was 72.9 MB in the beginning and 58.6 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 933.43 ms. Allocated memory is still 98.6 MB. Free memory was 58.3 MB in the beginning and 65.7 MB in the end (delta: -7.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 4.50 ms. Allocated memory is still 98.6 MB. Free memory was 65.7 MB in the beginning and 65.4 MB in the end (delta: 342.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 10]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of to_int at line 34, overapproximation of someBinaryDOUBLEComparisonOperation at line 28. Possible FailurePath: [L25] int r; [L26] double a, x, s; [L27] a = __VERIFIER_nondet_double() [L14] COND FALSE !(!cond) [L29] x = a [L30] s = 3.25 [L31] r = 1 [L33] COND TRUE 1 [L17] COND TRUE !(cond) [L10] __assert_fail("0", "freire2.c", 10, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 33 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 36 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 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-11-30 00:14:55,452 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:14:55,456 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:14:55,513 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:14:55,514 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:14:55,520 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:14:55,524 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:14:55,528 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:14:55,533 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:14:55,541 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:14:55,542 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:14:55,551 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:14:55,551 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:14:55,564 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:14:55,566 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:14:55,568 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:14:55,569 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:14:55,570 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:14:55,576 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:14:55,580 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:14:55,586 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:14:55,588 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:14:55,589 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:14:55,591 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:14:55,596 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:14:55,597 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:14:55,598 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:14:55,600 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:14:55,601 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:14:55,602 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:14:55,602 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:14:55,603 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:14:55,605 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:14:55,606 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:14:55,607 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:14:55,608 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:14:55,608 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:14:55,609 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:14:55,609 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:14:55,611 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:14:55,612 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:14:55,613 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_08182826-d3d1-4b6b-9fd3-da526529429e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-30 00:14:55,662 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:14:55,662 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:14:55,665 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:14:55,665 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:14:55,666 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:14:55,666 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:14:55,666 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:14:55,666 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:14:55,667 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:14:55,667 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 00:14:55,668 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:14:55,669 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 00:14:55,669 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-30 00:14:55,669 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-30 00:14:55,669 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:14:55,670 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:14:55,670 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:14:55,670 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 00:14:55,670 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:14:55,671 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:14:55,671 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:14:55,671 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:14:55,671 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:14:55,672 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:14:55,672 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:14:55,672 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 00:14:55,673 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-30 00:14:55,673 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-30 00:14:55,673 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 00:14:55,673 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:14:55,674 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 00:14:55,674 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-vcloud-master/worker/run_dir_08182826-d3d1-4b6b-9fd3-da526529429e/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_08182826-d3d1-4b6b-9fd3-da526529429e/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2dcb64bcde8c68bb2c9a8df25838bda4481b72de [2020-11-30 00:14:56,088 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:14:56,130 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:14:56,133 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:14:56,136 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:14:56,137 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:14:56,138 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_08182826-d3d1-4b6b-9fd3-da526529429e/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound5.c [2020-11-30 00:14:56,224 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_08182826-d3d1-4b6b-9fd3-da526529429e/bin/uautomizer/data/52cdee252/3179392e1e5c454499992cca3a39c3da/FLAG619fcd2c2 [2020-11-30 00:14:56,815 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:14:56,819 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_08182826-d3d1-4b6b-9fd3-da526529429e/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound5.c [2020-11-30 00:14:56,828 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_08182826-d3d1-4b6b-9fd3-da526529429e/bin/uautomizer/data/52cdee252/3179392e1e5c454499992cca3a39c3da/FLAG619fcd2c2 [2020-11-30 00:14:57,159 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_08182826-d3d1-4b6b-9fd3-da526529429e/bin/uautomizer/data/52cdee252/3179392e1e5c454499992cca3a39c3da [2020-11-30 00:14:57,168 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:14:57,170 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:14:57,172 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:14:57,172 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:14:57,185 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:14:57,186 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:14:57" (1/1) ... [2020-11-30 00:14:57,188 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b4a33fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:57, skipping insertion in model container [2020-11-30 00:14:57,188 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:14:57" (1/1) ... [2020-11-30 00:14:57,207 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:14:57,230 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:14:57,439 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:14:57,455 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:14:57,505 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:14:57,546 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:14:57,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:57 WrapperNode [2020-11-30 00:14:57,547 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:14:57,552 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:14:57,552 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:14:57,555 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:14:57,564 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:57" (1/1) ... [2020-11-30 00:14:57,594 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:57" (1/1) ... [2020-11-30 00:14:57,638 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:14:57,639 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:14:57,639 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:14:57,639 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:14:57,649 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:57" (1/1) ... [2020-11-30 00:14:57,649 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:57" (1/1) ... [2020-11-30 00:14:57,659 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:57" (1/1) ... [2020-11-30 00:14:57,659 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:57" (1/1) ... [2020-11-30 00:14:57,679 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:57" (1/1) ... [2020-11-30 00:14:57,694 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:57" (1/1) ... [2020-11-30 00:14:57,697 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:57" (1/1) ... [2020-11-30 00:14:57,700 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:14:57,702 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:14:57,702 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:14:57,702 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:14:57,703 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:57" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_08182826-d3d1-4b6b-9fd3-da526529429e/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:14:57,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-30 00:14:57,776 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:14:57,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:14:57,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:15:09,778 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:15:09,778 INFO L298 CfgBuilder]: Removed 31 assume(true) statements. [2020-11-30 00:15:09,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:15:09 BoogieIcfgContainer [2020-11-30 00:15:09,781 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:15:09,783 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:15:09,783 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:15:09,787 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:15:09,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:14:57" (1/3) ... [2020-11-30 00:15:09,789 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@98a862b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:15:09, skipping insertion in model container [2020-11-30 00:15:09,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:14:57" (2/3) ... [2020-11-30 00:15:09,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@98a862b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:15:09, skipping insertion in model container [2020-11-30 00:15:09,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:15:09" (3/3) ... [2020-11-30 00:15:09,792 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2_valuebound5.c [2020-11-30 00:15:09,806 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:15:09,812 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-11-30 00:15:09,826 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-11-30 00:15:09,855 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:15:09,855 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 00:15:09,855 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:15:09,856 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:15:09,856 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:15:09,856 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:15:09,856 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:15:09,856 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:15:09,869 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-11-30 00:15:09,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-30 00:15:09,874 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:15:09,874 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:15:09,875 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:15:09,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:15:09,881 INFO L82 PathProgramCache]: Analyzing trace with hash 1804972333, now seen corresponding path program 1 times [2020-11-30 00:15:09,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:15:09,893 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1255352980] [2020-11-30 00:15:09,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_08182826-d3d1-4b6b-9fd3-da526529429e/bin/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-11-30 00:15:10,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:15:10,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-30 00:15:10,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:15:10,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:15:10,159 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:15:10,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:15:10,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1255352980] [2020-11-30 00:15:10,166 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:15:10,166 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-30 00:15:10,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680005813] [2020-11-30 00:15:10,172 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 00:15:10,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:15:10,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 00:15:10,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 00:15:10,196 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2020-11-30 00:15:10,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:15:10,223 INFO L93 Difference]: Finished difference Result 63 states and 80 transitions. [2020-11-30 00:15:10,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 00:15:10,224 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-11-30 00:15:10,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:15:10,234 INFO L225 Difference]: With dead ends: 63 [2020-11-30 00:15:10,234 INFO L226 Difference]: Without dead ends: 29 [2020-11-30 00:15:10,238 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 00:15:10,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-11-30 00:15:10,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-11-30 00:15:10,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-11-30 00:15:10,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2020-11-30 00:15:10,291 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 7 [2020-11-30 00:15:10,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:15:10,292 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2020-11-30 00:15:10,292 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 00:15:10,292 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2020-11-30 00:15:10,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-30 00:15:10,293 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:15:10,293 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:15:10,520 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-30 00:15:10,520 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:15:10,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:15:10,521 INFO L82 PathProgramCache]: Analyzing trace with hash 1806819375, now seen corresponding path program 1 times [2020-11-30 00:15:10,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:15:10,522 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1984807690] [2020-11-30 00:15:10,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_08182826-d3d1-4b6b-9fd3-da526529429e/bin/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-11-30 00:15:10,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:15:10,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-30 00:15:10,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:15:10,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:15:10,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:15:15,613 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification that was a NOOP. DAG size: 15 [2020-11-30 00:15:15,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:15:15,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1984807690] [2020-11-30 00:15:15,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:15:15,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2020-11-30 00:15:15,639 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885405354] [2020-11-30 00:15:15,640 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-30 00:15:15,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:15:15,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-30 00:15:15,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-11-30 00:15:15,645 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 7 states. [2020-11-30 00:15:41,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:15:41,448 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2020-11-30 00:15:41,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 00:15:41,449 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 7 [2020-11-30 00:15:41,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:15:41,450 INFO L225 Difference]: With dead ends: 34 [2020-11-30 00:15:41,450 INFO L226 Difference]: Without dead ends: 32 [2020-11-30 00:15:41,452 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-11-30 00:15:41,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-11-30 00:15:41,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-11-30 00:15:41,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-30 00:15:41,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2020-11-30 00:15:41,460 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 7 [2020-11-30 00:15:41,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:15:41,460 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2020-11-30 00:15:41,460 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-30 00:15:41,461 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2020-11-30 00:15:41,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-30 00:15:41,461 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:15:41,461 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:15:41,662 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-30 00:15:41,663 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:15:41,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:15:41,664 INFO L82 PathProgramCache]: Analyzing trace with hash 1186818322, now seen corresponding path program 1 times [2020-11-30 00:15:41,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:15:41,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1490566597] [2020-11-30 00:15:41,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_08182826-d3d1-4b6b-9fd3-da526529429e/bin/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-11-30 00:15:42,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:15:42,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-30 00:15:42,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:15:42,632 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-11-30 00:15:42,643 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:15:42,788 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-30 00:15:43,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:15:43,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:15:45,394 WARN L838 $PredicateComparison]: unable to prove that (= (_ bv1 32) (bvadd (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~a~0)))) (bvmul (_ bv4 32) (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)))) is different from false [2020-11-30 00:15:51,794 WARN L193 SmtUtils]: Spent 838.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2020-11-30 00:15:59,642 WARN L193 SmtUtils]: Spent 2.93 s on a formula simplification that was a NOOP. DAG size: 13 [2020-11-30 00:15:59,668 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 3, 2, 1] term [2020-11-30 00:15:59,668 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 00:16:00,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:16:00,390 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1490566597] [2020-11-30 00:16:00,390 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:16:00,390 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2020-11-30 00:16:00,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276807927] [2020-11-30 00:16:00,391 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-30 00:16:00,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:16:00,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-30 00:16:00,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=63, Unknown=1, NotChecked=16, Total=110 [2020-11-30 00:16:00,393 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 11 states. [2020-11-30 00:16:21,513 WARN L193 SmtUtils]: Spent 14.96 s on a formula simplification. DAG size of input: 42 DAG size of output: 18 [2020-11-30 00:16:24,764 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.leq c_ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv5 32)))) (.cse1 (fp.geq c_ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))))) (and .cse0 .cse1 (not (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) (= (_ bv1 32) c_ULTIMATE.start_main_~r~0) (= c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~x~0) (or (and (= (_ bv0 32) c_ULTIMATE.start_assume_abort_if_not_~cond) (or (not .cse0) (not .cse1))) (and .cse0 .cse1 (= (_ bv1 32) c_ULTIMATE.start_assume_abort_if_not_~cond))) (= (_ bv1 32) (bvadd (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse2 c_ULTIMATE.start_main_~x~0) (fp.mul c_currentRoundingMode .cse2 c_ULTIMATE.start_main_~a~0)))) (bvmul (_ bv4 32) (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)))) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2020-11-30 00:16:58,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:16:58,059 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2020-11-30 00:16:58,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-30 00:16:58,059 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 9 [2020-11-30 00:16:58,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:16:58,061 INFO L225 Difference]: With dead ends: 36 [2020-11-30 00:16:58,061 INFO L226 Difference]: Without dead ends: 34 [2020-11-30 00:16:58,062 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 39.7s TimeCoverageRelationStatistics Valid=48, Invalid=90, Unknown=2, NotChecked=42, Total=182 [2020-11-30 00:16:58,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-11-30 00:16:58,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-11-30 00:16:58,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-11-30 00:16:58,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2020-11-30 00:16:58,072 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 9 [2020-11-30 00:16:58,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:16:58,072 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2020-11-30 00:16:58,072 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-30 00:16:58,073 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2020-11-30 00:16:58,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-30 00:16:58,073 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:16:58,074 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:16:58,274 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-30 00:16:58,275 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:16:58,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:16:58,276 INFO L82 PathProgramCache]: Analyzing trace with hash -1928706379, now seen corresponding path program 1 times [2020-11-30 00:16:58,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:16:58,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1426057385] [2020-11-30 00:16:58,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_08182826-d3d1-4b6b-9fd3-da526529429e/bin/uautomizer/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-11-30 00:19:44,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:19:44,833 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:19:48,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:19:48,934 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:19:49,123 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-11-30 00:19:49,124 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 00:19:49,325 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-30 00:19:49,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:19:49 BoogieIcfgContainer [2020-11-30 00:19:49,355 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:19:49,356 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:19:49,356 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:19:49,356 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:19:49,357 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:15:09" (3/4) ... [2020-11-30 00:19:49,360 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-30 00:19:49,445 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_08182826-d3d1-4b6b-9fd3-da526529429e/bin/uautomizer/witness.graphml [2020-11-30 00:19:49,448 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:19:49,451 INFO L168 Benchmark]: Toolchain (without parser) took 292279.82 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 23.2 MB in the beginning and 38.9 MB in the end (delta: -15.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-30 00:19:49,451 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 46.1 MB. Free memory was 29.6 MB in the beginning and 29.6 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:19:49,452 INFO L168 Benchmark]: CACSL2BoogieTranslator took 375.56 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 23.0 MB in the beginning and 40.1 MB in the end (delta: -17.1 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2020-11-30 00:19:49,453 INFO L168 Benchmark]: Boogie Procedure Inliner took 86.10 ms. Allocated memory is still 56.6 MB. Free memory was 39.9 MB in the beginning and 38.3 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:19:49,455 INFO L168 Benchmark]: Boogie Preprocessor took 61.76 ms. Allocated memory is still 56.6 MB. Free memory was 38.3 MB in the beginning and 36.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:19:49,459 INFO L168 Benchmark]: RCFGBuilder took 12079.46 ms. Allocated memory is still 56.6 MB. Free memory was 36.6 MB in the beginning and 34.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 14.0 MB. Max. memory is 16.1 GB. [2020-11-30 00:19:49,459 INFO L168 Benchmark]: TraceAbstraction took 279572.25 ms. Allocated memory is still 56.6 MB. Free memory was 34.1 MB in the beginning and 21.9 MB in the end (delta: 12.2 MB). Peak memory consumption was 11.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:19:49,460 INFO L168 Benchmark]: Witness Printer took 92.72 ms. Allocated memory is still 56.6 MB. Free memory was 21.9 MB in the beginning and 38.9 MB in the end (delta: -17.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:19:49,470 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 46.1 MB. Free memory was 29.6 MB in the beginning and 29.6 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 375.56 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 23.0 MB in the beginning and 40.1 MB in the end (delta: -17.1 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 86.10 ms. Allocated memory is still 56.6 MB. Free memory was 39.9 MB in the beginning and 38.3 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 61.76 ms. Allocated memory is still 56.6 MB. Free memory was 38.3 MB in the beginning and 36.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 12079.46 ms. Allocated memory is still 56.6 MB. Free memory was 36.6 MB in the beginning and 34.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 14.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 279572.25 ms. Allocated memory is still 56.6 MB. Free memory was 34.1 MB in the beginning and 21.9 MB in the end (delta: 12.2 MB). Peak memory consumption was 11.4 MB. Max. memory is 16.1 GB. * Witness Printer took 92.72 ms. Allocated memory is still 56.6 MB. Free memory was 21.9 MB in the beginning and 38.9 MB in the end (delta: -17.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 10]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L25] int r; [L26] double a, x, s; [L27] a = __VERIFIER_nondet_double() [L14] COND FALSE !(!cond) [L29] x = a [L30] s = 3.25 [L31] r = 1 [L33] COND TRUE 1 [L17] COND FALSE !(!(cond)) [L17] COND FALSE !(!(cond)) [L17] COND TRUE !(cond) [L10] __assert_fail("0", "freire2.c", 10, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 279.4s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 83.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 83 SDtfs, 24 SDslu, 111 SDs, 0 SdLazy, 83 SolverSat, 11 SolverUnsat, 20 SolverUnknown, 0 SolverNotchecked, 59.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 44.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 167.6s SatisfiabilityAnalysisTime, 22.8s InterpolantComputationTime, 34 NumberOfCodeBlocks, 34 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 2520 SizeOfPredicates, 13 NumberOfNonLiveVariables, 102 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 proved your program to be incorrect! [MP z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process Received shutdown request...